Best Atomic Outdoor Clocks in 2026

Atomic Time with Manual Setting

Automatically Sets to Exact Time

Accurate to the Second

Digital Wall Clock with Temperature and Humidity - These digital wall clocks are equipped with Swiss high precision SHTC3 detection sensors,help you master the most accurate indoor temperature and humidity and create the most comfortable indoor environment.

Wall Clocks Battery Operated, Autoset - Once you insert three AA batteries(Not included), it will automatically set the correct time. You just need to select the time zone. It also has a Memory BATTERY in case of a power outage, in which case it will retain the correct time and date when the power returns.(non-atomic clock)

Digital Clock Large Display - Wall clock or table clock with large number display, this desk alarm clock with 8 minutes snooze has been designed with absolute simplicity in mind, so you can operate and read it without any more ado.

SELF-SETTING, SELF-ADJUSTING CLOCK - Simply insert the batteries provided & the Marathon Slim Atomic Wall Clock will synchronize to the correct time using radio frequencies broadcast from NIST’s Colorado Atomic Clock (only functions in N. America).

LARGE DISPLAY - Our easy-to-read, 10-inch display and the sleek, contemporary design make this beautiful clock ideal for your home, office, school, or church. Easily hang it on a wall or place it on a table using the fold-out stand.

MULTIPLE MODES - This clock features a full calendar display which can be viewed in English, French, or Spanish; temperature displayed in Celsius or Fahrenheit; and time in either AM/PM or 24-hour format.

Atomic Accuracy: The Atomic clock has a built-in receiver that automatically synchronizes itself with the WWVB radio broadcast by the US Government’s National Institute (NIST) in Fort Collins, Colorado. The Atomic Clock will always be accurate to within one second as it receives daily WWVB updates.

Jumbo 4” Tall LCD Time Display - Easy to Read, Easy to Use, Easy to Set up - Use as either a wall clock, or as a desk clock with integrated stand. Perfect for anyplace in your home.

Displays time (hours, minutes, seconds), indoor and outdoor temperature, calendar and day of week

Large LCD Digital Wall Clock with Big Numbers - Easy to Read. WallarGe digital wall clock has a high-definition LCD screen measures 14x6 inch and the time display is 8.1x4.3 inch, the large display helps you read the time from many angles at a room distance. You can also read the indoor temperature and date on screen for full information.

Digital Wall Clock Battey Operated– Easy to Setup. The clock is supported by 4xAA battery (not included). There is a low battery indicator display on screen when battery is not power enough, no more worries about forgetting to replace new batteries. The function buttons are at the back which are easily to set.

AUTO DST – Adjust Time Automatically in Daylight Saving Time. With AUTO DST on, time will go forward or fall back 1 hour to be correct automatically. It could be turned off permanently if for no need by setting manually.

SELF-SETTING, SELF-ADJUSTING CLOCK - Simply insert batteries & the Marathon Crystal Framed Atomic Wall Clock will synchronize to the correct time using radio frequencies broadcast from NIST’s Colorado Atomic Clock (only functions in North America).

LARGE DISPLAY - The clock’s large numbers and elegant, transparent, acrylic outer frame make it ideal for a home, office, school, or hospital. It easily hangs on a wall or can be placed on a table top using the sturdy fold-out stand.

MULTIPLE MODES - Choose from 3 different displays: AM/PM or 24-hour format; the month, weekday, & date; or the indoor temperature in °C or °F, plus humidity. Language can be displayed in English, Dutch, French, German, Italian, Russian, or Spanish.

⏰TIME & TEMPERATURE PROJECTION: Perfect alarm clocks for bedrooms (NOT ATOMIC). The projected temperature changes from indoor temperature to outdoor temperature automatically. Alarm clock projected in a soft red color on ceiling or wall is easy to see throughout the room. Adjustable projection angles and brightness - It can be reversed by 180 degrees for optimal viewing and meet different users’ preferences.

⏰INDOOR/OUTDOOR THERMOMETER GAUGE & HUMIDITY MONITOR: Equipped with professional grade inside outside thermometer and humidity monitor, the clock provides the most accurate measurements. Displayed with Indoor/outdoor temperature and humidity, allows you to be aware if adjustments are necessary. Ideal alarm clock for home, keeps you and your family's living conditions optimal.

⏰WIRELESS COLOR WEATHER STATION: 12/24 hour, date, and weekday in large number; Clear weather patterns, mold alerts and mold risk are displayed on large 4.5” LCD screen. Digital weather station predicts the weather for the next 12 hours as well as the barometric pressure trend and temperature trend. Adjustable backlit dimmer (high- medium - low - out) with DC power adapter, enables you to set the display to a brighter setting in daytime and softer one at night.

SELF-SETTING, SELF-ADJUSTING CLOCK - Simply insert the batteries provided & the Marathon Atomic Wall Clock will synchronize to the correct time using radio frequencies broadcast from NIST’s Colorado Atomic Clock (only functions in North America).

LARGE DISPLAY - Our easy-to-read, 9-inch display and the sleek, contemporary design make this beautiful clock ideal for your home, office, school, or church. Easily hang it on the wall or place it on a table using the sturdy, fold-out stand.

MULTIPLE MODES - Choose between AM/PM or 24-hour format. The calendar displays month, day, and date. The indoor temperature can be displayed in Celsius or Fahrenheit. Language can be displayed in English, French or Spanish.

GLOW IN THE DARK ATOMIC CLOCK: See the time, Day or Night!, with the Sharp Atomic Clock with Glow in the Dark numbers and hands. For best results with the Glow in the Dark function: when you first receive the clock, place the clock in sunlight or bright light for 24 – 48 hours. After this time period, the clock will glow in the dark. The clock benefits from exposure to light during the day for optimum glow at night.

ATOMIC ACCURACY: The Atomic clock has a built-in receiver that automatically synchronizes itself with the WWVB radio broadcast by the US Government’s National Institute (NIST) in Fort Collins, Colorado. The Atomic Clock will always be accurate to within one second as it receives daily WWVB updates.

AUTOMATICALLY SETS: Clock resets regularly by radio-control to match the US Atomic Clock in Colorado and adjusts automatically for daylight savings time

【LARGE & COLORFUL LCD SCREEN】Comes with a large colorful backlit LCD screen, this digital projection alarm clock displays time, outdoor/indoor temperature (min/max readings included, in °C/°F), humidity, and more in clear digits. 4 levels of brightness are available for optimal vision.

【ADJUSTABLE PROJECTION】Projects time and temperature onto ceiling or walls so you can tell time simply lying on the bed. Adjust the clock projector forwards/backwards, change brightness of projection, and reverse projection in 180° to achieve maximum clarity.

【DUAL ALARMS & SNOOZE】Easily set 2 separate alarms and choose alarm schedule (weekdays/weekends/a full week) on your alarm clock for bedroom. Meanwhile, preset snooze time to sleep for extra 5-60 minutes. Don’t worry, alarms will last 2 minutes with increased volume to wake you up.

Intelli-Time Clock with Indoor Temperature: The vibrant color display shows the current date, time, indoor temperature, indoor humidity level, and moon phase — many aspects of a personal weather station

Simple Alarm Clock with Snooze: The classic alarm noise is perfect for kids, adults, or elders

Integrated USB Port (1.5a): Allows you to wake up to a fully charged phone, tablet, or a different 5V electronic device, a beneficial feature of any home weather clock

★【 Elegant & Smart Self-illuminated Clock 】: This elegant 18 Inch Premium LED clock is built with bright warm white lights and a smart light sensor on clock face which detects brightness/darkness of the ambient environment and automatically turns on/off lights in low/bright light. (does not light when switched to OFF).

★【Water Proof In/Outdoor Clock】: This premium outdoor clock is sealed with front and back rubberized gasket for protection from water and other outdoor elements.

★【 Premium Thermometer & Hygrometer】: This clock features a Thermometer with Fahrenheit/Celsius scales and a Hygrometer. (Premium type allows you to slightly adjust and calibrate）Allow the Thermometer & Hygrometer at least 3 hours to fully adjust itself to the tell the temperature and humidity in the environment.

Thermometer & Humidity Combo: Outdoor clock has built-in Analog hygrometer & thermometer combo. Automatically measures accurate Indoor/outdoor temperature degree from -40℉ to 140℉(-40℃ to 60℃), humidity readings from 0% to 100% RH.

Waterproof:The Premium Rubber Gasket is around the Silent Quartz Mechanism in the back, that locked the cover fits over and sealed. The inside of glass doesn't steam up, because the clock face was be sealed as well.

Elegant Design: Retro Black-Bronze frame , white dial face and large black numbers provide a good view.16" clock face is easy to read even from a distance. It's great for mounting to patio, garden, fence, lanai, garage, screened pool, poolside, farmhouse, yard or backyard.

Atomic Alarm Clock - The Atomic Clock has a built in receiver that automatically synchronizes itself with the WWVB radio broadcast by the US Government’s National Institute of Standards and Technology (NIST) in Fort Collins, Colorado. The Atomic Clock will always be accurate to within on second as it receives daily WWVB updates.

The Sharp Atomic Clock (Model - SPC932) can be easily mounted to the wall or can be used on table top or desk with the built in stand. 3 x AAA batteries Needed (not included).

Calendar and Day of Week Display - Always know what day of the week it is with a quick glance. The clock displays the calendar and the day of the week.

THE MODERN WALL CLOCK HAS BEEN PERFECTED. Great for any room at home, work or classroom. The classic black frame with satin finish and modern design compliments any room’s decor. The simple, elegant and versatile style is perfect for your kitchen, living room, bedroom, bathroom, office, meeting room or dining room.

EASY TO READ - Measuring at a full 14” round, our wall clock is easier to read from long distances, day or night. Razor sharp, dense black ink on pure white paper provides the perfect contrast for maximum readability.

PERFECT FOR INDOOR AND OUTDOOR USE - Our custom designed exterior battery cover combined with polycarbonate case and lens makes The Ultimate Wall Clock tough enough to handle the elements and prevent damage from falls.

MANTEL CLOCK: The Adelaide Mantel Clock features a sculpted wrought-iron frame with antique warm-grey finish as well as a Windsor Cherry finish and decorative molding wrapped base to compliment your home decor.

DURABLE: This clock has a sturdy metal frame to relieve stress in a busy household. Place it above your fireplace in the living room for a classic decorative accent piece with black Roman numerals, antique-finished serpentine hands and convex glass crystal to stand out over an aged dial.

CHIMES: Easily tell time with single-chime movement that plays the Westminster chime to strike each hour. Set the automatic nighttime chime shut-off for convenient volume control to have in any room.

🌦️【Atomic Accuracy】The atomic clock has a built-in receiver,that automatically receives the WWVB broadcast signal of the National Institute (NIST) of Fort Collins, Colorado, USA, and the signal will never change because it receives daily WWVB updates.Insert batteries, wait a few minutes as it sets itself【Note】The fragile screen is easy to damage during shipping. If the screen is broken on arrival, please contact our customer service to replace the product.

🌦️【Huge 4.5” Tall LCD Time Display】Atomic wall clock has large 4.5" tall LCDdisplay screen - easy to read, Displays time (hours, minutes, seconds), indoor and outdoor temperature, calendar and day of week.The large wall clock can be hung on the wall or placed on the table for standing, especially suitable for the elderly living at home.Very clear to read from across the room【Note:Smudges on the sccreen are expected but will go away quickly.】

🌈【Wireless Outdoor Sensor】DOVEET atomic clock has a built-in receiver that automatically receives the WWVB broadcast signal of the National Institute (NIST) of Fort Collins, Colorado, USA. It will measure accurately indoor/outdoor temperature & humidity in °F or °C, outdoor thermometer wireless sensor range up to 328ft(100M). Hope this atomic clock will be a nice assistant of your life.

Copper-finish indoor/outdoor atomic wall clock with thermometer

Measures temperatures from -40 to 120 degrees Fahrenheit

All-weather housing and glass lens

Clock will set itself to the correct time automatically by receiving the radio signal from Fort Collins, Colorado. No need to manually change the time from Standard to Daylight Savings and back, it all happens automatically.

Vintage black plastic frame, 10 inch diameter, 1.5 inch depth, Crystal clear glass cover

Simple white dial with black metal hands, Black Arabic numeral analog display, Easy to read

ANALOG HYGROMETER & THERMOMETER - The SkyNature 18 inch outdoor clock measures temperatures from -10 to 130 degrees Fahrenheit,and Humidity readings from 0% to 99% RH.

INDOOR/OUTDOOR DUAL USE - The waterproof large outdoor clock is designed to be hung outdoors with its UV & Weather-Resistance, or use indoors to decor your den,living room or office.

QUALITY CLOCK MATERIAL - Solid metal frame with glass lens & metal hands. The clocks operates on one AA carbon-zinc batteries (not included) to help keep the clocks precision Quartz movement. It offers silent non-ticking, sweeping movement mechanism.

【Atomic Wall Clock】: The Atomic clock has a built-in receiver, Receiving WWVB(RCC) radio wave signal to adjust time according to the time zone. Updating daylight saving time automatically, The Atomic Clock will always be accurate to within one second as it receives daily WWVB updates.

【Indoor & Outdoor Temperature Display】: The Wireless outdoor sensor (included) transmits the outdoor temperature to the atomic wall clock. The sensor can be placed anywhere within 100ft of the receiving unit. Outdoor temperature range: -4°F to 158 °F . Temperature display: ℃/℉.

【Alarm Clock With Snooze Function Large Display】: Equipped with 7.5 inch screen, Easy to Read, Easy to Use, Easy to Set up. Displays the Time, Day, Date, Weekday and Temperature . 12/24 Hour clock modes. Perfect for anyplace in your home, Friendly to the elderly.

【Atomic Clock with Indoor Outdoor Temperature 】Atomic wall clock with temperature monitor function,The Wireless outdoor sensor (included) transmits the outdoor temperature ( ° C /° F optional)to the large digital wall clock. Which means you can put them inside your patio, backyard, garden or courtyard,easily monitor outside conditions without going out.

【Enhanced Atomic Clock Technology】Atomic clock wall will always be accurate to within one second as it receives daily WWVB updates, just select your time zone at the setting buttons of the clock and turn on the DST if applicable. Automatically updates for daylight saving time,weekday,day,month,time,help you manage regular life.

【8.8'' Large Digital Wall Clock with 8S Backlight】Large atomic wall clock battery operated with an 8.8'' LCD TN high definition slim display, can simultaneously display date, time (12/24H), week,moon phase,indoor&outdoor temperature（° C/° F）,records the daily MIN & MAX data and display tendency.And the digits are big enough for easy-viewing.

【11.4 Inch Display Atomic Clock with Indoor Outdoor Temperature】Larger, clearer screen viewing angles, indoor outdoor temperature (°C/°F), 12/24 hour format, month-week-day display, atomic clock, daylight saving time symbol, alarm clock, low battery indicator

【Atomic Clock with WWVB Function】Additional WWVB function make it is convenient to use, you do not need to adjust time, the wall desk clock will adjust real time everyday with WWVB function on.

【Table Clock or Wall Clock】Two way for placement, easy to use. Table clock with 2 kickstands or wall clock with 3 hanging holes. 4*AA batteries (not included) for base unit and sensor.

🌈 HIGH DEFINITION DISPLAY: The atomic clock has an upgraded large LCD screen, which is friendly to the elderly or visual impairment. The screen displays indoor outdoor temperature, alarm, time and date; 6 time zones are available, including EST, CST, MST, PST, AKT and HST; the time display comes with 12 / 24 hour format, while the temperature display unit is (°F) / °C for easy reading.

🌈 DUAL INSTALLATION: LFF atomic wall clock has 2 installation methods, it includes a table stand and a wall mount to make it stand on the table or hang on the wall. It has simple buttons, easy to set. You can manually set the time zone, language, date, time, RCC reception, alarm clock and reception channel in sequence (Default channel 1).

🌈 POWERED BATTERY: Atomic clock indoor outdoor thermometer is powered by 4 AA batteries(not included), the wireless outdoor sensor is powered by 2 AAA batteries(not included). Functional and stylish design makes it a perfect decor to kitchen, living room, bedroom, library and office. (Note: no backlight display)

【12/24Hrs Format】This wooden digital wall clock has two time display formats, namely 12-hour format and 24-hour format. You can switch to your favorite time format by pressing the button on the back of the wall clock. Compared with the old hanging clock display, this wall clock is more suitable for modern style home decoration clocks.

【6 Level Automatic Brightness Adjustment】This atomic digital wall clock large display automatically adjusts the brightness. The wall clock has a photoresistor at the bottom of the circle. It can automatically adjust the brightness of the LED digital display time according to the environmental brightness. The LED digital display is brighter during the day, and the LED digital display will be dimmed at night, which will not affect your sleep.

【USB Power/Suspension Design】This LED wooden digital wall clock is powered by USB, the USB cable length is 16.5Ft, and the longer USB cable is more convenient to use; the wooden wall clock has an excellent easy-hanging design, which makes it easier to hang. The USB power supply and easy hanging design allows you to hang the LED digital wall clock anywhere.

16 Inch Round Wall Clock For Indoor/Outdoor Use

Built In Hygrometer & Thermometer

Uses 1 Aa Battery (Not Included)

Clock will automatically set itself to the correct time by receiving the radio signal from Fort Collins, Colorado. No need to manually change the time from Standard to Daylight Savings and back, it all happens automatically.

Vintage black plastic frame, 12 inch diameter, 1.5 inch depth, Crystal clear glass cover

Simple white dial with black metal hands, Black Arabic numeral analog display, Easy to read

LARGE EASY TO READ DISPLAY - Bright Full Color Display with 3-Step adjustable brightness settings – Gives you the option to run the weather station by electric powered or battery powered. ALWAYS ON DISPLAY with AC OPERATION: While operating with the AC adaptor, the backlight will remain on and can be dimmed or turned off using the BACKLIGHT button. 5 SECOND ON-DEMAND BACKLIGHT with BATTERY OPERATION: While operating under battery power, use the BACKLIGHT button to illuminate the display for 5 seconds.

ATOMIC ACCURACY – Atomic Time with 12 or 24 Hour Display. The Sharp Weather Station with built in Atomic clock has a built-in receiver that automatically synchronizes itself with the WWVB radio broadcast by the US Government’s National Institute (NIST) in Fort Collins, Colorado. The Atomic Clock will always be accurate to within one second as it receives daily WWVB updates.

INDOOR AND OUTDOOR TEMPERATURE AND HUMIDITY DISPLAY: Tell at a glance the current indoor and outdoor temperature and humidity with the easy to read full color display. The indoor temperature and humidity sensors are integrated into the main unit, while the Wireless outdoor sensor (included) transmits the outdoor temperature and humidity to the Sharp Atomic Weather Station. The sensor can be placed anywhere within 100ft of the receiving unit. The wireless technology means no wire installation is necessary. Note: The wireless sensor is included in the box, separate from the clock. Sensor requires 2 x AAA batteries (not included).

Weather-resistant case and large, easy-to-read numerals.

Maintains radio contact and automatically synchronizes with the National Bureau of standards' atomic clock in boulder, Colorado.

Automatically syncs up with daylight savings time changes.

ATOMIC ACCURACY - This R-Wave atomic wall clock technology receives time calibration radio signals to ensure extreme accuracy. The analog wall clock also adjusts automatically for standard and daylight saving time.

TEMP & HUMIDITY SENSORS- Radio Wave wall clock has built-in Analog hygrometer & thermometer combo. Automatically measures Indoor/outdoor temperature degree from -40℉ to 140℉(-40℃ to 60℃), humidity readings from 0 to 100% RH.

EASY HANGING - Silver Aluminum frame makes it the perfect decorative R-wave wall clock for kitchen,living room, bedroom, bathroom,office, classroom,cafe. Atomic round wall clocks 10’’ with Temperature and Humidity sensors also are perfect for lanai, patio,pool, camper,travel trailer, Recreational Vehicle (RV) etc. Large nail slot offers easy no-fuss and fast installation.