Price: £349.00
(as of Sep 08, 2025 16:19:17 UTC – Details)

Product Description

More than hardware, the meticulously designed Tempest Weather System leverages our patented Nearcast Technology, a combination of curated weather data sets, machine learning, and state-of-the-art modeling capabilities. The result is a more accurate local forecast that only gets better over time. A revolutionary design with no moving parts, nearly zero maintenance, instant online data, and a rich API powering a growing list of third-party applications. Save time and money with smart home integrations, and protect your family and property with instant alerts to warn of rain, lightning, wind, and much more. Install the Tempest home weather system in less than five minutes, and it will do the rest!

Outdoor temp, humidity, dew point, feels like temp.Wind speed, wind direction, average & gustsLightning activity (strikes and distance up to 25 miles)Rain onset, intensity, duration, and accumulationWind chill, wet bulb temp, DeltaT, Air DensityUV index, brightness, solar radiationAuto-calibration with Continuous Learning technologyLong-range wireless connectivity (1000ft)iOS and Android apps & personal weather pageWorks with Alexa, IFTTT, and moreDirect Rachio integration (code available via WeatherFlow support)

A Better Forecast For Your Location

Our patented Nearcast Technology uses machine learning to compare your live station data against trusted data sources to ensure your station never drifts out of calibration. AI and data science techniques are used to improve the forecast for your exact location. No more guessing!

A Weather Station So Advanced, It’s Simple

A revolutionary design with no moving parts, nearly zero maintenance, instant online data, a personal webpage, and a rich API powering a growing list of third-party applications. Fully solar-powered, install the Tempest home weather system in less than five minutes.

Turn Your Smart Home Into a Genius

Use your weather data to save on heating and cooling, optimize your smart sprinkler controller, alert your family to approaching storms, and more. Tempest is compatible with Rachio, IFTTT, Siri, Alexa, Homey, and many more.

A Leader in the Private Weather Tech Industry

Tempest’s team of scientists, forecasters, and developers specialize in weather networks, data science, and forecast modeling. Our weather technology is used by the National Weather Service, Coast Guard, Defense Threat Reduction Agency, and more.

Here are just some of the ways to use weather observation and forecast data from the Tempest System with your smart home:

Adjust your irrigation schedule based on the rain that’s fallen… or the rain that’s forecast to fallTurn on attic exhaust fans if the temperature is highTurn on ceiling fans if the temperature is highTurn on whole house attic fan & turn off the AC if the outside temperature is cooler than insideTurn on outside accent lighting when light level falls below a set limitTurn on an engine block heater on work days when the outside temperature is close to freezingAdjust heating/cooling levels based on the temperature and humidity forecastAdjust indoor lighting levels based on outdoor sunlight levelsAdjust awning and shade positions based on ambient light, solar radiation, wind, etc

In addition to direct integration with your smart home systems, there’s also a growing list of devices and software that let you do all sorts of things with the data from your Tempest System. The WeatherFlow Tempest System exposes a collection of self-service APIs and documentation that make it easy for developers to build apps and integrations that access data on behalf of a Tempest station owner. With both remote access (via REST & Web Socket) and local access (via Bluetooth Low Energy, UDP Broadcast).

Tempest Home Weather System Specs

Air Temperature -40°F to 140° F Relative Humidity 0-100% Atmospheric Pressure Up to 1100 mbar Lightning Activity Detects lightning 0 to 40 kilometers away Wind Speed 0 to 100 mph Wind Direction 0 to 359° Ambient Light 1 to 128 kLUX UV Index 0 to 14 Index Solar Irradiance 0 to 1900 W/m2 Rain Onset First Drops Rain Duration & Accumulation Daily total Mount Adjustable pole mount or screw mount Wireless Up to 1000 ft Power Solar Powered

Batteries ‏ : ‎ 1 Lithium Ion batteries required.
Product Dimensions ‏ : ‎ 10.75 x 10.75 x 22 cm; 725.75 g
Date First Available ‏ : ‎ 18 Mar. 2020
Manufacturer ‏ : ‎ WeatherFlow
ASIN ‏ : ‎ B0868WY7NY
Item model number ‏ : ‎ 2020
Country of origin ‏ : ‎ China
Guaranteed software updates until ‏ : ‎ unknown
Delivery information:: We cannot deliver certain products outside mainland UK ( Details). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout.
Best Sellers Rank: 48,865 in Garden (See Top 100 in Garden) 94 in Weather Stations
Customer reviews: 4.2 4.2 out of 5 stars 1,624 ratings var dpAcrHasRegisteredArcLinkClickAction; P.when(‘A’, ‘ready’).execute(function(A) { if (dpAcrHasRegisteredArcLinkClickAction !== true) { dpAcrHasRegisteredArcLinkClickAction = true; A.declarative( ‘acrLink-click-metrics’, ‘click’, { “allowLinkDefault”: true }, function (event) { if (window.ue) { ue.count(“acrLinkClickCount”, (ue.count(“acrLinkClickCount”) || 0) + 1); } } ); } }); P.when(‘A’, ‘cf’).execute(function(A) { A.declarative(‘acrStarsLink-click-metrics’, ‘click’, { “allowLinkDefault” : true }, function(event){ if(window.ue) { ue.count(“acrStarsLinkWithPopoverClickCount”, (ue.count(“acrStarsLinkWithPopoverClickCount”) || 0) + 1); } }); });
As featured in the Wall Street Journal and Wired, Tempest reports temperature, solar radiation and UV, humidity, barometric pressure, wind speed and direction, dew point, lightning strikes, rainfall and more.
Solar-powered outdoor sensor with wireless transmission to hub up to 1000+ ft and updates every three seconds.
No moving parts, nearly zero maintenance, instant online access via AI-powered app, personal weather webpage, and direct link to Weather Underground. Installation in minutes – Downloadable User Guide and Installation Manual listed under Product Information section.
Uses WeatherFlow’s advanced machine learning to continuously fine-tune your weather station’s accuracy for a better local forecast over time.
Share your Tempest dashboard with friends and family with a special web page. Link your data to dozens of smart home apps & integrations. Or build your own app with the Tempest API.
The Tempest app will walk you through a few simple steps, including connecting your home’s WiFi network. Once you’re up and running the app will quickly become your go-to for real-time weather conditions, lightning and rain alerts, and the most accurate forecast for your location. And now with the Apple Watch App, your weather information is available at a glance. Add Tempest Weather to your Apple watch face complications.
Data available in the Tempest app includes: Temp, humidity, dew point, feels like, heat index Barometric pressure, sea-level pressure, trends Lightning detection and alerts up to 40 km Wind, UV, solar irradiance Rain rate, accumulation, rain onset alerts 10-day forecast Historical weather data graphs