A Smarter Home Weather System

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An AI-Powered Weather App With Guaranteed Accuracy

While weather apps abound, the Tempest app leverages real-time data, advanced forecast modeling and the oversight of in-house meteorologists. Data from each Tempest is processed with advanced machine learning which checks the information for accuracy, allowing us to apply daily calibrations and ultimately improve your forecast over time.

A Weather Station
So Advanced, It’s Simple

A revolutionary design with no moving parts, nearly zero maintenance, instant online data, a free personal webpage, and a rich API powering a growing list of third-party applications. Install the Tempest home weather system in less than five minutes and it will do the rest!

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A leader in the private weather technology industry

For more than 20 years, WeatherFlow’s team of atmospheric scientists, forecasters, and developers have specialized 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 thousands of satisfied consumers around the globe.

Turn Your Smart Home
Into a Genius

Trigger your outdoor lights based on the actual brightness of the sky. Enable your thermostat to use the weather conditions outside your home to conserve heating and cooling use. Automate your sprinklers to operate based on rainfall. Get text alerts when lightning is approaching. Save time and money with a home that can optimize itself.

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All About the Data

Accurate measurements from your location, along with data from other Tempest Systems, flows to our data processing center. There we also collect ALL other relevant weather data, including measurements from satellites, aircraft, radars and other surface weather stations. Our process ultimately yields standardized data and a real-time analysis product. Not every measurement is of equal value (e.g. wind ‘shadows’ affect how wind data is utilized) but our big data analytics adjust accordingly, meaning every Tempest System can make a difference.

Hyper-Local Forecasting

Our forecast system initializes with the ECMWF, the highly acclaimed European global forecast model, the best of NOAA’s forecast models and WeatherFlow’s own in-house modeling suite . Over key areas, WeatherFlow’s operational forecast system (WF WRF) assimilates the most valuable observations into this powerful baseline to provide detailed regional forecasts.

Do something about the Changing Weather

Tempest data, along with all our real-time useful information, is part of data sets which are shared with the National Weather Service (NWS-NOAA) and other met agencies across the world, supporting their mission of predicting dangerous weather and warning the public of potential risks. As forecasting becomes more difficult and weather patterns increasingly unpredictable, each Tempest helps contribute to a better global forecast.

Don - Verified Owner

June 2019

“As an old engineer, I really appreciate the thought and care that you’ve put into your product.”


July 2019

“Flat out awesome technology and the best weather station I have ever had!”

Nels - Verified Owner

WF Community, June 2019

“I meant to also give a shout out to the amazing WeatherFlow team. They said they would deliver us a great product and they did.”

Eric - Verified Owner

May 2020

“To have this much power in one self sufficient unit is a dream come true. Plus, the neighbors all love the way it looks on the fence.”

Andrew - Verified Owner

July 2019

“WOW!!! That’s what I call great customer support and standing behind your product.”

Victor - Verified Owner

May 2020

“It’s amazing how it tracks and charts rain intensity, accumulation, lightning activity and wind speed/direction, along with many other parameters. It’s truly an incredible PWS!”


Feb 2019

“This system is truly revolutionary. We highly recommend it to anyone who needs or wants a weather station! Well worth the investment!”

Dan - Verified Owner

May 2020

“Set up was a breeze. My Tempest was up and running in less than 10 minutes, and that included an email exchange with their support team to help me troubleshoot an issue that turned out to be operator error!”

Brad - Verified Owner

May 2020

“Temperatures have been spot on, wind readings are responsive and accurate. The lighting detection is unbelievable – you can track storms heading in and leaving with just this feature alone. Highly recommend the new Tempest.”

60 Day Money Back Guarantee

2 Year Warranty
10 Year Extended Warranty