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Tempest Weather System with Built-in Wind Meter, Rain Gauge, and Accurate Weather Forecasts, Wireless, App and Alexa Enabled

4.4 4.4 out of 5 stars 1,426 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
Amazon's Choice in Weather Stations by WeatherFlow

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About this item

  • As featured in the Wall Street Journal, CBS Innovation Nation, Bob Villa 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
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Tempest Weather System with Built-in Wind Meter, Rain Gauge, and Accurate Weather Forecasts, Wireless, App and Alexa Enabled

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$339.00
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Product details

  • Package Dimensions ‏ : ‎ 10.75 x 6.38 x 6.18 inches; 3.1 Pounds
  • Item model number ‏ : ‎ 2020
  • Batteries ‏ : ‎ 1 Lithium Ion batteries required. (included)
  • Date First Available ‏ : ‎ March 18, 2020
  • Manufacturer ‏ : ‎ WeatherFlow
  • ASIN ‏ : ‎ B0868WY7NY
  • Customer Reviews:
    4.4 4.4 out of 5 stars 1,426 ratings

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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!

Tempest sensor device outdoors with app screen next to it showing current weather conditions

Tempest Features Include:

  • Outdoor temp, humidity, dew point, feels like temp.
  • Wind speed, wind direction, average & gusts
  • Lightning activity (strikes and distance up to 25 miles)
  • Rain onset, intensity, duration, and accumulation
  • Wind chill, wet bulb temp, DeltaT, Air Density
  • UV index, brightness, solar radiation
  • Auto-calibration with Continuous Learning technology
  • Long-range wireless connectivity (1000ft)
  • Free iOS and Android apps & personal weather page
  • Works with Alexa, IFTTT, and more
  • Direct Rachio integration (code available via WeatherFlow support)

passenger holds phone on a plane displaying tempest forecast

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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 free 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.

WeatherFlow's Commitment to You

We stand behind our products and the technology that powers them. Each Tempest comes with a 60-day return policy, and if you aren't blown away by the better forecast in the first 2 months, simply return it. Enjoy stress-free shopping with a company committed to customer happiness.

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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 fall
  • Turn on attic exhaust fans if the temperature is high
  • Turn on ceiling fans if the temperature is high
  • Turn on whole house attic fan & turn off the AC if the outside temperature is cooler than inside
  • Turn on outside accent lighting when light level falls below a set limit
  • Turn on an engine block heater on work days when the outside temperature is close to freezing
  • Adjust heating/cooling levels based on the temperature and humidity forecast
  • Adjust indoor lighting levels based on outdoor sunlight levels
  • Adjust 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 Specs

Air Temperature -40°F to 140° F
Relative Humidity 0-100%
Atmospheric Pressure Up to 1100 mbar
Lightning Activity Detects lightning 0 to 25 miles away
Wireless Up to 1000 ft
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 Daily total
Rain Accumulation Daily total
Mount Adjustable pole mount or screw mount
Power Solar powered

Product guides and documents

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Customer reviews

4.4 out of 5 stars
4.4 out of 5
1,426 global ratings

Customers say

Customers like the quality, appearance, and ease of setup of the weather station. They mention that it's well made, durable, and reliable. They appreciate the sleek design and the lack of moving parts. That said, opinions are mixed on performance, accuracy, and connectivity.

AI-generated from the text of customer reviews

160 customers mention158 positive2 negative

Customers find the setup of the weather station to be easy. They mention that it has no moving parts, and the app looks good. They also appreciate the user-friendly interface and the ability to connect to Android assistant. Overall, most are satisfied with the ease of setup and use of the product.

"...Ease of system setup and the ability to remain connected to both the local WI-FI setup as well as the internet are also important...." Read more

"...As described, its set up couldn't have been more simple. I mounted mine 15 feet above the ground on 1.25 diameter heavy duty mast pole...." Read more

"...First off setting up this weather station is the fastest and easiest by a very long way...." Read more

"...This device is so simple to install and configure. I can't imagine a better design...." Read more

46 customers mention46 positive0 negative

Customers are satisfied with the information provided by the Tempest weather station. They mention that the app provides great information and the amount of information this station provides is amazing. The station is a valuable tool for staying informed about the weather, and it presents the information in a logical fashion. The app is very good and provides historical information for your local area.

"...The app is very elegant and very modern looking. Provides all the data that I was seeking...." Read more

"..."alerts" which you can turn off -- but again, amazing accuracy and great data to have...." Read more

"...The Tempest app really seems polished and presents the info in a logical fashion...." Read more

"...It has its own well-executed app that provides loads of data points; but it can also feed its data into the Carrot app, which is a real bonus for..." Read more

44 customers mention40 positive4 negative

Customers are satisfied with the quality of the weather station. They mention it's well-made, durable, and reliable. Some say that the solar power feature is excellent. Overall, customers are happy with their purchase and recommend it to others.

"...The two issues that are paramount for me are accuracy and durability...." Read more

"...between my hub and the Tempest is a good 75ft and it has been totally reliable. ***See edit at bottom.- Easy to mount...." Read more

"...This worked great as is solid/strong. Hope this is helpful." Read more

"...Bottom line is reliability and accuracy. It is a little expensive but so are other higher end systems that just aren't going to last as long...." Read more

39 customers mention34 positive5 negative

Customers generally like the appearance of the weather station. They mention it has a great design, the setup and the app is well-made, and the information is presented in a logical fashion. Some say it's fascinating to watch a storm track using this feature, and they love the history part.

"...The unit is unusual looking and operates using non-traditional technology for several of its data captures..." Read more

"...through other users and was thoroughly impressed with its amazingly simple design (from the end users standpoint) and exceptional functionality, so..." Read more

"...The app is very elegant and very modern looking. Provides all the data that I was seeking...." Read more

"...The Tempest app really seems polished and presents the info in a logical fashion...." Read more

33 customers mention33 positive0 negative

Customers like the solid state non moving parts of the weather station. They say it's a super plus that it has no moving wind vanes or wind speed cups to hang up in ice and snow, and that the advantage of this system is that no moving parts to year out.

"...no wires, no batteries and , no moving parts. " What more could you want?..." Read more

"...So, the big advantage of this system is no moving parts to year out...." Read more

"...The Tempest solves all those issues, with no moving parts and true solar power...." Read more

"...No moving parts is a major benefit of this system. No more clogged rain gauges!!..." Read more

208 customers mention142 positive66 negative

Customers are mixed about the accuracy of the weather station. Some mention that the forecasts are getting a lot more accurate, while others say that the rain accuracy takes a while to calibrate. The build seems solid and the readings are accurate and consistent. However, some customers say that it does not have the most accurate wind readings.

"...The haptic rain guage collects local data, which is then filtered through AI and compared to other nearby weather data collection devices and systems..." Read more

"...If you want a simple to install, simple to use, great statistic keeping weather station this is it. However, be prepared to pay for it." Read more

"...Wind is harder to say is inaccurate, but there definitely have been times where it would register only 1-2 MPH, but I'd look at the trees and think..." Read more

"...Rain accuracy, there are a lot of complaints that it isn’t accurate but I have to say so far it seems to be about spot on and I do LOVE that it..." Read more

135 customers mention90 positive45 negative

Customers are mixed about the performance of the weather station. Some mention that it works well and like the history reporting, while others say that it doesn't work well in the Pacific Northwest, it stopped working after six months, and the hub quit functioning. However, some customers say that the product works differently than a traditional rain gauge, but is very accurate after.

"...amazingly simple design (from the end users standpoint) and exceptional functionality, so I purchased it even though the price was 2 times the cost..." Read more

"...It is just almost fool proof and really anyone can set it up and get great results...." Read more

"...It does work differently than a traditional rain gauge, but I do think it is very accurate after studying and comparing it to other local..." Read more

"...It does natively upload to pws weatherunderground. Overall it’s a good unit and simple to install and setup...." Read more

36 customers mention21 positive15 negative

Customers have mixed opinions about the connectivity of the weather station. Some mention that the connectivity is superb, easy to set up, and there are no connection issues. However, others say that the Tempest weather sensor will not connect to the hub, even if it's 5 feet away. Some customers also say that it never would connect to their app or the base station.

"...It has never become disconnected from either my mesh WI-FI setup or the internet since going operational, even though the unit is installed above a..." Read more

"I had an issue with weather station disconnecting from hub. I contacted Support via the app and got a prompt reply back...." Read more

"...account creation, simple to connect to 2.4G WiFi, hub unit finds and connects to Tempest easily...." Read more

"...Well, they have been causing the Tempest hub to disconnect. I recently moved the hub due to always having to reboot it...." Read more

Easy and accurate
5 Stars
Easy and accurate
I am an IT geek, so it was easy to install. However, the steps were so simple, I am sure pretty much anyone can install it within a few minutes.In the picture, the post is crooked, but I shimmed the base and installed the Tempest so it was vertical. I have compared its app to other weather apps, and it seems to be at least as accurate and even more accurate in most cases. I love that it doesn't have spinning parts that attract curious animals which is why my old Osprey station doesn't work anymore. The horses ate it.The only drawback is that it doesn't have a standalone panel to get real-time stats, it requires the app.
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Top reviews from the United States

Reviewed in the United States on July 23, 2021
65 people found this helpful
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Reviewed in the United States on September 18, 2023
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5.0 out of 5 stars Great Product - But not perfect
Reviewed in the United States on September 18, 2023
I became aware of this product through other users and was thoroughly impressed with its amazingly simple design (from the end users standpoint) and exceptional functionality, so I purchased it even though the price was 2 times the cost of similar devices with more complicated designs (separate sensors and many parts which you have to put together). As described, its set up couldn't have been more simple. I mounted mine 15 feet above the ground on 1.25 diameter heavy duty mast pole. The trickiest part was making sure the arrow on the device was oriented to true north (so you wind direction readings are accurate) from the ground. The software could not have been easer to set up and connect to the device (although I would suggest doing this and ensuring the device is working properly before permanently mounting). The software allows you to drill down on each of the reported sensors to not only get current readings but all readings since the device was installed. It provides a rudimentary forecasting element but I have not found it to be any more (or less) accurate then local weather apps. It gives you a great statistical package for sensors on your device which is phenomenal. It also gives you the ability to locate, and read other devices which I believe is an outstanding feature. Although, I cant sing it praises enough it has had two outlier readings which I cannot understand but they have seemed to have corrected themselves. One was wind speed. During the recent hurricane (to which we were located on the side (about 125 miles from landfall), no local damage, flooding etc.), Wind speeds were gusting to but with the highest recorded was 30 MPH at one point in time. However an hour larger with no corresponding wind the device started showing a constant wind speed of 60 MPH and did so for at least 24 hours. Once the sun came out and dried things up it has now seemed to have reset and is working correctly. The second issue was a reading of a .5 inches of rain when we had no rain or clouds in the sky. This too has corrected itself. With the two exceptions (which someone other than a lay person might be able to explain) the device and its software could not have performed any better. If you want a simple to install, simple to use, great statistic keeping weather station this is it. However, be prepared to pay for it.
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43 people found this helpful
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Top reviews from other countries

Larry 1946
5.0 out of 5 stars Excellent home weather station ...
Reviewed in the United Kingdom on November 20, 2023
One person found this helpful
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Davleo Kokotov
5.0 out of 5 stars Excellent device - high-tech and precise measurement
Reviewed in Germany on August 12, 2022
Amazon Customer
5.0 out of 5 stars Nothing to improve....
Reviewed in Australia on December 1, 2023
Henrik Roland
4.0 out of 5 stars Absolutely a very fine weather station but.....
Reviewed in Germany on December 24, 2022
Phill
4.0 out of 5 stars Wrong PSU for UK
Reviewed in the United Kingdom on November 5, 2022
15 people found this helpful
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