Question 1

How many hours of daylight does this need for continuous operation?  I live in the North, where the nights get long.

Accepted Answer

I've had  a Tempest since it was first introduced. It's relatively easy to set up and maintenance free. I live in the Pacific Northwest and the Tempest is pretty useless during wintertime as the solar panels don't  get enough ambient light to fully charge. For the last year, WeatherFlow has promised a battery power pack accessory to mitigate this issue but they keep delaying its release.

Question 2

Other than the initial cost of the sensor unit, is there any on-going access fee or subscription charge that is required to use the system?

Accepted Answer

Hi there!  The Tempest Weather System is a one-time purchase and there are no required subscriptions/fees for ongoing use.  I hope this helps!

Kind regards,

Question 3

We live in the mountains and frequently get storms with large damaging hail. Is the Tempest sensor warranted against hail damage?

Accepted Answer

I also live in the mountains but in the tropics so I cannot directly answer about hail.   I do however want to mention how in my opinion, their warranty is really, really good.   I had occasion where my Tempest was recording accurately but not keeping history.   Weather-Flow immediately sent me a new one, no questions asked, and indeed, did not even request that I return the faulty one.   Just a great experience and I'm sure they would give support in the case of hail.
Cheers,     Marcel Lauzon, Costa Rica

Question 4

Does this weather station measure to the nearest whole degree or tenth of a degree?

Accepted Answer

On the main screen of the Tempest iPad app and on my Apple watch the temperature is displayed as a whole number.  However, if you select the device on the main screen of the iPad tempest app you get more detailed information and on this page it displays temperature  as xx.x (i.e. in tenths).  Thus I believe the answer to your question is that it measures it to tenths of a degree although it displays it to the nearest whole degree depending on where you look.

ASIN	B0868WY7NY
Additional Features	Wireless, app and Alexa compatible, built-in anemometer, rain meter, accurate weather forecast
Amazon Bestseller	#254,460 in DIY, Tools & Garden ( See Top 100 in DIY, Tools & Garden ) #3,033 in Outdoor Décor
Are batteries included?	No
Brand	WeatherFlow
Brand Name	WeatherFlow
Color	white
Connectivity Technology	Wi-Fi
Customer Reviews	4.3 out of 5 stars 1,785 Your Review
Frequency	0.33 Hz
Included Components	Anemometer, Rain Meter
Item Dimensions D x W x H	10.6D x 21W x 21.6H cm
Item Weight	726 g
Model	2020
Number of Batteries	1 Lithium Ion batteries required.
Part Number	WF-TWS01
Power Source	Battery Powered
Recommended Uses For Product	Home
Sensor Technology	Motion, Capacity
Shape	Rectangular
Specific Uses For Product	Humidity, learning, pressure, temperature, time, wind speed
Style Name	Modern
Temperature Accuracy	1 °C
Temperature Reading Accuracy	plus_minus_1_degree_celsius
UPC	859883004298
Upper Temperature Range	140 Degrees Fahrenheit

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

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