There are lots of iPhone apps that will tell you the weather in your city. If you want to know the weather at your specific house, you need a device that can provide you with temperature and other readings. Back in 2015, I reviewed a device called Eve Weather that checked the temperature, humidity, and air pressure. That product was discontinued and replaced by the Eve Degree, which I reviewed in 2018. The Eve Degree was an improvement because it was smaller and it displayed the temperature right on the front of the device, making it possible to learn the temperature without having to open an app on an iPhone. The Eve Degree is now discontinued and its replacement is (once again) called Eve Weather. Eve Systems sent me a free review unit of this device ($79.44 on Amazon) and I've been putting it through its paces. Like its predecessors, this device does a great job of telling you the weather at your home (or wherever you place the Eve Weather). And this new Eve Weather is the best version yet.
Hardware
Like the prior two generations, the new Eve Weather measures the temperature, humidity, and air pressure. Unlike those prior units, the new Eve Weather displays all of that information on the front of the device. (The prior Eve Degree displayed the temperature, but not the humidity or air pressure.) In the following picture, the new Eve Weather is on the left, and the older Eve Degree is on the right.
As you can see, both the Eve Degree and the new Eve Weather are the same size: 2.1" x 2."1 x 0.6".
Temperature is a number that we all understand, and I suspect that most folks understand the humidity percentage as well. However, air pressure is often measured in inches of mercury (inHg) or millibars of mercury (mbar), and I suspect that most of us don't understand the significance of any specific number. Plus, to really know the significance of an air pressure number, you need to know not just what it is now but how it has changed. Thus, instead of displaying a specific, current value for air pressure, the Eve Weather smartly uses the barometer information to predict the 12-hour weather trend (such as sunny, partly cloudy, rainy, etc.) based on the current barometric pressure and how quickly it has changed over the prior few hours. An icon corresponding to that weather trend is displayed on the front.
The Eve Weather is designed to be placed outside. The Eve website says that the Eve Weather is IPX4 water-resistant, which means that it is fine for water to splash on the device, but you should not spray a water jet at the device, and it is best to avoid direct rain. (Note that the Eve manual says that it is IPX3, but I reached out and a representative of the company told me that the correct number is IPX4.) There is a hole on the back that can be used to hang the Eve Weather on a wall.
You should not place the Eve Weather in a location where it will receive direct sunlight. If you do that, the sun will heat up the housing and make the temperature readings too high. Instead, you want a spot that is always in the shade, such as a location on a porch or a place on the north-facing side of a home. The device works best if it is about six feet above the ground level. At my house, the Eve Weather sits in the corner of a window sill that is on my back porch, the same place that an Eve Degree used to sit. There have been rare occasions, such as during Hurricane Ida last year, when it was blown down, but otherwise, that location has worked well for me for many years.
The device comes with a CR2450 coin cell battery. You can replace it as needed by twisting off the battery cover on the back of the device. I don't remember how often I replaced the battery on the Eve Degree, but it was fairly rare. Maybe once every year or so?
Software
Although it is nice that you can get information from the Eve Weather by looking at it, the real advantage of this device is that it works with your iPhone — both with the built-in Home app and with Eve's own free app.
In the built-in Home app, you can see the temperature and humidity. However, the Home app does not show the barometer reading or the associated weather forecast.
The Eve app provides you with more information. First, you can easily see not only the current temperature but also the high and low temperature for the past 24-hours. Second, you can see the current barometer reading and the icon indicating the 12-hour forecast.
Additionally, with the Eve app you can tap to get even more information. If you tap the line with the current temperature, you can also see a chart showing the temperature for the past hour, day, week, month, or year. You can swipe to see older information.
For example, using the year view, I can easily see that the coldest day at my home last year was Mardi Gras day, February 16 — a day that would normally be devoted to parades, but instead the streets were quiet because of COVID-19. (Although it was a very cold Mardi Gras day, it was not the coldest: that was in 1899 when it was 22 degrees.)
Even though I was using the former Eve Degree back in 2021 instead of the new Eve Weather, the Eve app can migrate data from an older device so that you can continue to track weather even as you upgrade to a new Eve device.
If you tap even further, you can see the specific measurements that are recorded in the app every ten minutes.
Seeing all of this information, including trends over time, is nice. But note that the Eve Weather itself, like the Eve Degree, can only hold past data for about two weeks or so. Thus, you need to open up the Eve app on your iPhone at least once every two weeks for the most recent data to be copied into the app.
Eve Weather, like Eve Degree, uses Bluetooth. Thus, one way to see the latest temperature is to get within Bluetooth range of the Eve Weather. Eve Weather is more useful when it is within Bluetooth range of a HomeKit hub, such as an Apple TV or a HomePod mini. That way, you can access the latest weather information from Eve Weather from any location — either at your home or away from home.
Eve Weather also supports Thread, which is an open protocol that Apple and other manufacturers are supporting. Right now, there are very few Thread-compatible devices, but I suspect that number to increase in the near future. Once you have a Thread network at your house, you won't have to worry about keeping an Eve Weather within Bluetooth range of a HomeKit hub, and instead you just need to keep it in the general area of a device that supports the Full Thread protocol.
Automation
You can use the information provided by Eve Weather to trigger home automation. For example, if you have a HomeKit-compatible blue light somewhere in your house, you can create a simple automation to make that blue light turn on any time the weather gets below a certain point, such as below freezing. HomeKit automations options are rather limited right now, so you currently cannot do much more than turn other HomeKit devices on or off. In the future, I'd like to see more advanced options, such as the ability to send yourself a text message if it gets below or above a certain temperature. But those limitations are due to Apple, not Eve.
Conclusion
Eve Weather gives you an easy way to see the current and past temperature at your house. It works so well with the Eve and Home apps on your iPhone that you may never look at the face of the Eve Weather itself, but if you do, it is nice that you can now see all of the data, not just the current temperature like you could on the Eve Degree. And if you want to use the weather at your home to trigger HomeKit automations, the Eve Weather can help you do that as well. The features are similar enough to an Eve Degree that if you are still using that now discontinued device, I don't see much reason to upgrade for the sake of upgrading. But if you need to replace an Eve Degree or if you are ready to start using a weather station at your house, the Eve Weather works great.
