You can actually use the temp sensor outside. Although the site says it won't handle the range, it's 113 degrees in my backyard right now in Santa Clarita and that is what my sensor is indicating. I only use it to know when it's cool enough to open the windows and turn my whole house fan on. I have one in my garage too. When a sensor is linked to a thermostat (I have 2 thermostats), you select what source you use to decide if the AC or Heat turns on. For me, I always use my upstairs loft thermostat to determine what trips the temperature. I have 2 thermostats and 4 sensors total.....A 3 pack of sensors is only about $75 online. All my Google home hubs display the city temp as well. However, it is always off by a few degrees from what the temp actually is in my backyard. Final comment....I can ask google what the temp is in the backyard (or any of the 6 sources) and it tells me.
