Add On AcuRite Iris 5 in 1 Weather Station Display ONLY Model 01528 - Works
Takes 6 AA batteries. Make sure this will work with your station, perhaps in your garage. Reviews say Acurite has great customer service and this manual is online. Below is what I found online.
The AcuRite 01528 is a wireless color weather station that provides a 12–24 hour forecast using patented Self-Calibrating Technology. It's also known as the AcuRite Iris (5-in-1) Weather Station and can measure indoor and outdoor temperature, humidity, wind speed and direction, and rainfall. The station is compatible with Google Home and can be remotely monitored