Why is temperature and Radar so far off?

[USPilot]

The temperature for my location is at least 8 degrees off and the radar shows clear when it is raining outside. Every other radar is showing rain and Windy is showing clear. The location is Rocky Hill, CT USA.

[Korina]

@USPilot Hello, did you try all the models? It is essential to find model, which is the best for your location.

[Gkikas LGPZ]