You've gotta remember that the weather station for your area may actually be quite a while away from where you are.
E.g. our weather station is in lyneham which is an RAF base about 10 miles away, and although the land around us is pretty similar so we tend to get the same weather, yours may not, i.e. the weather station could be out of a valley or mountainous area, whereas you'd be in one, protected from the wind and the sun, making for a colder climate in your location compared to where the station is.
Best off getting your own little home weather station or barometer