Brand new weather station, put it up in October. I'm at 210 feet ASL FWIW. My car thermometer backs up my weather station. For example today, 87 on my wx station and once I drove, temp dropped from 91 parked on blacktop driveway at startup, down to 87 once driven. Went up to 88 by CW Post, 90 by Roslyn and 95 by Americana (Manhasset) all the way to Great Neck. All while driving along Northern Blvd. Same thing happened yesterday, my station is sited as best it can be on property. I personally think a lot of weather stations are not sited correctly and don't have a FARS. I could use my Netatmo if you want, as it was a blazing 93.5 yesterday, but I know it's not accurate & strapped to a deck post.
My neighbor has an old VP1 on his roof with anemometer, which has trees interfering with wind, etc. Thankfully he doesn't put his data online.