Heck, I get that kind of variance in my part of this county. So many micro-climates here. I'm 1/2 mile off of the paved road and a 75' drop in elevation.
I use a weather website called wunderground.com
People buy weather stations from Amazon, set them up, then connect to this website via the internet. It has a street-level map you zoom in/out of (can see the precipitation radar imposed right over your address). In my rural area, at one point there were easily 30 stations set up within a 10 mile radius of me. The temp variations just in that small geography were amazing.
Thats sounds really cool, Im now interested and will be checking it out. Thanks!