Micro climate.

I've always been impressed with how, even though the Official Weather Station for our area may report temperatures of, say, 39 degrees, I could have frost on my lawn. Or how when the weather station shows dry and still just a mile away, it's raining and gusting at my house.

Climate is what you expect. Weather is what you get. Micro climates personalize what you get on a regular basis. Maybe your house is near a creek, in the shadow of a hill and in the lee of the wind? You'll find that your house is dank in the cool months and muggy in the warm months, despite your local predictions of dry and fresh.  Maybe you live next to a major heat sink, like a large concrete parking lot and between large low brick and concrete structures? In such a case, your first impression out the front door will always be that a sweater or jacket is less necessary than the rest of the people in your zip code.

I also like to watch weather come through, and see the reactions by the weather stations. For example:


Click to embiggen.
 

Check out what's going on there. The two weather stations on the map on the right show vastly different temperatures despite their proximity. But also you'll note that the higher temperature station still shows a wind from the south, while the western one now shows a brisk wind from the northwest. On the bottom graph, you can see that the change in the wind brought some rain that ramped up quickly, and the top graph shows that the temperature and the dew point dropped rapidly in concert with the changing wind direction (fourth graph). All in minutes.

I have GOT to get a decent digital-compatible reporting weather station.
For I am a weather geek.