Here is a chart I threw together for random colleges around the country:
College | Avg Annual High | Avg Annual Low | Avg Precipitation |
UCLA | 77 | 50 | ~17 inches |
Evergreen (Olympia, WA) | 77 | 31 | ~51 inches |
Trinity U (San Antonio, TX) | 95 | 37 | ~31 inches |
Florida Atlantic (Boca Raton, FL) | 91 | 56 | ~60 inches |
Univ of Connecticut | 78 | 16 | ~49 inches |
Univ of Indianapolis | 85 | 17 | ~40 inches |

A less-common problem, though not completely unheard of, is the student who enjoys the changing seasons (and perhaps the type of activities that accompany a good snowfall) and finds themself unhappy at a school in a year-round warmer, drier climate.
It's important to note the types of natural disasters that are common in each area, as well. Growing up with a pervasive threat of earthquakes is different than being used to an annual tornado or flood season. Some students adapt readily but for others, having one incident of an unfamiliar natural disaster near their college can send them packing. This is especially relevant since it seems that these events are happening with greater frequency and severity lately.
Also please consider whether your child shows symptoms of Seasonal Affective Disorder--a condition that causes people to sink into depression when they aren't exposed to enough sunlight on a regular basis.
There are so many things to consider when finding the "right match" for your child. I hope you will choose to include weather-related conditions on your list of criteria. It can only help to ensure that you are making the choice that will best set your child on the road to success.