Annual Heating Degree Days

This map seems to be a good indicator of how cold different parts of the US are. (Each day accumulates heating degrees by the number of degrees the temperature is below 65 Fahrenheit. Days above 65 get zero.) I ran across it at work the other day, and found it interesting to compare a few different places I've lived. For example:

- Seattle = 5000
- Northfield, MN = 8000
- Wayland, IA = 6200
- Dalton/Orrville, OH = 6500 (my birthplace and ancestral home, more or less)

Of course, you'll be more interested in your own places.