Temps have been between 40 and 70.
I have all my tanks posted on the data base.
http://www.greenhybrid.com/compare/m.../car/4046.html
The things that kill me most are rain and wind. My commute is mostly east-west and most winds we have are north or south. The cross winds are almost as bad as a head wind so I am killed on both commutes by the wind. It is very rare that I have a good tail wind.
It will be interesting to see what summer brings (90-110 temps with a must for a/c).