A post in which I am apparently very old

I got the heat bill tonight, and am trying to figure out if I'm saving money or not. It's hard to tell, because it's been so butt-ass cold for WEEKS.

Bill Jan 09 - $109.69
Bill Jan 10 - $150.21
37% increase

Therms (gas usage) Jan 09 - 69
Therms Jan 10 - 107
55% increase

Avg temp Jan 09 - 49F
Avg temp Jan 10 - 38F
22% drop

Also, only two weeks of the bill reflect the new windows, which were installed 12-21. Billing period ended 1-5. So I guess I'm just going to have to look at next month's bill and hope the temp goes back more into the normal range. Lord I'm old. Next I guess I'll start a log on how long its been since I had my tires rotated. Sheesh.