WEED FIRE DEPT, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(049499) WEED FIRE DEPT
From Year=1957 To Year=1989
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	999	779	766	601	397	183	63	75	218	474	769	964	6287
60	844	638	611	453	261	92	20	25	114	326	619	809	4810
57	751	553	518	367	189	54	9	11	71	245	529	716	4012
55	689	497	457	312	147	36	5	5	50	197	469	654	3515
50	534	356	308	186	65	9	1	0	14	97	323	499	2393

Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. This is done for each day of the month and summed.
Table updated on Apr 5, 2006
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Western Regional Climate Center, wrcc@dri.edu