DAVIS 2 WSW EXP FARM, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(042294) DAVIS 1 WSW
From Year=1893 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	607	422	349	212	85	16	1	1	14	105	360	593	2765
60	452	284	205	100	25	2	0	0	2	33	218	439	1760
57	360	204	131	54	9	1	0	0	0	13	144	347	1262
55	300	154	90	32	4	0	0	0	0	6	103	287	976
50	161	57	24	6	0	0	0	0	0	1	31	150	431

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 Oct 31, 2012
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