WILLITS 1 NE, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(049684) WILLITS 1 NE
From Year=1960 To Year=2005
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	652	524	520	430	292	146	51	55	110	272	503	667	4223
60	497	383	366	284	162	56	9	10	36	141	354	512	2810
57	404	300	276	203	99	25	2	2	15	84	267	419	2095
55	343	246	218	155	66	12	0	1	7	55	212	358	1674
50	195	124	99	62	16	1	0	0	0	13	98	211	819

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