WILLOW CREEK 1 NW, CALIFORNIA

Period of Record General Climate Summary - Cooling Degree Days

Station:(049694) WILLOW CREEK 1 NW
From Year=1968 To Year=2005
Cooling Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
55	1	2	14	60	202	383	577	557	377	130	10	0	2315
57	0	1	5	38	156	326	515	495	319	92	4	0	1952
60	0	0	1	17	100	245	423	402	235	50	1	0	1473
65	0	0	0	2	38	130	275	253	115	13	0	0	826
70	0	0	0	0	10	55	149	124	36	1	0	0	375

Cooling Degree Day units are computed as the difference between the daily average temperature and the base temperature. (Daily Ave. Temp. - Base Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is above the base temperature. Negative numbers are discarded. Example: If the days high temperature was 95 and the low temperature was 51, the base 60 heating degree day units is ((95 + 51) / 2) - 60 = 13. 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