GRIDLEY, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(043639) GRIDLEY
From Year=1893 To Year=1955
Heating Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
65	670	465	393	180	63	10	3	0	7	111	398	596	2895
60	515	324	244	82	16	1	2	0	1	38	253	441	1916
57	422	240	164	42	5	0	2	0	0	16	172	349	1413
55	361	187	119	24	2	0	2	0	0	9	124	289	1117
50	212	80	37	3	0	0	1	0	0	1	40	150	525

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