IMPERIAL CO AP, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(044224) IMPERIAL FAA AIRPORT
From Year=1962 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	353	201	122	41	4	0	0	0	0	10	109	347	1188
60	208	89	44	8	0	0	0	0	0	3	37	199	588
57	133	43	18	2	0	0	0	0	0	1	16	121	335
55	92	24	8	1	0	0	0	0	0	1	8	80	214
50	30	4	1	0	0	0	0	0	0	0	2	21	57

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