SAN GREGORIO 2 SE, CALIFORNIA

Period of Record General Climate Summary - Heating Degree Days

Station:(047807) SAN GREGORIO 2 SE
From Year=1954 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	485	408	432	384	318	227	169	150	157	255	370	479	3834
60	331	268	278	237	168	91	44	33	41	117	223	325	2156
57	241	187	188	153	88	34	9	6	9	55	143	236	1350
55	184	137	134	102	47	13	2	1	2	28	98	180	929
50	74	44	35	19	3	0	0	0	0	2	25	69	271

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