LANCASTER, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(044747) LANCASTER
From Year=1917 To Year=1972
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	144	219	366	554	783	1026	1290	1222	993	692	317	130	7735
40 S	144	363	728	1282	2065	3091	4381	5603	6595	7288	7605	7735	7735
45 M	59	110	224	406	628	876	1135	1067	843	538	186	47	6118
45 S	59	168	392	799	1426	2302	3437	4504	5347	5885	6071	6118	6118
50 M	15	40	114	270	474	726	980	912	693	387	86	11	4707
50 S	15	55	169	439	913	1639	2618	3531	4223	4610	4696	4707	4707
55 M	2	9	42	157	325	576	825	757	543	244	26	2	3508
55 S	2	11	54	210	535	1112	1936	2693	3236	3481	3506	3508	3508
60 M	0	1	9	73	196	428	670	602	394	127	4	0	2504
60 S	0	1	10	82	279	707	1377	1979	2373	2500	2503	2504	2504

Corn Growing Degree Days
50 M	135	178	262	361	483	630	779	730	603	461	253	126	5002
50 S	135	313	575	936	1420	2050	2829	3559	4162	4623	4876	5002	5002

M = Monthly Data
S - Running sum of monthly data.
Growing 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.
Corn Growing Degree Day units have the limitations that the maximum daily temperatures greater than 86 F are set to 86 F and minimums less than 50 F are set to 50 F.
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