LANCASTER FSS, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(044749) LANCASTER FSS
From Year=1974 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	159	224	388	545	828	1053	1274	1232	994	700	318	139	7855
40 S	159	383	771	1317	2145	3198	4472	5703	6698	7398	7716	7855	7855
45 M	59	111	242	397	673	903	1119	1077	844	545	189	52	6210
45 S	59	170	412	809	1482	2384	3504	4580	5425	5970	6159	6210	6210
50 M	13	38	121	258	519	753	964	922	694	392	88	13	4774
50 S	13	50	171	429	948	1701	2665	3587	4281	4673	4761	4774	4774
55 M	2	7	46	143	371	603	809	767	544	249	26	2	3569
55 S	2	9	55	198	568	1171	1980	2747	3291	3541	3567	3569	3569
60 M	0	1	11	63	238	455	654	612	397	130	4	0	2565
60 S	0	1	12	75	313	768	1422	2034	2431	2560	2565	2565	2565

Corn Growing Degree Days
50 M	129	153	242	333	513	668	806	771	620	451	236	128	5051
50 S	129	282	524	857	1370	2038	2844	3616	4235	4686	4923	5051	5051

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 Jul 28, 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