GIANT FOREST, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(043397) GIANT FOREST
From Year=1921 To Year=1968
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	13	16	51	116	265	477	756	720	559	323	108	29	3432
40 S	13	29	80	196	461	938	1694	2414	2973	3296	3403	3432	3432
45 M	1	2	12	45	150	337	601	565	412	196	43	6	2372
45 S	1	4	16	61	211	548	1149	1714	2126	2322	2366	2372	2372
50 M	0	0	1	10	65	212	446	411	273	96	12	1	1528
50 S	0	0	2	12	76	289	735	1146	1419	1515	1527	1528	1528
55 M	0	0	0	1	19	113	294	261	151	32	2	0	873
55 S	0	0	0	1	20	132	426	688	838	871	873	873	873
60 M	0	0	0	0	3	47	154	129	61	5	0	0	399
60 S	0	0	0	0	3	50	204	334	394	399	399	399	399

Corn Growing Degree Days
50 M	14	17	48	86	164	282	467	445	347	199	70	22	2159
50 S	14	31	79	165	329	611	1077	1522	1868	2067	2137	2159	2159

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