FORT JONES RANGER STN, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(043182) FORT JONES RANGER STN
From Year=1936 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	16	48	126	264	469	674	918	861	631	356	92	22	4476
40 S	16	64	190	454	923	1597	2514	3375	4006	4362	4454	4476	4476
45 M	2	10	43	142	320	524	763	706	481	219	30	4	3243
45 S	2	12	55	197	517	1041	1804	2509	2990	3209	3239	3243	3243
50 M	0	1	8	59	188	377	608	551	335	107	6	0	2239
50 S	0	1	9	68	256	632	1240	1791	2126	2233	2239	2239	2239
55 M	0	0	0	14	89	239	453	397	202	37	1	0	1431
55 S	0	0	0	15	104	343	796	1193	1394	1431	1431	1431	1431
60 M	0	0	0	1	29	127	301	249	93	6	0	0	807
60 S	0	0	0	1	30	157	458	707	800	807	807	807	807

Corn Growing Degree Days
50 M	9	50	130	231	354	449	562	541	463	319	94	12	3212
50 S	9	58	188	419	773	1221	1783	2324	2787	3106	3200	3212	3212

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