REDDING FIRE STN 2, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(047296) REDDING
From Year=1893 To Year=1979
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	196	281	429	594	847	1070	1317	1261	1039	775	423	220	8452
40 S	196	477	907	1501	2348	3418	4735	5995	7034	7809	8232	8452	8452
45 M	88	156	281	445	692	920	1162	1106	889	620	278	103	6741
45 S	88	245	526	971	1663	2583	3745	4851	5739	6359	6638	6741	6741
50 M	28	64	158	302	537	770	1007	951	739	466	152	35	5210
50 S	28	93	251	553	1090	1860	2867	3818	4557	5023	5175	5210	5210
55 M	7	18	72	179	386	620	852	796	589	319	66	8	3912
55 S	7	25	97	276	662	1282	2134	2930	3519	3838	3904	3912	3912
60 M	1	3	25	88	250	472	697	641	441	190	23	1	2832
60 S	1	5	29	118	368	839	1537	2177	2618	2809	2831	2832	2832

Corn Growing Degree Days
50 M	92	139	232	347	525	683	826	794	659	472	221	101	5092
50 S	92	231	463	810	1335	2018	2845	3638	4298	4770	4991	5092	5092

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