SIERRAVILLE RANGER STN, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(048218) SIERRAVILLE RANGER STN
From Year=1948 To Year=2005
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	8	20	54	160	358	555	754	712	522	291	71	11	3517
40 S	8	28	83	243	601	1155	1909	2622	3144	3435	3506	3517	3517
45 M	1	3	13	74	225	407	599	557	376	165	22	2	2443
45 S	1	4	18	92	317	723	1322	1880	2255	2420	2442	2443	2443
50 M	0	0	2	24	118	267	444	403	237	71	3	0	1570
50 S	0	0	2	26	144	410	854	1257	1495	1566	1569	1570	1570
55 M	0	0	0	3	48	146	293	253	120	21	0	0	883
55 S	0	0	0	3	51	197	490	742	862	883	883	883	883
60 M	0	0	0	0	12	60	155	123	39	3	0	0	392
60 S	0	0	0	0	13	73	228	350	389	392	392	392	392

Corn Growing Degree Days
50 M	14	29	65	157	272	387	515	507	416	287	94	24	2769
50 S	14	44	109	266	538	925	1440	1947	2364	2651	2745	2769	2769

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 Apr 5, 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