DUNSMUIR RS, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(042572) DUNSMUIR
From Year=1906 To Year=1978
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	9	90	351	424	602	806	1002	1062	741	625	234	66	6013
40 S	9	99	450	874	1477	2282	3284	4346	5088	5713	5947	6013	6013
45 M	0	33	221	276	449	656	847	907	591	470	129	15	4594
45 S	0	33	254	530	978	1635	2482	3389	3980	4450	4579	4594	4594
50 M	0	8	118	145	299	509	692	752	441	315	49	0	3330
50 S	0	8	126	271	570	1079	1771	2524	2965	3280	3329	3330	3330
55 M	0	0	47	55	169	368	537	597	292	167	7	0	2240
55 S	0	0	47	102	272	640	1177	1774	2066	2233	2240	2240	2240
60 M	0	0	9	16	79	240	385	442	160	53	1	0	1384
60 S	0	0	9	24	103	344	729	1171	1331	1383	1384	1384	1384

Corn Growing Degree Days
50 M	6	58	224	255	344	485	631	646	454	421	138	39	3700
50 S	6	63	287	542	886	1371	2002	2648	3102	3523	3661	3700	3700

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