SUSANVILLE ARPT, CALIFORNIA

Period of Record General Climate Summary - Growing Degree Days

Station:(048702) SUSANVILLE ARPT
From Year=1931 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	11	28	103	234	466	679	924	865	624	340	79	16	4368
40 S	11	39	142	376	841	1521	2445	3309	3933	4273	4352	4368	4368
45 M	1	5	37	125	320	530	769	710	475	206	26	3	3206
45 S	1	6	43	168	487	1017	1786	2496	2971	3177	3203	3206	3206
50 M	0	0	9	52	192	383	614	555	331	103	4	0	2244
50 S	0	0	9	61	254	637	1251	1806	2137	2239	2244	2244	2244
55 M	0	0	1	14	94	248	460	401	199	38	0	0	1455
55 S	0	0	1	15	109	357	816	1217	1416	1455	1455	1455	1455
60 M	0	0	0	1	34	134	308	253	94	8	0	0	833
60 S	0	0	0	1	35	170	478	730	825	833	833	833	833

Corn Growing Degree Days
50 M	8	25	90	186	325	442	581	555	435	264	70	10	2990
50 S	8	32	122	308	634	1075	1656	2211	2646	2911	2980	2990	2990

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