WILBUR, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(459238) WILBUR
From Year=1892 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	1	5	55	201	432	613	847	814	548	240	26	2	3784
40 S	1	6	61	262	694	1306	2153	2967	3516	3756	3782	3784	3784
45 M	0	0	13	98	284	463	692	659	400	126	5	0	2741
45 S	0	0	14	112	396	859	1551	2210	2610	2736	2741	2741	2741
50 M	0	0	2	39	160	316	537	504	262	51	1	0	1873
50 S	0	0	2	41	200	517	1054	1558	1821	1872	1873	1873	1873
55 M	0	0	0	12	74	186	385	353	147	16	0	0	1173
55 S	0	0	0	12	87	273	658	1010	1157	1173	1173	1173	1173
60 M	0	0	0	3	27	90	242	214	66	3	0	0	645
60 S	0	0	0	3	30	120	362	576	641	644	645	645	645

Corn Growing Degree Days
50 M	0	3	43	150	291	394	540	523	370	174	12	0	2502
50 S	0	3	46	196	487	882	1422	1944	2315	2489	2501	2502	2502

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