SEQUIM 2 E, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(457544) SEQUIM 2 E
From Year=1980 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	53	57	114	199	373	494	613	620	455	261	105	43	3388
40 S	53	111	225	424	797	1292	1904	2524	2980	3241	3346	3388	3388
45 M	9	11	30	79	222	344	458	465	305	123	30	7	2083
45 S	9	20	50	129	350	694	1152	1617	1922	2045	2075	2083	2083
50 M	1	1	4	17	94	196	303	310	162	35	4	1	1127
50 S	1	2	6	22	116	313	616	926	1087	1123	1127	1127	1127
55 M	0	0	0	1	25	74	154	159	53	5	0	0	472
55 S	0	0	0	2	26	100	254	413	467	472	472	472	472
60 M	0	0	0	0	3	18	45	45	8	0	0	0	119
60 S	0	0	0	0	3	21	65	110	119	119	119	119	119

Corn Growing Degree Days
50 M	14	19	50	95	179	246	331	344	248	129	35	9	1699
50 S	14	33	83	178	357	603	934	1279	1527	1655	1690	1699	1699

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 Jul 28, 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