ELECTRON HEADWORKS, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(452493) ELECTRON HEADWORKS
From Year=1948 To Year=1980
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	21	31	48	133	321	468	617	595	437	217	62	30	2979
40 S	21	52	100	233	554	1021	1639	2233	2670	2887	2949	2979	2979
45 M	3	6	10	47	180	318	462	440	289	99	15	5	1875
45 S	3	10	20	67	247	565	1027	1467	1756	1855	1870	1875	1875
50 M	0	1	1	12	79	178	308	285	153	30	2	0	1049
50 S	0	1	2	14	93	271	579	864	1017	1047	1048	1049	1049
55 M	0	0	0	2	24	77	163	142	55	4	0	0	468
55 S	0	0	0	2	27	104	266	408	463	468	468	468	468
60 M	0	0	0	0	5	24	61	48	12	0	0	0	151
60 S	0	0	0	0	5	29	90	138	151	151	151	151	151

Corn Growing Degree Days
50 M	3	12	29	86	196	266	375	353	261	114	19	5	1720
50 S	3	16	45	131	327	593	967	1321	1582	1696	1715	1720	1720

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