DEER PARK AP, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(452066) DEER PARK 2 E
From Year=1911 To Year=1977
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	2	4	40	183	423	591	814	748	479	199	20	4	3506
40 S	2	6	46	228	651	1242	2057	2805	3284	3482	3502	3506	3506
45 M	0	0	8	83	275	441	659	593	332	92	2	1	2487
45 S	0	0	8	91	367	808	1467	2060	2392	2484	2487	2487	2487
50 M	0	0	0	29	151	294	504	438	200	30	0	0	1648
50 S	0	0	0	29	181	475	979	1418	1618	1648	1648	1648	1648
55 M	0	0	0	7	65	164	351	288	98	7	0	0	980
55 S	0	0	0	7	72	236	588	875	973	980	980	980	980
60 M	0	0	0	1	20	72	209	154	35	1	0	0	493
60 S	0	0	0	1	22	94	303	456	492	493	493	493	493

Corn Growing Degree Days
50 M	0	2	37	148	296	388	528	505	350	164	10	1	2429
50 S	0	3	40	188	484	871	1399	1904	2255	2419	2428	2429	2429

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