PLAIN, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(456534) PLAIN
From Year=1948 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	1	3	31	150	384	559	763	749	501	198	20	1	3359
40 S	1	4	35	185	569	1128	1890	2639	3140	3338	3358	3359	3359
45 M	0	0	5	58	239	409	608	594	352	91	3	0	2360
45 S	0	0	6	64	303	712	1319	1913	2265	2357	2360	2360	2360
50 M	0	0	0	16	121	263	453	439	213	32	0	0	1536
50 S	0	0	0	16	137	399	852	1291	1504	1536	1536	1536	1536
55 M	0	0	0	3	46	138	301	287	103	7	0	0	886
55 S	0	0	0	3	50	188	489	776	879	886	886	886	886
60 M	0	0	0	0	13	57	167	153	34	1	0	0	425
60 S	0	0	0	0	13	70	237	390	424	425	425	425	425

Corn Growing Degree Days
50 M	1	4	37	129	264	354	483	478	353	156	10	0	2270
50 S	1	5	42	171	435	789	1272	1750	2104	2260	2270	2270	2270

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