WELLPINIT, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(459058) WELLPINIT
From Year=1923 To Year=2007
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	6	53	204	425	645	886	868	559	234	22	1	3905
40 S	1	7	61	264	690	1335	2221	3089	3648	3882	3904	3905	3905
45 M	0	1	12	99	279	496	731	713	411	122	4	0	2868
45 S	0	1	13	112	391	887	1618	2331	2742	2864	2868	2868	2868
50 M	0	0	1	40	157	350	576	558	273	50	0	0	2004
50 S	0	0	1	41	197	547	1123	1682	1954	2004	2004	2004	2004
55 M	0	0	0	13	73	218	423	406	157	15	0	0	1304
55 S	0	0	0	13	86	304	726	1132	1290	1304	1304	1304	1304
60 M	0	0	0	4	26	114	279	263	76	2	0	0	764
60 S	0	0	0	4	31	145	423	686	762	764	764	764	764

Corn Growing Degree Days
50 M	0	2	31	130	257	398	554	547	351	146	7	0	2424
50 S	0	3	34	164	421	819	1373	1920	2271	2417	2423	2424	2424

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