GLACIER RS, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(453160) GLACIER RANGER STN
From Year=1914 To Year=1983
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	9	19	57	174	384	535	683	682	499	249	55	15	3360
40 S	9	28	86	259	643	1177	1861	2542	3041	3290	3345	3360	3360
45 M	2	2	13	70	234	385	528	527	349	120	12	2	2244
45 S	2	4	18	88	322	707	1235	1761	2111	2231	2242	2244	2244
50 M	0	0	2	20	113	239	373	372	206	39	1	0	1366
50 S	0	0	2	22	135	374	747	1119	1325	1364	1366	1366	1366
55 M	0	0	0	3	40	120	225	222	91	7	0	0	708
55 S	0	0	0	3	42	162	387	609	700	708	708	708	708
60 M	0	0	0	0	10	47	105	101	25	1	0	0	289
60 S	0	0	0	0	10	58	163	263	289	289	289	289	289

Corn Growing Degree Days
50 M	3	10	38	116	228	302	406	404	288	126	18	3	1942
50 S	3	13	51	167	395	697	1103	1507	1795	1922	1939	1942	1942

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