GLACIER RANGER STN, WASHINGTON

Period of Record General Climate Summary - Growing Degree Days

Station:(453160) GLACIER RANGER STN
From Year=1949 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	10	21	58	177	382	548	703	687	495	230	58	13	3382
40 S	10	31	89	266	648	1196	1899	2586	3081	3311	3369	3382	3382
45 M	3	3	13	70	233	399	548	532	346	104	13	1	2263
45 S	3	5	18	89	321	720	1267	1799	2145	2249	2262	2263	2263
50 M	0	0	1	20	115	252	393	377	203	33	1	0	1396
50 S	0	1	2	22	137	388	781	1158	1361	1395	1396	1396	1396
55 M	0	0	0	3	43	131	243	227	88	6	0	0	741
55 S	0	0	0	3	46	177	420	647	736	741	741	741	741
60 M	0	0	0	0	11	56	119	106	25	0	0	0	318
60 S	0	0	0	0	12	68	187	294	318	318	318	318	318

Corn Growing Degree Days
50 M	3	8	36	117	219	306	415	402	278	108	16	2	1910
50 S	3	11	47	164	383	689	1104	1506	1784	1892	1908	1910	1910

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