SKAGWAY 2, ALASKA

Period of Record General Climate Summary - Growing Degree Days

Station:(508528) SKAGWAY 2
From Year=1965 To Year=2010
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	0	3	7	81	293	483	578	524	326	117	8	3	2426
40 S	0	4	11	93	385	868	1447	1971	2298	2415	2423	2426	2426
45 M	0	0	0	23	150	333	423	369	182	32	1	0	1514
45 S	0	0	1	24	174	506	930	1299	1481	1513	1514	1514	1514
50 M	0	0	0	6	53	185	269	216	62	4	0	0	793
50 S	0	0	0	6	59	243	512	727	790	793	793	793	793
55 M	0	0	0	1	12	65	122	79	8	0	0	0	289
55 S	0	0	0	1	13	79	200	280	288	289	289	289	289
60 M	0	0	0	0	2	13	29	14	0	0	0	0	58
60 S	0	0	0	0	2	15	44	58	58	58	58	58	58

Corn Growing Degree Days
50 M	0	1	2	43	138	234	288	249	116	19	0	0	1090
50 S	0	1	3	46	184	418	706	954	1070	1089	1090	1090	1090

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