KOBUK, ALASKA

Period of Record General Climate Summary - Growing Degree Days

Station:(504964) KOBUK
From Year=1953 To Year=1979
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	0	0	3	96	425	544	425	140	5	0	0	1638
40 S	0	0	0	3	99	524	1068	1493	1633	1638	1638	1638	1638
45 M	0	0	0	0	37	282	390	277	59	1	0	0	1046
45 S	0	0	0	0	38	319	710	986	1045	1046	1046	1046	1046
50 M	0	0	0	0	11	158	245	149	18	0	0	0	579
50 S	0	0	0	0	11	168	413	562	579	579	579	579	579
55 M	0	0	0	0	3	67	122	63	3	0	0	0	258
55 S	0	0	0	0	3	70	192	254	258	258	258	258	258
60 M	0	0	0	0	0	24	42	19	0	0	0	0	85
60 S	0	0	0	0	0	24	66	85	85	85	85	85	85

Corn Growing Degree Days
50 M	0	0	0	1	71	248	315	233	72	1	0	0	942
50 S	0	0	0	1	72	320	635	869	941	942	942	942	942

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