YAKUTAT STATE AP, ALASKA

Period of Record General Climate Summary - Growing Degree Days

Station:(509941) YAKUTAT WB AIRPORT
From Year=1949 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base	Jan.	Feb.	Mar.	Apr.	May	Jun.	Jul.	Aug.	Sep.	Oct.	Nov.	Dec.	Annual
40 M	2	2	1	19	128	305	432	419	254	80	12	3	1657
40 S	2	4	5	24	152	457	889	1308	1562	1642	1654	1657	1657
45 M	0	0	0	3	38	159	277	264	117	16	1	0	875
45 S	0	0	0	3	41	200	477	740	858	874	875	875	875
50 M	0	0	0	0	7	46	125	115	27	1	0	0	321
50 S	0	0	0	0	7	53	178	293	320	321	321	321	321
55 M	0	0	0	0	1	5	20	17	2	0	0	0	46
55 S	0	0	0	0	1	6	27	44	46	46	46	46	46
60 M	0	0	0	0	0	0	1	1	0	0	0	0	3
60 S	0	0	0	0	0	1	2	3	3	3	3	3	3

Corn Growing Degree Days
50 M	0	0	1	12	44	101	161	168	86	13	0	0	587
50 S	0	0	1	12	57	158	319	486	573	586	587	587	587

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