EMMONAK, ALASKA

Period of Record General Climate Summary - Growing Degree Days

Station:(502825) EMMONAK
From Year=1977 To Year=1994
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	0	60	313	429	373	140	7	0	0	1323
40 S	0	0	0	0	61	373	802	1176	1315	1323	1323	1323	1323
45 M	0	0	0	0	22	178	275	223	43	0	0	0	743
45 S	0	0	0	0	22	201	476	699	742	743	743	743	743
50 M	0	0	0	0	7	79	135	95	5	0	0	0	322
50 S	0	0	0	0	7	86	221	317	322	322	322	322	322
55 M	0	0	0	0	2	28	46	26	0	0	0	0	101
55 S	0	0	0	0	2	29	75	101	101	101	101	101	101
60 M	0	0	0	0	0	6	11	5	0	0	0	0	22
60 S	0	0	0	0	0	6	18	22	22	22	22	22	22

Corn Growing Degree Days
50 M	0	0	0	0	27	142	177	141	36	1	0	0	524
50 S	0	0	0	0	28	170	347	488	524	524	524	524	524

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