GLACIER BAY, ALASKA

Period of Record General Climate Summary - Growing Degree Days

Station:(503294) GLACIER BAY
From Year=1966 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	0	1	1	36	190	363	463	434	256	82	6	1	1833
40 S	0	2	3	39	228	591	1054	1488	1744	1825	1832	1833	1833
45 M	0	0	0	5	68	213	308	279	115	14	0	0	1003
45 S	0	0	0	5	74	287	595	874	989	1003	1003	1003	1003
50 M	0	0	0	1	12	79	155	127	18	1	0	0	393
50 S	0	0	0	1	13	93	247	374	392	393	393	393	393
55 M	0	0	0	0	1	14	36	23	0	0	0	0	74
55 S	0	0	0	0	1	15	51	74	74	74	74	74	74
60 M	0	0	0	0	0	1	3	2	0	0	0	0	6
60 S	0	0	0	0	0	2	4	6	6	6	6	6	6

Corn Growing Degree Days
50 M	0	0	0	14	72	156	199	175	71	7	0	0	693
50 S	0	0	0	14	85	241	440	616	687	693	693	693	693

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