MCKINLEY PARK, ALASKA

Period of Record General Climate Summary - Growing Degree Days

Station:(505778) MCKINLEY PARK
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	0	0	0	5	112	360	461	334	103	8	0	0	1385
40 S	0	0	0	6	118	478	939	1273	1376	1384	1385	1385	1385
45 M	0	0	0	1	42	218	307	191	35	2	0	0	796
45 S	0	0	0	1	43	261	568	759	794	796	796	796	796
50 M	0	0	0	0	12	104	165	83	8	1	0	0	372
50 S	0	0	0	0	12	116	281	363	371	372	372	372	372
55 M	0	0	0	0	3	35	60	26	1	0	0	0	126
55 S	0	0	0	0	3	38	98	124	126	126	126	126	126
60 M	0	0	0	0	0	7	12	6	0	0	0	0	26
60 S	0	0	0	0	0	8	20	26	26	26	26	26	26

Corn Growing Degree Days
50 M	0	0	0	6	86	216	256	182	60	3	0	0	809
50 S	0	0	0	6	92	308	564	746	806	809	809	809	809

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