EAGLE HARBOR CG, MICHIGAN

Period of Record General Climate Summary - Growing Degree Days

Station:(202332) EAGLE HARBOR
From Year=1899 To Year=1972
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	9	64	234	465	697	696	487	249	33	2	2936
40 S	0	0	10	73	308	773	1470	2165	2652	2901	2934	2936	2936
45 M	0	0	3	27	133	319	542	541	342	141	10	0	2058
45 S	0	0	3	30	163	482	1024	1564	1906	2048	2057	2058	2058
50 M	0	0	0	9	65	192	388	387	213	70	2	0	1326
50 S	0	0	0	10	75	266	654	1041	1254	1324	1326	1326	1326
55 M	0	0	0	3	26	98	244	241	113	30	0	0	754
55 S	0	0	0	3	28	126	370	611	724	754	754	754	754
60 M	0	0	0	1	8	42	127	123	49	10	0	0	360
60 S	0	0	0	1	8	50	178	300	350	360	360	360	360

Corn Growing Degree Days
50 M	0	0	5	35	130	255	407	399	244	108	11	1	1595
50 S	0	0	5	41	171	426	832	1231	1475	1583	1595	1595	1595

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