MOTT IS ISLE ROYALE, MICHIGAN

Period of Record General Climate Summary - Growing Degree Days

Station:(205637) MOTT ISLAND ISLE ROYAL
From Year=1948 To Year=2011
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M -99 -99 -99 -99 195 393 600 690 440 188 3 -99 -99
40 S -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
45 M -99 -99 -99 -99 87 244 445 535 295 82 0 -99 -99
45 S -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
50 M -99 -99 -99 -99 26 116 291 381 165 22 0 -99 -99
50 S -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
55 M -99 -99 -99 -99 4 39 151 231 72 3 0 -99 -99
55 S -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
60 M -99 -99 -99 -99 0 8 55 106 23 0 0 -99 -99
60 S -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
Corn Growing Degree Days
50 M -99 -99 -99 -99 100 200 323 391 205 64 3 -99 -99
50 S -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99 -99
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