ISHPEMING, MICHIGAN

Period of Record General Climate Summary - Growing Degree Days

Station:(204127) ISHPEMING
From Year=1898 To Year=1987
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 10 105 363 627 804 736 480 219 26 1 3372
40 S 0 1 11 116 479 1107 1910 2646 3127 3346 3372 3372 3372
45 M 0 0 3 56 241 479 649 581 339 126 8 0 2482
45 S 0 0 3 60 301 779 1428 2009 2348 2474 2482 2482 2482
50 M 0 0 1 28 146 336 494 427 215 62 2 0 1711
50 S 0 0 1 29 175 511 1005 1432 1647 1709 1711 1711 1711
55 M 0 0 0 12 78 211 342 281 121 26 0 0 1073
55 S 0 0 0 12 90 302 644 926 1046 1072 1073 1073 1073
60 M 0 0 0 4 35 115 205 158 59 8 0 0 584
60 S 0 0 0 4 39 154 359 517 576 584 584 584 584
Corn Growing Degree Days
50 M 0 1 8 75 228 387 510 455 275 122 12 0 2073
50 S 0 1 8 83 311 698 1208 1663 1938 2060 2072 2073 2073
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