HERMAN, MICHIGAN

Period of Record General Climate Summary - Growing Degree Days

Station:(203744) HERMAN
From Year=1968 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 2 17 101 363 594 758 698 432 170 21 1 3158
40 S 0 2 19 120 483 1077 1836 2534 2966 3136 3157 3158 3158
45 M 0 0 7 53 240 446 603 543 296 91 7 0 2287
45 S 0 0 7 60 300 746 1349 1893 2189 2280 2287 2287 2287
50 M 0 0 2 26 145 308 449 391 182 43 2 0 1547
50 S 0 0 2 28 173 481 930 1320 1502 1545 1547 1547 1547
55 M 0 0 1 12 79 188 301 249 97 17 0 0 944
55 S 0 0 1 12 91 279 580 829 926 944 944 944 944
60 M 0 0 0 5 37 97 172 132 43 6 0 0 491
60 S 0 0 0 5 42 139 311 443 486 491 491 491 491
Corn Growing Degree Days
50 M 0 1 13 80 243 373 482 435 252 99 11 0 1990
50 S 0 1 14 95 337 710 1192 1628 1879 1979 1990 1990 1990
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