STEPHENSON 8 WNW, MICHIGAN

Period of Record General Climate Summary - Growing Degree Days

Station:(207867) STEPHENSON 8 WNW
From Year=1948 To Year=2008
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 16 137 421 685 841 789 514 235 35 2 3677
40 S 0 1 17 154 575 1260 2101 2890 3404 3639 3675 3677 3677
45 M 0 0 5 71 282 535 686 634 368 133 12 1 2727
45 S 0 0 5 76 359 894 1580 2214 2582 2714 2727 2727 2727
50 M 0 0 1 34 167 388 531 479 236 64 3 0 1904
50 S 0 0 1 35 203 590 1122 1600 1836 1900 1904 1904 1904
55 M 0 0 0 14 85 251 378 327 131 26 0 0 1213
55 S 0 0 0 15 100 351 728 1056 1186 1212 1213 1213 1213
60 M 0 0 0 5 36 138 232 190 60 8 0 0 669
60 S 0 0 0 5 41 179 411 601 661 669 669 669 669
Corn Growing Degree Days
50 M 0 1 14 105 275 434 543 504 316 147 20 1 2359
50 S 0 1 15 119 394 828 1371 1875 2191 2338 2358 2359 2359
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