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Period of Record General Climate Summary - Growing Degree Days

Station:(213290) GRAND MEADOW
From Year=1893 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 1 33 194 516 788 957 885 600 289 45 2 4310
40 S 0 1 34 228 744 1532 2489 3375 3975 4264 4309 4310 4310
45 M 0 0 14 110 371 638 802 730 454 180 18 0 3318
45 S 0 0 14 124 495 1133 1935 2666 3120 3299 3317 3318 3318
50 M 0 0 5 56 242 489 647 575 318 98 5 0 2436
50 S 0 0 5 61 303 793 1439 2015 2333 2431 2436 2436 2436
55 M 0 0 2 25 140 345 492 422 198 45 1 0 1669
55 S 0 0 2 27 167 511 1003 1425 1623 1668 1669 1669 1669
60 M 0 0 0 9 68 214 339 274 108 16 0 0 1029
60 S 0 0 0 9 78 292 631 905 1013 1029 1029 1029 1029
Corn Growing Degree Days
50 M 0 1 22 124 306 496 630 572 365 175 29 1 2721
50 S 0 1 23 147 453 949 1579 2151 2516 2691 2720 2721 2721
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