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Period of Record General Climate Summary - Growing Degree Days

Station:(219046) WINNEBAGO
From Year=1898 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 43 220 558 830 1004 928 636 317 54 2 4595
40 S 0 2 46 266 823 1653 2658 3586 4222 4539 4593 4595 4595
45 M 0 0 20 131 410 680 849 773 489 203 22 0 3579
45 S 0 0 20 151 562 1242 2091 2864 3353 3556 3579 3579 3579
50 M 0 0 8 69 277 531 694 618 349 115 7 0 2669
50 S 0 0 8 77 355 886 1580 2198 2547 2662 2669 2669 2669
55 M 0 0 3 33 168 385 539 464 225 56 2 0 1873
55 S 0 0 3 35 203 587 1127 1590 1815 1871 1873 1873 1873
60 M 0 0 1 12 88 249 386 313 126 22 0 0 1197
60 S 0 0 1 13 101 350 735 1049 1175 1197 1197 1197 1197
Corn Growing Degree Days
50 M 0 2 31 141 331 527 668 605 387 194 35 2 2924
50 S 0 2 33 174 505 1032 1700 2306 2693 2887 2922 2924 2924
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