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Period of Record General Climate Summary - Growing Degree Days

Station:(219072) WINONA DAM 5 A
From Year=1939 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 1 4 57 267 575 862 1026 968 684 353 68 5 4870
40 S 1 5 62 329 904 1766 2792 3760 4444 4797 4865 4870 4870
45 M 0 1 30 162 423 712 871 813 535 227 29 2 3806
45 S 0 1 31 193 616 1328 2199 3012 3548 3775 3804 3806 3806
50 M 0 0 15 86 281 562 716 658 390 129 10 0 2848
50 S 0 0 15 101 382 944 1660 2319 2709 2838 2847 2848 2848
55 M 0 0 7 39 163 414 561 503 257 61 3 0 2009
55 S 0 0 7 46 208 622 1184 1687 1944 2006 2008 2009 2009
60 M 0 0 2 15 81 274 407 350 148 24 1 0 1302
60 S 0 0 2 18 99 372 779 1129 1277 1301 1302 1302 1302
Corn Growing Degree Days
50 M 1 2 35 154 329 556 693 646 412 190 33 2 3053
50 S 1 3 38 192 521 1077 1769 2415 2827 3017 3050 3053 3053
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