RIVER FALLS, WISCONSIN

Period of Record General Climate Summary - Growing Degree Days

Station:(477226) RIVER FALLS
From Year=1918 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 36 204 535 796 973 904 606 299 44 2 4401
40 S 0 1 37 242 777 1573 2546 3450 4056 4355 4399 4401 4401
45 M 0 0 16 119 389 646 818 749 460 186 18 1 3401
45 S 0 0 17 135 524 1170 1988 2737 3197 3383 3401 3401 3401
50 M 0 0 7 62 257 497 663 594 321 103 6 0 2509
50 S 0 0 7 69 326 823 1486 2080 2401 2503 2509 2509 2509
55 M 0 0 3 28 151 353 508 440 201 48 1 0 1733
55 S 0 0 3 31 181 534 1042 1482 1683 1731 1733 1733 1733
60 M 0 0 1 11 77 221 355 291 111 19 0 0 1086
60 S 0 0 1 11 88 310 665 956 1067 1086 1086 1086 1086
Corn Growing Degree Days
50 M 0 1 23 132 327 508 645 592 368 175 24 1 2796
50 S 0 1 24 156 483 991 1636 2227 2596 2771 2795 2796 2796
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