TOMAHAWK SPIRIT RESE, WISCONSIN

Period of Record General Climate Summary - Growing Degree Days

Station:(478528) TOMAHAWK SPIRIT RESERVO
From Year=1902 To Year=1977
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 0 15 145 450 705 856 783 502 246 32 2 3737
40 S 0 0 16 160 611 1315 2172 2955 3458 3703 3736 3737 3737
45 M 0 0 5 77 309 555 701 628 359 144 12 0 2792
45 S 0 0 5 83 392 947 1648 2276 2635 2779 2791 2792 2792
50 M 0 0 2 38 191 407 546 474 231 72 4 0 1964
50 S 0 0 2 39 230 637 1184 1658 1889 1961 1964 1964 1964
55 M 0 0 0 16 103 268 392 324 130 28 1 0 1263
55 S 0 0 0 17 120 388 780 1104 1234 1262 1263 1263 1263
60 M 0 0 0 6 47 151 246 190 62 8 0 0 710
60 S 0 0 0 6 52 203 450 640 701 710 710 710 710
Corn Growing Degree Days
50 M 0 0 13 105 291 445 553 498 303 148 18 1 2375
50 S 0 0 13 118 408 853 1406 1904 2208 2356 2374 2375 2375
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