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Period of Record General Climate Summary - Growing Degree Days

Station:(214103) ISLE 12 N
From Year=1959 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 0 19 130 430 690 869 797 506 208 22 0 3671
40 S 0 0 19 150 580 1269 2139 2936 3441 3649 3671 3671 3671
45 M 0 0 7 66 292 540 714 642 363 115 7 0 2746
45 S 0 0 7 73 365 905 1620 2262 2624 2739 2746 2746 2746
50 M 0 0 2 29 176 392 559 487 233 56 2 0 1938
50 S 0 0 2 31 207 600 1159 1646 1880 1936 1938 1938 1938
55 M 0 0 1 10 90 253 405 336 133 24 0 0 1253
55 S 0 0 1 11 102 355 760 1096 1229 1253 1253 1253 1253
60 M 0 0 0 3 38 137 258 198 63 7 0 0 704
60 S 0 0 0 3 41 178 436 633 696 704 704 704 704
Corn Growing Degree Days
50 M 0 0 14 91 259 423 561 502 296 118 13 0 2279
50 S 0 0 14 105 364 787 1349 1851 2147 2266 2279 2279 2279
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