COOK 18 W, MINNESOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(211776) COOK 18 W
From Year=1959 To Year=1995
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 13 108 399 626 797 734 425 168 12 0 3285
40 S 0 0 14 122 521 1147 1945 2679 3104 3272 3284 3285 3285
45 M 0 0 3 53 265 477 642 579 288 88 3 0 2399
45 S 0 0 3 56 322 798 1441 2020 2308 2396 2399 2399 2399
50 M 0 0 0 23 159 331 488 426 172 38 1 0 1637
50 S 0 0 0 23 183 513 1001 1426 1598 1636 1637 1637 1637
55 M 0 0 0 8 84 198 335 279 88 13 0 0 1005
55 S 0 0 0 8 93 290 625 904 992 1005 1005 1005 1005
60 M 0 0 0 2 38 98 194 154 37 3 0 0 525
60 S 0 0 0 2 40 138 332 485 522 525 525 525 525
Corn Growing Degree Days
50 M 0 0 12 94 276 399 511 467 257 109 8 0 2133
50 S 0 0 12 106 382 781 1292 1759 2016 2125 2133 2133 2133
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