TRACY, MINNESOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(218323) TRACY
From Year=1912 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 43 225 570 841 1028 951 651 326 53 3 4695
40 S 1 4 47 272 842 1683 2711 3662 4312 4639 4692 4695 4695
45 M 0 1 19 136 423 691 873 796 504 212 23 1 3678
45 S 0 1 20 156 579 1270 2143 2939 3443 3655 3678 3678 3678
50 M 0 0 8 73 290 542 718 641 364 124 7 0 2767
50 S 0 0 8 81 371 913 1631 2272 2636 2760 2767 2767 2767
55 M 0 0 2 35 179 396 563 486 238 61 2 0 1963
55 S 0 0 2 37 216 612 1175 1662 1900 1961 1963 1963 1963
60 M 0 0 1 14 96 260 409 336 137 25 0 0 1278
60 S 0 0 1 15 111 371 780 1116 1253 1278 1278 1278 1278
Corn Growing Degree Days
50 M 1 3 30 142 341 535 683 621 400 198 35 2 2992
50 S 1 4 34 176 517 1052 1735 2357 2756 2955 2989 2992 2992
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