IRON MTN KINGSFORD WWTP, MICHIGAN

Period of Record General Climate Summary - Growing Degree Days

Station:(204090) IRON MTN-KINGSFORD WWTP
From Year=1899 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 17 134 423 695 858 785 516 233 30 1 3693
40 S 0 1 18 152 575 1270 2128 2913 3428 3661 3692 3693 3693
45 M 0 0 6 71 287 545 703 630 372 134 10 0 2758
45 S 0 0 7 77 364 909 1612 2242 2614 2748 2758 2758 2758
50 M 0 0 2 34 174 398 548 476 243 66 2 0 1944
50 S 0 0 2 36 211 608 1157 1633 1876 1942 1944 1944 1944
55 M 0 0 1 14 93 261 395 326 139 27 0 0 1256
55 S 0 0 1 15 108 369 764 1090 1229 1256 1256 1256 1256
60 M 0 0 0 5 42 148 250 192 67 8 0 0 712
60 S 0 0 0 5 47 195 445 637 704 712 712 712 712
Corn Growing Degree Days
50 M 0 1 15 102 271 436 556 499 310 139 17 1 2347
50 S 0 1 16 118 389 825 1381 1880 2190 2329 2346 2347 2347
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