WALHALLA 1 SW, NORTH DAKOTA

Period of Record General Climate Summary - Growing Degree Days

Station:(329155) WALHALLA
From Year=1904 To Year=1998
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 10 141 410 692 884 781 527 219 25 0 3688
40 S 0 0 10 151 560 1252 2136 2917 3444 3663 3688 3688 3688
45 M 0 0 3 77 273 542 729 626 384 133 8 0 2774
45 S 0 0 3 80 353 895 1623 2249 2633 2766 2774 2774 2774
50 M 0 0 0 39 162 395 574 471 251 69 1 0 1962
50 S 0 0 0 39 201 596 1170 1640 1891 1960 1962 1962 1962
55 M 0 0 0 16 86 259 420 319 140 30 0 0 1269
55 S 0 0 0 16 102 361 781 1100 1239 1269 1269 1269 1269
60 M 0 0 0 4 41 150 271 183 62 12 0 0 722
60 S 0 0 0 4 44 194 465 648 710 722 722 722 722
Corn Growing Degree Days
50 M 0 0 8 110 278 431 566 496 340 153 22 0 2403
50 S 0 0 8 118 395 827 1393 1889 2229 2382 2403 2403 2403
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