BROADUS, MONTANA

Period of Record General Climate Summary - Growing Degree Days

Station:(241127) BROADUS
From Year=1920 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 4 10 57 200 467 723 990 931 569 258 38 6 4252
40 S 4 14 71 271 739 1461 2451 3382 3950 4208 4246 4252 4252
45 M 1 2 21 109 323 573 835 776 426 147 12 1 3223
45 S 1 2 23 132 455 1028 1863 2638 3064 3210 3222 3223 3223
50 M 0 0 6 49 196 425 680 621 291 68 2 0 2339
50 S 0 0 6 55 252 677 1357 1977 2269 2337 2339 2339 2339
55 M 0 0 1 17 101 284 525 467 176 24 0 0 1596
55 S 0 0 1 18 120 404 929 1396 1572 1596 1596 1596 1596
60 M 0 0 0 5 43 164 372 317 89 6 0 0 996
60 S 0 0 0 5 48 212 584 901 990 996 996 996 996
Corn Growing Degree Days
50 M 5 16 65 160 296 444 623 585 378 213 50 9 2843
50 S 5 21 86 246 542 985 1609 2193 2571 2784 2834 2843 2843
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