BROWNING, MONTANA

Period of Record General Climate Summary - Growing Degree Days

Station:(241202) BROWNING
From Year=1894 To Year=1989
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 6 7 17 95 271 449 679 626 359 178 33 8 2727
40 S 6 12 29 124 395 844 1523 2149 2508 2686 2719 2727 2727
45 M 1 1 4 40 152 303 525 471 232 92 11 1 1835
45 S 1 2 7 47 200 503 1027 1499 1730 1823 1833 1835 1835
50 M 0 0 1 13 69 175 372 321 128 39 3 0 1119
50 S 0 0 1 14 83 257 629 950 1077 1116 1119 1119 1119
55 M 0 0 0 3 25 82 226 184 56 12 0 0 588
55 S 0 0 0 3 27 109 335 519 576 588 588 588 588
60 M 0 0 0 0 6 30 108 80 18 2 0 0 243
60 S 0 0 0 0 6 36 144 223 241 243 243 243 243
Corn Growing Degree Days
50 M 2 3 12 73 180 275 437 408 244 123 18 3 1777
50 S 2 4 16 89 269 544 981 1389 1633 1756 1774 1777 1777
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