BOZEMAN 6 W EXP FARM, MONTANA

Period of Record General Climate Summary - Growing Degree Days

Station:(241047) BOZEMAN 6 W EXP FARM
From Year=1966 To Year=2006
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 5 10 43 149 356 555 790 765 470 204 35 8 3390
40 S 5 15 58 207 563 1118 1908 2673 3143 3347 3382 3390 3390
45 M 1 2 13 72 223 407 635 610 330 108 11 1 2413
45 S 1 2 15 88 310 717 1352 1963 2293 2401 2412 2413 2413
50 M 0 0 3 29 118 266 480 456 205 45 3 0 1604
50 S 0 0 3 32 149 415 896 1352 1557 1602 1604 1604 1604
55 M 0 0 0 8 49 148 328 305 106 12 0 0 957
55 S 0 0 0 8 57 205 533 839 945 957 957 957 957
60 M 0 0 0 1 13 65 187 168 41 2 0 0 477
60 S 0 0 0 1 14 79 265 434 475 477 477 477 477
Corn Growing Degree Days
50 M 3 7 37 118 237 349 503 493 322 158 27 4 2256
50 S 3 9 46 164 400 750 1253 1746 2068 2225 2252 2256 2256
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 Jul 28, 2006
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