BLACKFOOT 2 SSW, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(100915) BLACKFOOT 2 SSW
From Year=1948 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 2 7 53 201 457 671 926 871 573 261 36 3 4061
40 S 2 10 62 263 720 1391 2317 3188 3761 4022 4058 4061 4061
45 M 0 1 16 102 310 521 771 716 426 145 8 0 3014
45 S 0 1 17 118 428 949 1720 2436 2862 3007 3014 3014 3014
50 M 0 0 3 41 182 373 616 561 286 63 1 0 2128
50 S 0 0 3 45 227 601 1217 1778 2064 2127 2128 2128 2128
55 M 0 0 1 12 86 236 461 407 164 19 0 0 1386
55 S 0 0 1 12 99 335 796 1203 1367 1386 1386 1386 1386
60 M 0 0 0 2 29 123 309 258 73 3 0 0 796
60 S 0 0 0 2 31 154 463 721 794 796 796 796 796
Corn Growing Degree Days
50 M 1 6 47 156 304 429 588 559 392 207 33 2 2723
50 S 1 7 53 210 514 942 1531 2090 2482 2689 2722 2723 2723
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