COUNCIL, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(102187) COUNCIL
From Year=1911 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 7 5 54 243 498 709 1013 962 629 312 46 5 4483
40 S 7 12 66 309 808 1517 2529 3491 4120 4432 4478 4483 4483
45 M 7 0 15 131 348 559 858 807 480 181 11 1 3398
45 S 7 7 22 153 501 1060 1918 2724 3205 3386 3397 3398 3398
50 M 6 0 2 56 216 411 703 652 337 85 1 0 2469
50 S 6 6 9 65 280 691 1394 2045 2382 2468 2469 2469 2469
55 M 6 0 0 18 112 271 548 497 209 29 0 0 1692
55 S 6 6 7 25 137 408 956 1453 1662 1691 1692 1692 1692
60 M 6 0 0 4 47 154 395 347 107 7 0 0 1068
60 S 6 6 6 10 57 211 606 953 1060 1068 1068 1068 1068
Corn Growing Degree Days
50 M 1 4 42 172 329 445 625 594 418 231 35 2 2897
50 S 1 5 46 218 547 992 1617 2211 2630 2860 2896 2897 2897
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