GRASMERE, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(103809) GRASMERE
From Year=1953 To Year=1974
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 17 40 128 383 603 903 853 537 270 48 7 3796
40 S 7 24 64 191 574 1177 2080 2933 3470 3740 3789 3796 3796
45 M 0 2 11 57 246 454 748 698 395 159 12 1 2783
45 S 0 2 13 71 317 771 1519 2217 2612 2771 2782 2783 2783
50 M 0 0 2 17 137 313 594 544 264 74 1 0 1945
50 S 0 0 2 19 156 468 1062 1606 1869 1944 1945 1945 1945
55 M 0 0 0 2 61 193 440 395 153 24 0 0 1269
55 S 0 0 0 2 64 257 697 1092 1244 1269 1269 1269 1269
60 M 0 0 0 0 21 102 292 255 69 4 0 0 743
60 S 0 0 0 0 21 123 415 670 739 743 743 743 743
Corn Growing Degree Days
50 M 5 16 41 125 278 392 581 549 384 226 48 7 2653
50 S 5 21 62 187 465 857 1439 1988 2372 2598 2645 2653 2653
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