AMERICAN FALLS 1 SW, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(100227) AMERICAN FALLS 1 SW
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 4 11 60 216 465 688 952 916 611 296 50 6 4275
40 S 4 15 76 292 756 1444 2396 3312 3923 4219 4269 4275 4275
45 M 0 2 18 112 318 538 797 761 463 173 15 1 3197
45 S 0 2 19 132 449 987 1784 2545 3008 3181 3196 3197 3197
50 M 0 0 3 47 189 390 642 606 321 82 3 0 2283
50 S 0 0 3 50 239 629 1271 1877 2199 2281 2283 2283 2283
55 M 0 0 0 15 92 251 487 451 194 29 0 0 1520
55 S 0 0 0 15 107 358 845 1297 1491 1519 1520 1520 1520
60 M 0 0 0 3 34 136 334 301 94 6 0 0 908
60 S 0 0 0 3 37 173 507 808 902 908 908 908 908
Corn Growing Degree Days
50 M 1 5 45 150 292 430 607 586 402 209 32 2 2760
50 S 1 6 51 201 493 923 1529 2116 2518 2727 2759 2760 2760
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