FORT HALL INDIAN AGENCY, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(103297) FORT HALL INDIAN AGENCY
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 3 9 51 186 431 656 906 860 561 254 36 4 3957
40 S 3 12 63 249 680 1336 2241 3101 3663 3917 3953 3957 3957
45 M 0 1 14 93 288 506 751 705 415 141 9 0 2923
45 S 0 1 16 108 396 902 1653 2358 2773 2914 2923 2923 2923
50 M 0 0 2 37 166 359 596 550 277 62 1 0 2051
50 S 0 0 2 39 205 565 1161 1711 1988 2050 2051 2051 2051
55 M 0 0 0 11 78 225 441 397 159 19 0 0 1329
55 S 0 0 0 11 88 313 755 1151 1310 1329 1329 1329 1329
60 M 0 0 0 2 25 114 290 249 69 2 0 0 753
60 S 0 0 0 2 28 142 432 681 750 753 753 753 753
Corn Growing Degree Days
50 M 1 8 49 151 289 419 573 550 391 215 36 2 2685
50 S 1 9 58 210 499 918 1490 2040 2432 2647 2683 2685 2685
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