RICHFIELD, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(107673) RICHFIELD
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 0 5 41 177 422 645 919 870 564 255 30 1 3929
40 S 0 5 46 223 645 1290 2209 3079 3643 3898 3928 3929 3929
45 M 0 1 11 88 280 496 764 715 418 142 7 0 2921
45 S 0 1 12 99 380 875 1640 2355 2773 2914 2921 2921 2921
50 M 0 0 1 35 163 350 609 560 281 62 1 0 2063
50 S 0 0 2 37 199 550 1159 1719 2000 2062 2063 2063 2063
55 M 0 0 0 11 79 219 455 407 162 20 0 0 1353
55 S 0 0 0 11 90 308 763 1171 1333 1353 1353 1353 1353
60 M 0 0 0 3 29 115 304 262 75 3 0 0 792
60 S 0 0 0 3 32 147 451 713 788 792 792 792 792
Corn Growing Degree Days
50 M 0 5 41 150 290 414 584 558 388 209 28 1 2667
50 S 0 6 46 196 486 900 1484 2042 2430 2639 2666 2667 2667
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