NAMPA SUGAR FACTORY, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(106305) NAMPA SUGAR FACTORY
From Year=1976 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 9 33 150 313 563 804 1061 1006 687 353 75 15 5067
40 S 9 42 192 505 1068 1872 2932 3938 4625 4978 5052 5067 5067
45 M 1 8 61 187 409 654 906 851 537 215 25 4 3857
45 S 1 9 70 257 666 1320 2226 3076 3614 3829 3854 3857 3857
50 M 0 1 18 94 269 504 751 696 390 109 6 0 2836
50 S 0 1 18 112 381 885 1635 2331 2721 2830 2836 2836 2836
55 M 0 0 3 39 155 358 596 541 254 44 1 0 1991
55 S 0 0 3 42 197 555 1150 1691 1945 1990 1991 1991 1991
60 M 0 0 0 12 77 226 442 389 141 14 0 0 1301
60 S 0 0 0 12 88 315 757 1145 1286 1301 1301 1301 1301
Corn Growing Degree Days
50 M 3 22 111 216 355 500 650 618 446 255 51 7 3235
50 S 3 26 136 353 707 1207 1857 2475 2921 3177 3228 3235 3235
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