COTTONWOOD 2 WSW, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(102159) COTTONWOOD 2 WSW
From Year=1950 To Year=2011
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 5 17 63 175 361 556 835 841 572 262 43 6 3735
40 S 5 22 85 259 620 1176 2011 2853 3424 3686 3729 3735 3735
45 M 0 3 20 90 228 408 680 686 425 148 14 1 2703
45 S 0 3 23 113 341 749 1429 2115 2540 2688 2702 2703 2703
50 M 0 0 4 39 125 269 525 532 290 71 3 0 1859
50 S 0 0 4 43 168 438 963 1494 1785 1856 1859 1859 1859
55 M 0 0 0 13 60 153 375 381 176 28 0 0 1185
55 S 0 0 0 13 73 225 600 981 1157 1185 1185 1185 1185
60 M 0 0 0 3 24 72 238 241 91 9 0 0 678
60 S 0 0 0 3 27 99 337 578 669 678 678 678 678
Corn Growing Degree Days
50 M 1 6 32 94 195 315 530 533 336 135 16 1 2194
50 S 1 6 38 133 328 643 1173 1706 2042 2177 2193 2194 2194
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