SILVER CITY 5 W, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(108412) SILVER CITY 5 W
From Year=1978 To Year=2010
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 39 119 349 548 883 863 562 262 41 3 3683
40 S 4 16 54 174 522 1070 1952 2815 3377 3639 3679 3683 3683
45 M 0 3 11 59 225 405 728 708 420 156 13 0 2728
45 S 0 3 14 73 298 703 1431 2138 2559 2715 2728 2728 2728
50 M 0 0 2 23 129 275 573 555 291 81 3 0 1931
50 S 0 0 2 25 155 429 1002 1557 1848 1928 1931 1931 1931
55 M 0 0 0 7 64 167 423 405 179 33 0 0 1278
55 S 0 0 0 7 71 238 661 1066 1245 1278 1278 1278 1278
60 M 0 0 0 1 23 88 282 263 93 10 0 0 762
60 S 0 0 0 1 24 112 395 658 751 762 762 762 762
Corn Growing Degree Days
50 M 2 6 20 70 194 329 580 562 348 148 18 0 2276
50 S 2 8 27 97 291 620 1200 1761 2109 2258 2276 2276 2276
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