SUN VALLEY, IDAHO

Period of Record General Climate Summary - Growing Degree Days

Station:(108906) SUN VALLEY
From Year=1948 To Year=1972
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 0 1 40 221 387 633 598 341 117 4 0 2342
40 S 0 0 1 41 262 650 1282 1880 2221 2338 2342 2342 2342
45 M 0 0 0 9 106 244 478 443 208 41 0 0 1530
45 S 0 0 0 9 115 359 837 1281 1489 1529 1530 1530 1530
50 M 0 0 0 1 35 122 324 294 99 7 0 0 882
50 S 0 0 0 1 36 157 482 776 875 882 882 882 882
55 M 0 0 0 0 6 41 179 157 32 0 0 0 416
55 S 0 0 0 0 6 47 227 384 415 416 416 416 416
60 M 0 0 0 0 0 8 67 56 6 0 0 0 137
60 S 0 0 0 0 0 8 75 132 137 137 137 137 137
Corn Growing Degree Days
50 M 0 0 4 68 220 319 494 481 335 178 22 0 2122
50 S 0 0 5 72 292 611 1105 1586 1922 2100 2121 2122 2122
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