VAIL, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(058575) VAIL
From Year=1985 To Year=2005
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 4 48 217 413 596 553 313 86 2 0 2231
40 S 0 0 4 53 270 683 1278 1831 2144 2229 2231 2231 2231
45 M 0 0 0 10 105 268 441 398 178 24 0 0 1424
45 S 0 0 0 10 115 382 823 1221 1400 1424 1424 1424 1424
50 M 0 0 0 1 31 136 288 245 73 3 0 0 777
50 S 0 0 0 1 32 168 456 700 773 777 777 777 777
55 M 0 0 0 0 5 41 141 103 17 0 0 0 308
55 S 0 0 0 0 5 46 187 290 308 308 308 308 308
60 M 0 0 0 0 0 5 37 19 2 0 0 0 63
60 S 0 0 0 0 0 5 42 61 63 63 63 63 63
Corn Growing Degree Days
50 M 0 1 13 64 191 335 429 397 266 116 7 0 1818
50 S 0 1 14 78 269 604 1032 1429 1695 1811 1818 1818 1818
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