VAIL, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(058575) VAIL
From Year=1985 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 0 0 5 45 208 412 603 553 309 82 1 0 2218
40 S 0 0 5 50 258 670 1273 1826 2135 2216 2218 2218 2218
45 M 0 0 0 10 99 266 448 399 175 24 0 0 1420
45 S 0 0 0 10 109 375 824 1222 1397 1420 1420 1420 1420
50 M 0 0 0 1 28 136 295 245 69 3 0 0 776
50 S 0 0 0 1 29 164 459 704 773 776 776 776 776
55 M 0 0 0 0 4 41 147 104 16 0 0 0 312
55 S 0 0 0 0 4 45 193 296 312 312 312 312 312
60 M 0 0 0 0 0 5 40 19 2 0 0 0 65
60 S 0 0 0 0 0 5 45 64 65 65 65 65 65
Corn Growing Degree Days
50 M 0 0 14 61 184 333 428 392 260 107 7 0 1786
50 S 0 1 15 76 260 592 1020 1412 1672 1779 1786 1786 1786
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