RED FEATHER LAKES, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(056921) RED FEATHER LAKES
From Year=1991 To Year=1997
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 3 2 22 57 208 430 622 626 373 157 14 4 2516
40 S 3 4 26 83 290 720 1342 1968 2341 2498 2512 2516 2516
45 M 0 0 4 20 105 289 468 472 243 79 1 0 1682
45 S 0 0 4 24 129 418 886 1358 1601 1681 1682 1682 1682
50 M 0 0 0 5 39 165 318 321 131 32 0 0 1012
50 S 0 0 0 5 44 209 527 848 980 1012 1012 1012 1012
55 M 0 0 0 0 9 74 179 177 55 7 0 0 501
55 S 0 0 0 0 9 83 262 439 494 501 501 501 501
60 M 0 0 0 0 1 19 74 66 16 1 0 0 176
60 S 0 0 0 0 1 20 94 160 176 176 176 176 176
Corn Growing Degree Days
50 M 1 3 19 43 138 261 378 378 232 112 10 2 1577
50 S 1 4 23 66 204 464 843 1221 1453 1566 1575 1577 1577
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