BRECKENRIDGE, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(050909) BRECKENRIDGE
From Year=1948 To Year=2006
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 0 23 160 -99 550 571 -99 -99 -99 0 -99
40 S 0 0 0 23 183 -99 -99 -99 -99 -99 -99 -99 -99
45 M 0 0 0 1 76 -99 395 416 -99 -99 -99 0 -99
45 S 0 0 0 1 77 -99 -99 -99 -99 -99 -99 -99 -99
50 M 0 0 0 0 29 -99 242 261 -99 -99 -99 0 -99
50 S 0 0 0 0 29 -99 -99 -99 -99 -99 -99 -99 -99
55 M 0 0 0 0 9 -99 100 112 -99 -99 -99 0 -99
55 S 0 0 0 0 9 -99 -99 -99 -99 -99 -99 -99 -99
60 M 0 0 0 0 2 -99 13 11 -99 -99 -99 0 -99
60 S 0 0 0 0 2 -99 -99 -99 -99 -99 -99 -99 -99
Corn Growing Degree Days
50 M 0 0 13 31 152 -99 360 360 -99 -99 -99 0 -99
50 S 0 0 13 43 195 -99 -99 -99 -99 -99 -99 -99 -99
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