RAND, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(056820) RAND
From Year=1988 To Year=1998
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 3 34 163 368 497 489 289 77 3 0 1923
40 S 0 0 3 37 200 568 1064 1553 1843 1920 1923 1923 1923
45 M 0 0 0 10 62 224 342 335 158 22 0 0 1153
45 S 0 0 0 10 72 295 638 972 1131 1153 1153 1153 1153
50 M 0 0 0 1 11 103 192 183 59 2 0 0 551
50 S 0 0 0 1 13 116 307 490 549 551 551 551 551
55 M 0 0 0 0 1 27 65 56 12 0 0 0 161
55 S 0 0 0 0 1 28 93 149 161 161 161 161 161
60 M 0 0 0 0 0 3 7 5 1 0 0 0 17
60 S 0 0 0 0 0 3 10 16 17 17 17 17 17
Corn Growing Degree Days
50 M 0 0 6 44 157 286 364 357 241 103 9 0 1567
50 S 0 0 6 50 206 493 857 1213 1454 1557 1567 1567 1567
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