RIDGWAY, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(057020) RIDGWAY
From Year=1982 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 3 30 116 328 539 729 685 438 153 18 1 3041
40 S 0 3 33 149 477 1016 1745 2431 2869 3022 3040 3041 3041
45 M 0 0 6 44 196 390 574 530 294 60 4 0 2098
45 S 0 0 6 50 246 636 1211 1741 2035 2095 2098 2098 2098
50 M 0 0 0 10 90 247 419 376 164 15 0 0 1321
50 S 0 0 0 11 101 348 767 1143 1306 1321 1321 1321 1321
55 M 0 0 0 1 27 120 265 224 64 2 0 0 702
55 S 0 0 0 1 28 148 413 636 700 702 702 702 702
60 M 0 0 0 0 6 34 123 86 14 0 0 0 262
60 S 0 0 0 0 6 40 163 249 262 262 262 262 262
Corn Growing Degree Days
50 M 7 11 64 130 277 415 497 471 354 201 51 6 2483
50 S 7 17 82 212 489 904 1400 1871 2225 2426 2476 2483 2483
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