AMES, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(050228) AMES
From Year=1914 To Year=1986
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 4 43 200 423 612 556 339 127 16 0 2319
40 S 0 0 4 48 248 671 1283 1838 2177 2304 2319 2319 2319
45 M 0 0 1 8 88 277 457 401 198 43 1 0 1472
45 S 0 0 1 8 96 372 829 1230 1428 1471 1472 1472 1472
50 M 0 0 0 1 18 144 302 246 80 6 0 0 796
50 S 0 0 0 1 19 163 465 711 790 796 796 796 796
55 M 0 0 0 0 1 50 149 100 16 0 0 0 316
55 S 0 0 0 0 1 51 200 300 316 316 316 316 316
60 M 0 0 0 0 0 7 32 15 1 0 0 0 55
60 S 0 0 0 0 0 7 39 54 55 55 55 55 55
Corn Growing Degree Days
50 M 0 4 9 53 171 311 398 354 241 128 22 0 1693
50 S 0 5 14 66 237 549 947 1301 1542 1670 1693 1693 1693
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