FT COLLINS 4 E, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(053006) FORT COLLINS 4E
From Year=1994 To Year=2012
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 16 24 124 254 515 787 1030 948 645 303 82 13 4740
40 S 16 40 164 419 933 1720 2750 3698 4343 4645 4727 4740 4740
45 M 3 6 55 144 367 637 875 793 498 180 33 2 3592
45 S 3 9 64 208 575 1211 2086 2879 3376 3557 3589 3592 3592
50 M 0 1 17 64 234 488 720 638 353 87 7 0 2610
50 S 0 1 19 83 317 805 1525 2162 2516 2602 2610 2610 2610
55 M 0 0 3 18 126 343 565 483 221 32 0 0 1790
55 S 0 0 3 21 147 489 1054 1537 1758 1790 1790 1790 1790
60 M 0 0 0 3 51 210 411 330 111 8 0 0 1123
60 S 0 0 0 3 54 264 674 1004 1115 1123 1123 1123 1123
Corn Growing Degree Days
50 M 33 39 128 191 319 482 652 603 408 225 91 28 3200
50 S 33 73 201 392 711 1193 1845 2448 2856 3081 3172 3200 3200
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