LONGMONT 2 ESE, COLORADO

Period of Record General Climate Summary - Growing Degree Days

Station:(055116) LONGMONT 2 ESE
From Year=1893 To Year=2004
Growing Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
40 M 15 28 98 256 519 775 979 924 631 325 78 20 4648
40 S 15 43 140 396 915 1691 2670 3594 4225 4550 4628 4648 4648
45 M 3 8 41 149 373 626 824 769 485 200 29 5 3513
45 S 3 11 53 202 575 1200 2024 2793 3279 3478 3508 3513 3513
50 M 0 1 12 71 240 478 669 614 345 99 8 1 2538
50 S 0 2 14 85 325 803 1472 2086 2430 2530 2538 2538 2538
55 M 0 0 2 23 129 334 514 459 217 35 1 0 1716
55 S 0 0 3 26 155 489 1003 1463 1680 1715 1716 1716 1716
60 M 0 0 0 4 52 202 361 307 110 7 0 0 1043
60 S 0 0 0 4 56 258 619 926 1036 1043 1043 1043 1043
Corn Growing Degree Days
50 M 35 51 113 207 337 478 607 577 419 271 102 42 3239
50 S 35 86 199 405 742 1220 1828 2405 2824 3095 3197 3239 3239
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