TWIN LAKES RSVR, COLORADO

Period of Record General Climate Summary - Heating Degree Days

Station:(058501) TWIN LAKES RESERVOIR
From Year=1949 To Year=2012
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 1424 1299 1212 976 687 394 224 275 475 801 1103 1388 10259
60 1269 1158 1057 826 532 247 88 129 325 646 953 1233 8464
57 1176 1073 964 736 440 166 36 63 238 553 863 1140 7447
55 1114 1017 902 676 378 120 17 33 182 491 803 1078 6812
50 959 876 747 526 232 45 2 3 75 338 653 923 5379
Heating Degree Day units are computed as the difference between the base temperature and the daily average temperature. (Base Temp. - Daily Ave. Temp.) One unit is accumulated for each degree Fahrenheit the average temperature is below the base temperature. Negative numbers are discarded. Example: If the days high temperature was 65 and the low temperature was 31, the base 50 heating degree day units is 50 - ((65 + 31) / 2) = 2. This is done for each day of the month and summed.
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