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Period of Record General Climate Summary - Heating Degree Days

Station:(137664) SIBLEY 5 NNE
From Year=1893 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 1585 1325 1061 580 263 62 13 29 182 493 965 1412 7970
60 1430 1184 906 439 155 22 2 7 97 353 815 1257 6667
57 1337 1099 814 360 106 10 0 2 61 277 726 1164 5956
55 1275 1042 753 310 79 6 0 1 43 232 666 1102 5509
50 1120 901 604 199 33 1 0 0 16 137 521 947 4479
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