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Period of Record General Climate Summary - Heating Degree Days

Station:(219170) WORTHINGTON 2 NNE
From Year=1971 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 1604 1318 1069 615 272 57 12 37 201 551 994 1458 8185
60 1449 1176 914 472 162 18 2 8 109 407 844 1303 6866
57 1356 1092 822 391 112 8 0 2 69 327 755 1210 6143
55 1294 1035 761 340 84 4 0 1 48 276 695 1148 5686
50 1139 894 611 222 35 1 0 0 17 169 551 993 4630
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