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Period of Record General Climate Summary - Cooling Degree Days

Station:(191386) CHATHAM WSMO
From Year=1972 To Year=2012
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 0 0 1 2 42 223 422 425 250 60 4 0 1429
57 0 0 0 1 23 169 360 363 193 35 1 0 1147
60 0 0 0 0 8 100 268 271 117 13 0 0 777
65 0 0 0 0 1 26 124 125 32 1 0 0 309
70 0 0 0 0 0 3 31 30 4 0 0 0 68
Cooling 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.
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