DULUTH INTL AP, MINNESOTA

Period of Record General Climate Summary - Cooling Degree Days

Station:(212248) DULUTH WSO AP
From Year=1948 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 0 6 52 174 334 280 95 14 0 0 954
57 0 0 0 3 35 133 275 225 69 9 0 0 750
60 0 0 0 1 19 83 195 152 40 4 0 0 494
65 0 0 0 0 5 29 89 63 13 1 0 0 200
70 0 0 0 0 1 7 28 18 3 0 0 0 56
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