ROCHESTER INTL AP, MINNESOTA

Period of Record General Climate Summary - Heating Degree Days

Station:(217004) ROCHESTER WSO AP
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 1611 1337 1084 603 280 67 14 37 198 519 963 1421 8134
60 1456 1195 930 460 167 23 2 9 107 377 813 1266 6806
57 1363 1111 838 379 113 10 0 3 67 300 724 1173 6082
55 1301 1054 777 328 84 6 0 1 47 252 665 1111 5626
50 1146 913 626 211 33 1 0 0 16 150 520 957 4573
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