ROCK MILLS, ALABAMA

Period of Record General Climate Summary - Heating Degree Days

From Year=1938 To Year=2012
Station:(017025) ROCK MILLS
Averages Daily Extremes
Heating Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
65 673 535 373 143 30 2 0 0 11 148 398 630 2943
60 522 400 245 67 8 1 0 0 3 67 265 481 2058
57 436 324 180 38 2 0 0 0 1 38 195 396 1611
55 380 277 142 25 1 0 0 0 0 25 153 342 1346
50 254 173 70 6 0 0 0 0 0 6 75 217 801
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 May 22,
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered

Southeast Regional Climate Center, SERCC Webmaster