MANASSAS, VIRGINIA

Period of Record General Climate Summary - Cooling Degree Days

From Year=1895 To Year=1985
Station:(445213) MANASSAS
Averages Daily Extremes
Cooling Degree Days for Selected Base Temperature (F)
Base Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual
55 1 2 19 101 306 522 674 628 417 131 25 3 2829
57 0 1 12 76 252 462 612 566 360 99 16 2 2458
60 0 0 5 47 179 373 519 473 279 61 8 0 1945
65 0 0 1 17 86 233 365 319 161 21 2 0 1205
70 0 0 0 5 29 118 215 179 75 5 0 0 627
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 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