POTOMAC FILTER PLANT, MARYLAND

Period of Record General Climate Summary - Temperature

From Year=1962 To Year=2011
Station:(187272) POTOMAC FILTER PLANT
Averages Daily Extremes
Monthly Averages Daily Extremes Monthly Extremes Max. Temp. Min. Temp.
Max. Min. Mean High Date Low Date Highest
Mean
Year Lowest
Mean
Year >=
90 F
<=
32 F
<=
32 F
<=
0 F
F F F F dd/yyyy
or
yyyymmdd
F dd/yyyy
or
yyyymmdd
F - F - # Days # Days # Days # Days
January 42.0 27.5 34.7 76 25/1967 4 29/1971 40.4 67 29.0 71 0.0 7.5 22.0 0.0
February -99.0 -99.0 -99.0 **** 99/ - 9999 99/ - ****** *** ***** *** -99.0 -99.0 -99.0 -99.0
March 55.6 32.7 44.1 78 29/1979 20 10/1971 47.2 79 41.1 71 0.0 0.0 15.5 0.0
April 62.1 42.8 52.4 77 25/1979 30 07/1979 52.4 79 52.4 79 0.0 0.0 3.0 0.0
May 74.0 49.2 61.6 86 07/1972 30 07/1968 63.2 72 60.1 68 0.0 0.0 1.5 0.0
June -99.0 -99.0 -99.0 **** 99/ - 9999 99/ - ****** *** ***** *** -99.0 -99.0 -99.0 -99.0
July 87.4 67.5 77.4 96 22/1972 56 05/1972 77.4 72 77.4 72 17.0 0.0 0.0 0.0
August -99.0 -99.0 -99.0 **** 99/ - 9999 99/ - ****** *** ***** *** -99.0 -99.0 -99.0 -99.0
September -99.0 -99.0 -99.0 **** 99/ - 9999 99/ - ****** *** ***** *** -99.0 -99.0 -99.0 -99.0
October -99.0 -99.0 -99.0 84 01/1968 44 01/1968 ****** *** ***** *** -99.0 -99.0 -99.0 -99.0
November -99.0 -99.0 -99.0 **** 99/ - 9999 99/ - ****** *** ***** *** -99.0 -99.0 -99.0 -99.0
December 52.1 37.2 44.6 66 07/1970 16 26/1970 48.0 70 41.3 72 0.0 0.5 11.0 0.0
Annual -99.0 -99.0 -99.0 96 19720722 4 19710129 ****** *** ***** *** -99.0 -99.0 -99.0 -99.0
Winter -99.0 -99.0 -99.0 76 19670125 4 19710129 -99.0 0 -99.0 0 -99.0 -99.0 33.0 -99.0
Spring 63.9 41.6 52.7 86 19720507 20 19710310 -99.0 0 -99.0 0 0.0 0.0 20.0 0.0
Summer -99.0 -99.0 -99.0 96 19720722 56 19720705 -99.0 0 -99.0 0 -99.0 -99.0 0.0 -99.0
Fall -99.0 -99.0 -99.0 84 19681001 44 19681001 -99.0 0 -99.0 0 -99.0 -99.0 0.0 -99.0
Table updated on May 22,
For monthly and annual means, thresholds, and sums:
Months with 5 or more missing days are not considered
Years with 1 or more missing months are not considered
Seasons are climatological not calendar seasons
Winter = Dec., Jan., and Feb. Spring = Mar., Apr., and May
Summer = Jun., Jul., and Aug. Fall = Sep., Oct., and Nov.


Southeast Regional Climate Center, SERCC staff