Upperco, Maryland
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 23° 40° -13° (1994) 67° (1998) 3.15" NA
February 25° 44° -8° (1996) 76° (1985) 2.37" NA
March 32° 54° 5° (1996) 87° (1998) 3.56" NA
April 41° 65° 16° (1982) 91° (1990) 3.29" NA
May 51° 75° 28° (1983) 94° (1996) 4.57" NA
June 60° 83° 39° (1990) 99° (1997) 3.56" NA
July 64° 87° 40° (1988) 103° (1988) 3.71" NA
August 63° 85° 43° (1982) 101° (1988) 3.64" NA
September 56° 78° 31° (1990) 96° (1983) 4.02" NA
October 45° 67° 24° (1988) 91° (1986) 3.66" NA
November 36° 55° 14° (1996) 80° (1982) 3.24" NA
December 28° 45° -5° (1983) 75° (1998) 3.21" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 46° 70° 35° (1995) 82° (1985) 0.13" NA
May 2 47° 71° 35° (1995) 85° (1992) 0.14" NA
May 3 47° 71° 35° (1986) 86° (1992) 0.14" NA
May 4 47° 71° 35° (1986) 78° (1983) 0.14" NA
May 5 48° 72° 34° (1997) 85° (1980) 0.14" NA
May 6 48° 72° 39° (1992) 90° (1986) 0.14" NA
May 7 48° 72° 34° (1989) 88° (1986) 0.15" NA
May 8 49° 73° 32° (1989) 85° (1986) 0.15" NA
May 9 49° 73° 34° (1989) 83° (1990) 0.15" NA
May 10 49° 73° 28° (1983) 86° (1993) 0.15" NA
May 11 50° 74° 39° (1989) 89° (1993) 0.15" NA
May 12 50° 74° 39° (1989) 88° (1993) 0.15" NA
May 13 50° 74° 31° (1996) 88° (1991) 0.15" NA
May 14 51° 74° 35° (1996) 87° (1988) 0.15" NA
May 15 51° 75° 41° (1997) 87° (1991) 0.15" NA
May 16 51° 75° 38° (1989) 89° (1998) 0.15" NA
May 17 52° 75° 34° (1983) 90° (1998) 0.16" NA
May 18 52° 76° 41° (1983) 90° (1986) 0.16" NA
May 19 52° 76° 43° (1981) 92° (1996) 0.15" NA
May 20 52° 76° 43° (1992) 94° (1996) 0.15" NA
May 21 53° 77° 39° (1997) 90° (1996) 0.15" NA
May 22 53° 77° 41° (1997) 91° (1996) 0.15" NA
May 23 53° 77° 44° (1990) 89° (1988) 0.15" NA
May 24 54° 77° 45° (1997) 89° (1991) 0.15" NA
May 25 54° 78° 39° (1988) 92° (1991) 0.15" NA
May 26 54° 78° 39° (1988) 92° (1991) 0.15" NA
May 27 55° 78° 42° (1996) 91° (1991) 0.15" NA
May 28 55° 79° 41° (1989) 90° (1991) 0.15" NA
May 29 55° 79° 44° (1997) 92° (1991) 0.14" NA
May 30 56° 79° 41° (1996) 94° (1991) 0.14" NA
May 31 56° 79° 41° (1984) 94° (1991) 0.14" NA
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