Adelphi, Maryland
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 25° 42° -9° (1961) 79° (1950) 3.46" 6"
February 28° 46° -5° (1979) 82° (1985) 2.84" 6.2"
March 35° 55° -1° (1960) 92° (1990) 3.79" 2"
April 44° 66° 18° (1969) 96° (1985) 3.18" 0"
May 54° 75° 30° (1966) 100° (1991) 4.58" 0"
June 64° 84° 40° (1977) 102° (1959) 3.76" 0"
July 69° 89° 48° (1952) 104° (1988) 4.43" 0"
August 67° 87° 43° (1982) 104° (1988) 4.05" 0"
September 60° 80° 33° (1956) 102° (1953) 4.12" 0"
October 47° 69° 23° (1952) 94° (1951) 3.43" 0"
November 38° 57° 14° (1976) 86° (1950) 3.3" 1"
December 30° 47° -3° (1960) 77° (1984) 3.27" 2.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 49° 71° 35° (1971) 88° (1974) 0.13" NA
May 2 49° 71° 31° (1960) 90° (1954) 0.13" NA
May 3 50° 72° 33° (1963) 92° (1965) 0.13" NA
May 4 50° 72° 31° (1957) 90° (1965) 0.14" NA
May 5 50° 72° 33° (1954) 91° (1965) 0.14" NA
May 6 51° 73° 39° (1979) 92° (1949) 0.14" NA
May 7 51° 73° 35° (1968) 93° (1986) 0.14" NA
May 8 51° 73° 32° (1974) 91° (1959) 0.15" NA
May 9 52° 73° 33° (1950) 96° (1963) 0.15" NA
May 10 52° 74° 33° (1962) 95° (1963) 0.15" NA
May 11 52° 74° 30° (1966) 91° (1965) 0.15" NA
May 12 53° 74° 37° (1949) 92° (1959) 0.15" NA
May 13 53° 75° 34° (1963) 93° (1956) 0.15" NA
May 14 53° 75° 38° (1951) 95° (1956) 0.15" NA
May 15 54° 75° 39° (1951) 96° (1962) 0.15" NA
May 16 54° 75° 38° (1973) 91° (1962) 0.16" NA
May 17 54° 76° 31° (1956) 93° (1974) 0.16" NA
May 18 55° 76° 35° (1955) 96° (1962) 0.16" NA
May 19 55° 76° 39° (1956) 97° (1962) 0.16" NA
May 20 56° 77° 39° (1968) 95° (1962) 0.16" NA
May 21 56° 77° 36° (1950) 93° (1975) 0.15" NA
May 22 56° 77° 43° (1954) 93° (1975) 0.15" NA
May 23 57° 78° 39° (1954) 94° (1964) 0.15" NA
May 24 57° 78° 37° (1963) 94° (1992) 0.15" NA
May 25 57° 78° 33° (1956) 92° (1964) 0.15" NA
May 26 58° 78° 38° (1956) 95° (1991) 0.15" NA
May 27 58° 79° 41° (1958) 93° (1965) 0.15" NA
May 28 58° 79° 40° (1961) 93° (1991) 0.15" NA
May 29 58° 79° 43° (1956) 97° (1969) 0.15" NA
May 30 59° 80° 39° (1949) 97° (1969) 0.14" NA
May 31 59° 80° 40° (1961) 100° (1991) 0.14" NA
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