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
Dec 1 34° 52° 12° (1976) 74° (1991) 0.11" NA
Dec 2 33° 51° 6° (1967) 71° (1970) 0.11" NA
Dec 3 33° 51° 12° (1976) 70° (1950) 0.11" NA
Dec 4 33° 51° 11° (1966) 67° (1982) 0.11" NA
Dec 5 33° 50° 17° (1966) 75° (1982) 0.11" NA
Dec 6 32° 50° 12° (1957) 71° (1982) 0.11" NA
Dec 7 32° 50° 16° (1977) 71° (1956) 0.1" NA
Dec 8 32° 49° 16° (1964) 71° (1966) 0.1" NA
Dec 9 32° 49° 16° (1960) 73° (1980) 0.1" NA
Dec 10 31° 49° 13° (1960) 71° (1966) 0.1" NA
Dec 11 31° 48° 8° (1958) 66° (1971) 0.1" NA
Dec 12 31° 48° 10° (1988) 65° (1971) 0.1" NA
Dec 13 31° 48° 8° (1960) 69° (1948) 0.1" NA
Dec 14 30° 47° 6° (1960) 69° (1984) 0.1" NA
Dec 15 30° 47° 8° (1960) 70° (1971) 0.1" NA
Dec 16 30° 47° 6° (1958) 72° (1971) 0.1" NA
Dec 17 30° 46° 3° (1951) 66° (1971) 0.1" NA
Dec 18 29° 46° 6° (1960) 70° (1984) 0.1" NA
Dec 19 29° 46° 6° (1960) 71° (1984) 0.1" NA
Dec 20 29° 46° 5° (1960) 64° (1956) 0.1" NA
Dec 21 29° 45° 11° (1981) 63° (1956) 0.11" NA
Dec 22 28° 45° 4° (1989) 65° (1949) 0.11" NA
Dec 23 28° 45° -3° (1960) 66° (1984) 0.11" NA
Dec 24 28° 45° 8° (1989) 69° (1990) 0.11" NA
Dec 25 28° 44° 3° (1983) 70° (1964) 0.11" NA
Dec 26 28° 44° 2° (1983) 70° (1964) 0.11" NA
Dec 27 28° 44° 5° (1948) 70° (1971) 0.11" NA
Dec 28 27° 44° 9° (1955) 69° (1971) 0.11" NA
Dec 29 27° 44° 12° (1963) 71° (1984) 0.11" NA
Dec 30 27° 43° 11° (1976) 77° (1984) 0.11" NA
Dec 31 27° 43° 2° (1963) 68° (1965) 0.11" NA
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