Harpers Ferry, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 26° -43° (1951) 57° (2002) 1.05" 7.9"
February 15° 32° -34° (1996) 63° (1981) 0.97" 7.2"
March 27° 44° -34° (1962) 82° (1986) 1.93" 6.1"
April 39° 58° 11° (1972) 93° (1980) 3.58" 1.2"
May 51° 71° 27° (1989) 92° (2006) 3.8" 0"
June 60° 80° 40° (1972) 100° (1988) 4.29" 0"
July 65° 84° 46° (1971) 101° (1980) 4.01" 0"
August 63° 81° 44° (1986) 101° (1988) 4.37" 0"
September 54° 73° 29° (1984) 96° (1955) 3" 0"
October 43° 61° 18° (1988) 92° (1997) 2.22" 0"
November 29° 44° -8° (1977) 75° (2000) 2.36" 2.3"
December 16° 30° -29° (2000) 66° (2001) 1.24" 9.2"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Mar 1 21° 37° -34° (1962) 60° (1992) 0.04" NA
Mar 2 21° 37° -21° (1962) 64° (1964) 0.04" NA
Mar 3 21° 38° -1° (1996) 61° (1983) 0.04" NA
Mar 4 22° 38° -13° (1978) 69° (1983) 0.04" NA
Mar 5 22° 39° -11° (1978) 68° (2000) 0.04" NA
Mar 6 23° 39° -10° (1962) 70° (2000) 0.05" NA
Mar 7 23° 40° -9° (1960) 76° (2000) 0.05" NA
Mar 8 24° 40° -4° (1996) 76° (2000) 0.05" NA
Mar 9 24° 40° -5° (1975) 63° (2000) 0.05" NA
Mar 10 25° 41° -1° (2003) 66° (1977) 0.05" NA
Mar 11 25° 41° 2° (1979) 65° (2006) 0.05" NA
Mar 12 25° 42° -2° (1960) 73° (1990) 0.05" NA
Mar 13 26° 42° -3° (1975) 67° (1957) 0.05" NA
Mar 14 26° 43° -5° (1960) 67° (1990) 0.06" NA
Mar 15 27° 43° -1° (1956) 66° (2003) 0.06" NA
Mar 16 27° 43° 2° (1956) 70° (2003) 0.06" NA
Mar 17 27° 44° -8° (1959) 74° (1966) 0.06" NA
Mar 18 28° 44° 0° (1959) 66° (2003) 0.06" NA
Mar 19 28° 45° 2° (1965) 72° (1976) 0.07" NA
Mar 20 29° 45° -3° (1965) 66° (1976) 0.07" NA
Mar 21 29° 46° -1° (1965) 73° (1953) 0.07" NA
Mar 22 30° 46° 8° (1959) 69° (1994) 0.07" NA
Mar 23 30° 47° 2° (1974) 69° (1963) 0.07" NA
Mar 24 30° 47° -3° (1974) 71° (1963) 0.08" NA
Mar 25 31° 48° 8° (1960) 79° (2007) 0.08" NA
Mar 26 31° 48° 4° (1955) 79° (2007) 0.08" NA
Mar 27 32° 49° 7° (1964) 78° (1991) 0.08" NA
Mar 28 32° 49° 11° (1970) 76° (1986) 0.09" NA
Mar 29 32° 50° 3° (1969) 82° (1986) 0.09" NA
Mar 30 33° 50° 4° (1969) 79° (1967) 0.09" NA
Mar 31 33° 51° 9° (1969) 80° (1986) 0.09" NA
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