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
Apr 1 34° 51° 21° (1964) 73° (1986) 0.1" NA
Apr 2 34° 52° 17° (1962) 79° (1981) 0.1" NA
Apr 3 34° 52° 13° (1954) 71° (1956) 0.1" NA
Apr 4 35° 53° 12° (1975) 80° (2005) 0.1" NA
Apr 5 35° 53° 20° (1979) 79° (1991) 0.11" NA
Apr 6 36° 54° 12° (1979) 86° (1991) 0.11" NA
Apr 7 36° 55° 15° (1982) 81° (1991) 0.11" NA
Apr 8 37° 55° 11° (1972) 76° (1971) 0.11" NA
Apr 9 37° 55° 16° (1997) 75° (1987) 0.11" NA
Apr 10 37° 56° 20° (1960) 83° (1977) 0.12" NA
Apr 11 38° 56° 22° (1973) 83° (1977) 0.12" NA
Apr 12 38° 57° 20° (1957) 86° (1985) 0.12" NA
Apr 13 38° 57° 20° (1980) 81° (2006) 0.12" NA
Apr 14 39° 58° 22° (1957) 87° (2003) 0.12" NA
Apr 15 39° 58° 25° (1962) 87° (2002) 0.12" NA
Apr 16 40° 59° 24° (1962) 86° (2002) 0.12" NA
Apr 17 40° 59° 19° (1983) 84° (1977) 0.12" NA
Apr 18 40° 60° 23° (1983) 88° (1985) 0.13" NA
Apr 19 41° 60° 22° (1983) 86° (1985) 0.13" NA
Apr 20 41° 61° 26° (1956) 87° (1987) 0.13" NA
Apr 21 42° 61° 28° (1959) 88° (1980) 0.13" NA
Apr 22 42° 62° 25° (1986) 93° (1980) 0.13" NA
Apr 23 42° 62° 31° (1967) 86° (1960) 0.13" NA
Apr 24 43° 62° 24° (1956) 85° (1990) 0.13" NA
Apr 25 43° 63° 24° (1995) 85° (1990) 0.13" NA
Apr 26 43° 63° 32° (1951) 83° (1962) 0.13" NA
Apr 27 44° 64° 30° (1976) 86° (1977) 0.13" NA
Apr 28 44° 64° 31° (1950) 86° (2004) 0.13" NA
Apr 29 45° 65° 27° (1958) 88° (1970) 0.12" NA
Apr 30 45° 65° 26° (1956) 86° (1952) 0.12" NA
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