Grand River, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 13° 31° -24° (1982) 65° (2003) 0.88" 6.5"
February 17° 36° -25° (1996) 74° (1972) 1.23" 5.1"
March 27° 49° -18° (1962) 87° (1986) 2.38" 3.5"
April 38° 61° 8° (1982) 89° (1987) 3.5" 0.9"
May 50° 71° 25° (1992) 93° (1967) 5.11" 0"
June 59° 80° 36° (1989) 105° (1988) 4.67" 0"
July 65° 84° 43° (1971) 105° (1980) 4.88" 0"
August 62° 83° 41° (1992) 104° (1988) 4.21" 0"
September 53° 76° 25° (1989) 97° (2000) 3.92" 0"
October 41° 63° 14° (1972) 91° (1963) 2.89" 0.4"
November 29° 48° -15° (1964) 79° (1999) 2.1" 1.7"
December 17° 34° -30° (1989) 67° (1984) 1.29" 7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 46° 69° 28° (1985) 90° (1956) 0.11" 0"
Oct 2 46° 69° 27° (1974) 90° (1983) 0.11" 0"
Oct 3 45° 69° 27° (1980) 87° (1983) 0.11" 0"
Oct 4 45° 68° 28° (1989) 90° (1997) 0.1" 0"
Oct 5 44° 68° 29° (1989) 91° (1963) 0.09" 0"
Oct 6 44° 67° 29° (2000) 89° (1963) 0.1" 0"
Oct 7 44° 67° 23° (1991) 87° (1997) 0.09" 0"
Oct 8 43° 67° 24° (1991) 83° (1979) 0.08" 0"
Oct 9 43° 66° 24° (2000) 84° (2010) 0.09" 0"
Oct 10 43° 66° 25° (1993) 87° (1963) 0.09" 0"
Oct 11 42° 65° 24° (1987) 82° (1960) 0.09" 0"
Oct 12 42° 65° 28° (2006) 86° (1956) 0.09" 0"
Oct 13 42° 65° 22° (1979) 84° (1975) 0.09" 0.1"
Oct 14 42° 64° 27° (1969) 84° (1968) 0.08" 0"
Oct 15 41° 64° 26° (1991) 83° (1963) 0.09" 0"
Oct 16 41° 63° 25° (1976) 84° (1999) 0.09" 0"
Oct 17 41° 63° 20° (1992) 82° (1965) 0.09" 0"
Oct 18 40° 63° 20° (1992) 82° (1991) 0.1" 0"
Oct 19 40° 62° 14° (1972) 82° (1963) 0.1" 0"
Oct 20 40° 62° 18° (1960) 85° (2003) 0.1" 0.1"
Oct 21 39° 61° 21° (1987) 85° (1979) 0.1" 0"
Oct 22 39° 61° 20° (1976) 79° (1963) 0.1" 0"
Oct 23 39° 61° 21° (1981) 80° (1963) 0.09" 0"
Oct 24 38° 60° 24° (2006) 82° (1991) 0.09" 0"
Oct 25 38° 60° 22° (1990) 78° (1989) 0.09" 0"
Oct 26 38° 59° 22° (1980) 80° (1963) 0.09" 0.1"
Oct 27 37° 59° 15° (1997) 78° (1966) 0.09" 0"
Oct 28 37° 58° 16° (1997) 81° (1999) 0.09" 0"
Oct 29 37° 58° 19° (1980) 74° (1956) 0.09" 0.1"
Oct 30 36° 57° 19° (1988) 78° (2004) 0.09" 0"
Oct 31 36° 57° 18° (1993) 83° (1968) 0.08" 0"
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