Grand River, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 11° 30° -24° (1982) 65° (2003) 0.8" 5.3"
February 16° 36° -25° (1996) 74° (1972) 1.02" 4.6"
March 26° 48° -18° (1962) 87° (1986) 2.33" 3.3"
April 37° 61° 8° (1982) 89° (1987) 3.34" 0.9"
May 50° 71° 25° (1992) 93° (1967) 4.47" 0"
June 59° 81° 36° (1989) 105° (1988) 4.33" 0"
July 65° 85° 43° (1971) 105° (1980) 4.61" 0"
August 63° 83° 41° (1992) 104° (1988) 3.75" 0"
September 53° 76° 25° (1989) 97° (2000) 4.28" 0"
October 42° 64° 14° (1972) 91° (1963) 2.93" 0.3"
November 29° 47° -15° (1964) 79° (1999) 2.28" 2"
December 17° 34° -30° (1989) 67° (1984) 1.13" 5.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Oct 1 48° 71° 28° (1985) 90° (1956) 0.12" NA
Oct 2 47° 70° 27° (1974) 90° (1983) 0.12" NA
Oct 3 47° 70° 27° (1980) 87° (1983) 0.12" NA
Oct 4 47° 70° 28° (1989) 90° (1997) 0.11" NA
Oct 5 46° 69° 29° (1989) 91° (1963) 0.11" NA
Oct 6 46° 69° 29° (2000) 89° (1963) 0.11" NA
Oct 7 46° 69° 23° (1991) 87° (1997) 0.11" NA
Oct 8 45° 68° 24° (1991) 83° (1979) 0.11" NA
Oct 9 45° 68° 24° (2000) 83° (1962) 0.1" NA
Oct 10 44° 67° 25° (1993) 87° (1963) 0.1" NA
Oct 11 44° 67° 24° (1987) 82° (1960) 0.1" NA
Oct 12 44° 66° 28° (2006) 86° (1956) 0.1" NA
Oct 13 43° 66° 22° (1979) 84° (1975) 0.1" NA
Oct 14 43° 65° 27° (1969) 84° (1968) 0.09" NA
Oct 15 42° 65° 26° (1991) 83° (1963) 0.09" NA
Oct 16 42° 65° 25° (1976) 84° (1999) 0.09" NA
Oct 17 42° 64° 20° (1992) 82° (1965) 0.09" NA
Oct 18 41° 63° 20° (1992) 82° (1991) 0.09" NA
Oct 19 41° 63° 14° (1972) 82° (1963) 0.09" NA
Oct 20 40° 62° 18° (1960) 85° (2003) 0.09" NA
Oct 21 40° 62° 21° (1987) 85° (1979) 0.09" NA
Oct 22 40° 61° 20° (1976) 79° (1963) 0.08" NA
Oct 23 39° 61° 21° (1981) 80° (1963) 0.08" NA
Oct 24 39° 60° 24° (2006) 82° (1991) 0.08" NA
Oct 25 38° 60° 22° (1990) 78° (1989) 0.08" NA
Oct 26 38° 59° 22° (1980) 80° (1963) 0.08" NA
Oct 27 37° 59° 15° (1997) 78° (1966) 0.08" NA
Oct 28 37° 58° 16° (1997) 81° (1999) 0.08" NA
Oct 29 36° 57° 19° (1980) 74° (1956) 0.08" NA
Oct 30 36° 57° 19° (1988) 78° (2004) 0.08" NA
Oct 31 36° 56° 18° (1993) 83° (1968) 0.08" NA
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