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
Dec 1 21° 39° 2° (1985) 64° (1970) 0.05" 0.2"
Dec 2 21° 39° -3° (1985) 66° (1973) 0.05" 0.2"
Dec 3 20° 38° -4° (1985) 63° (1956) 0.04" 0.2"
Dec 4 20° 38° 2° (2005) 64° (1998) 0.05" 0.2"
Dec 5 19° 37° -2° (2005) 65° (1998) 0.05" 0.2"
Dec 6 19° 37° -6° (1972) 66° (2001) 0.04" 0.2"
Dec 7 19° 37° -9° (2005) 58° (1981) 0.05" 0.3"
Dec 8 18° 36° -9° (2005) 60° (1991) 0.04" 0.2"
Dec 9 18° 36° -8° (1995) 54° (1984) 0.05" 0.3"
Dec 10 18° 35° -9° (1995) 59° (1979) 0.04" 0.2"
Dec 11 17° 35° -9° (2009) 65° (1965) 0.05" 0.2"
Dec 12 17° 35° -20° (1989) 63° (1968) 0.04" 0.3"
Dec 13 17° 34° -19° (1989) 60° (1975) 0.04" 0.2"
Dec 14 17° 34° -13° (1985) 60° (1975) 0.04" 0.3"
Dec 15 16° 34° -15° (1989) 57° (1957) 0.04" 0.2"
Dec 16 16° 34° -15° (1989) 61° (2002) 0.04" 0.3"
Dec 17 16° 33° -10° (1989) 58° (2006) 0.03" 0.2"
Dec 18 16° 33° -15° (1983) 62° (1976) 0.04" 0.2"
Dec 19 16° 33° -19° (1983) 56° (1966) 0.05" 0.3"
Dec 20 15° 33° -17° (1989) 57° (1967) 0.04" 0.2"
Dec 21 15° 33° -19° (1989) 57° (1967) 0.04" 0.3"
Dec 22 15° 32° -23° (1989) 58° (1957) 0.04" 0.2"
Dec 23 15° 32° -30° (1989) 62° (1964) 0.04" 0.2"
Dec 24 15° 32° -26° (1989) 55° (1982) 0.04" 0.3"
Dec 25 15° 32° -16° (1983) 58° (1960) 0.04" 0.2"
Dec 26 14° 32° -14° (1962) 54° (1959) 0.04" 0.2"
Dec 27 14° 32° -4° (1990) 59° (1976) 0.04" 0.2"
Dec 28 14° 32° -10° (1961) 67° (1984) 0.04" 0.2"
Dec 29 14° 32° -8° (1983) 67° (1984) 0.03" 0.2"
Dec 30 14° 31° -9° (1961) 61° (1965) 0.04" 0.2"
Dec 31 14° 31° -16° (1976) 63° (2004) 0.03" 0.2"
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