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
Jul 1 63° 84° 52° (1959) 95° (1963) 0.17" 0"
Jul 2 64° 84° 49° (1959) 95° (1974) 0.17" 0"
Jul 3 64° 84° 47° (1967) 96° (1977) 0.17" 0"
Jul 4 64° 84° 47° (1967) 97° (1977) 0.17" 0"
Jul 5 64° 84° 44° (1972) 98° (1990) 0.17" 0"
Jul 6 64° 84° 46° (1972) 99° (1977) 0.17" 0"
Jul 7 64° 84° 51° (1984) 102° (1989) 0.18" 0"
Jul 8 64° 84° 55° (1958) 100° (1989) 0.17" 0"
Jul 9 64° 84° 54° (1959) 98° (1989) 0.18" 0"
Jul 10 65° 84° 54° (1956) 100° (1989) 0.17" 0"
Jul 11 65° 84° 54° (1996) 100° (1989) 0.16" 0"
Jul 12 65° 84° 51° (1967) 98° (1957) 0.17" 0"
Jul 13 65° 84° 49° (1975) 99° (1988) 0.17" 0"
Jul 14 65° 84° 47° (1967) 102° (1980) 0.17" 0"
Jul 15 65° 84° 51° (1967) 100° (1980) 0.16" 0"
Jul 16 65° 84° 54° (1968) 97° (1977) 0.17" 0"
Jul 17 65° 84° 51° (2009) 99° (1980) 0.16" 0"
Jul 18 65° 84° 52° (2009) 99° (1974) 0.17" 0"
Jul 19 65° 84° 55° (2009) 102° (1980) 0.15" 0"
Jul 20 65° 84° 51° (1971) 99° (1974) 0.15" 0"
Jul 21 65° 84° 50° (1970) 105° (1974) 0.15" 0"
Jul 22 65° 84° 53° (1992) 102° (1974) 0.14" 0"
Jul 23 65° 84° 52° (1990) 96° (1983) 0.14" 0"
Jul 24 65° 84° 52° (1990) 96° (2005) 0.14" 0"
Jul 25 65° 84° 54° (2004) 94° (1987) 0.14" 0"
Jul 26 65° 84° 49° (1991) 98° (1974) 0.14" 0"
Jul 27 65° 84° 53° (1962) 99° (1983) 0.14" 0"
Jul 28 64° 84° 54° (1981) 100° (1983) 0.13" 0"
Jul 29 64° 84° 52° (1981) 97° (1970) 0.13" 0"
Jul 30 64° 84° 43° (1971) 105° (1980) 0.14" 0"
Jul 31 64° 84° 50° (1962) 102° (1988) 0.14" 0"
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