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
Jul 1 63° 84° 52° (1959) 95° (1963) 0.15" NA
Jul 2 63° 84° 49° (1959) 95° (1974) 0.15" NA
Jul 3 63° 84° 47° (1967) 96° (1977) 0.15" NA
Jul 4 64° 84° 47° (1967) 97° (1977) 0.15" NA
Jul 5 64° 84° 44° (1972) 98° (1990) 0.15" NA
Jul 6 64° 85° 46° (1972) 99° (1977) 0.15" NA
Jul 7 64° 85° 51° (1984) 102° (1989) 0.15" NA
Jul 8 64° 85° 55° (1958) 100° (1989) 0.16" NA
Jul 9 64° 85° 54° (1959) 98° (1989) 0.16" NA
Jul 10 64° 85° 54° (1956) 100° (1989) 0.16" NA
Jul 11 65° 85° 54° (1996) 100° (1989) 0.16" NA
Jul 12 65° 85° 51° (1967) 98° (1957) 0.16" NA
Jul 13 65° 85° 49° (1975) 99° (1988) 0.15" NA
Jul 14 65° 85° 47° (1967) 102° (1980) 0.15" NA
Jul 15 65° 85° 51° (1967) 100° (1980) 0.15" NA
Jul 16 65° 85° 54° (1968) 97° (1977) 0.15" NA
Jul 17 65° 85° 53° (1976) 99° (1980) 0.15" NA
Jul 18 65° 85° 53° (1984) 99° (1974) 0.15" NA
Jul 19 65° 85° 57° (1959) 102° (1980) 0.15" NA
Jul 20 65° 86° 51° (1971) 99° (1974) 0.15" NA
Jul 21 65° 86° 50° (1970) 105° (1974) 0.15" NA
Jul 22 65° 86° 53° (1992) 102° (1974) 0.15" NA
Jul 23 65° 86° 52° (1990) 96° (1983) 0.15" NA
Jul 24 65° 86° 52° (1990) 96° (2005) 0.15" NA
Jul 25 66° 86° 54° (2004) 94° (1987) 0.14" NA
Jul 26 65° 86° 49° (1991) 98° (1974) 0.14" NA
Jul 27 65° 86° 53° (1962) 99° (1983) 0.14" NA
Jul 28 65° 85° 54° (1981) 100° (1983) 0.14" NA
Jul 29 65° 85° 52° (1981) 97° (1970) 0.14" NA
Jul 30 65° 85° 43° (1971) 105° (1980) 0.13" NA
Jul 31 65° 85° 50° (1962) 102° (1988) 0.13" NA
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