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
Aug 1 65° 85° 50° (1992) 100° (1980) 0.13" NA
Aug 2 65° 85° 51° (1992) 99° (1988) 0.13" NA
Aug 3 65° 85° 51° (1992) 99° (1983) 0.13" NA
Aug 4 65° 85° 48° (1978) 96° (1983) 0.12" NA
Aug 5 65° 85° 49° (1957) 98° (1983) 0.12" NA
Aug 6 65° 85° 50° (1994) 95° (1984) 0.12" NA
Aug 7 65° 85° 47° (1989) 100° (1988) 0.12" NA
Aug 8 64° 85° 46° (1989) 100° (1988) 0.12" NA
Aug 9 64° 85° 45° (1989) 98° (1980) 0.12" NA
Aug 10 64° 85° 47° (1989) 98° (1983) 0.12" NA
Aug 11 64° 84° 47° (1967) 96° (1988) 0.12" NA
Aug 12 64° 84° 45° (1964) 96° (1957) 0.12" NA
Aug 13 64° 84° 43° (1964) 97° (1980) 0.12" NA
Aug 14 63° 84° 48° (1992) 102° (1988) 0.11" NA
Aug 15 63° 84° 45° (1992) 104° (1988) 0.11" NA
Aug 16 63° 84° 45° (1992) 103° (1983) 0.11" NA
Aug 17 63° 84° 47° (1992) 103° (1988) 0.11" NA
Aug 18 63° 83° 49° (1989) 101° (1983) 0.12" NA
Aug 19 62° 83° 47° (1967) 101° (2003) 0.12" NA
Aug 20 62° 83° 42° (1991) 95° (1983) 0.12" NA
Aug 21 62° 83° 43° (1991) 98° (1983) 0.12" NA
Aug 22 62° 83° 49° (1992) 94° (1983) 0.12" NA
Aug 23 61° 82° 44° (1966) 94° (1962) 0.12" NA
Aug 24 61° 82° 48° (1966) 96° (1983) 0.12" NA
Aug 25 61° 82° 45° (1958) 99° (1983) 0.12" NA
Aug 26 61° 82° 50° (1964) 101° (1983) 0.12" NA
Aug 27 60° 81° 44° (1967) 98° (2003) 0.12" NA
Aug 28 60° 81° 41° (1986) 99° (1984) 0.13" NA
Aug 29 60° 81° 43° (1992) 100° (1984) 0.13" NA
Aug 30 59° 81° 50° (1992) 94° (1983) 0.13" NA
Aug 31 59° 80° 41° (1992) 94° (1995) 0.13" NA
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