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
Jun 1 55° 77° 37° (1993) 89° (2000) 0.15" NA
Jun 2 55° 77° 36° (1969) 90° (2000) 0.15" NA
Jun 3 56° 77° 39° (1969) 91° (1972) 0.15" NA
Jun 4 56° 78° 41° (1998) 90° (1958) 0.14" NA
Jun 5 56° 78° 41° (1992) 100° (1977) 0.14" NA
Jun 6 57° 78° 43° (1983) 90° (1969) 0.14" NA
Jun 7 57° 79° 45° (1992) 92° (1963) 0.14" NA
Jun 8 57° 79° 47° (1974) 97° (1985) 0.14" NA
Jun 9 57° 79° 42° (1989) 93° (1972) 0.14" NA
Jun 10 58° 79° 42° (1972) 97° (1977) 0.14" NA
Jun 11 58° 80° 43° (1972) 92° (1956) 0.14" NA
Jun 12 58° 80° 47° (1974) 93° (1956) 0.14" NA
Jun 13 58° 80° 43° (1985) 93° (1956) 0.14" NA
Jun 14 59° 81° 49° (1989) 96° (1987) 0.14" NA
Jun 15 59° 81° 44° (1969) 95° (1987) 0.14" NA
Jun 16 59° 81° 36° (1989) 95° (1978) 0.14" NA
Jun 17 60° 81° 42° (1989) 91° (1978) 0.14" NA
Jun 18 60° 82° 50° (1985) 95° (1988) 0.14" NA
Jun 19 60° 82° 48° (1976) 101° (1956) 0.14" NA
Jun 20 60° 82° 47° (1969) 101° (1988) 0.14" NA
Jun 21 60° 82° 38° (1992) 101° (1988) 0.15" NA
Jun 22 61° 82° 43° (1972) 99° (1988) 0.15" NA
Jun 23 61° 83° 46° (1972) 98° (1988) 0.15" NA
Jun 24 61° 83° 48° (1957) 101° (1988) 0.15" NA
Jun 25 61° 83° 46° (2004) 105° (1988) 0.15" NA
Jun 26 62° 83° 48° (1958) 98° (1988) 0.15" NA
Jun 27 62° 83° 42° (1992) 96° (1971) 0.15" NA
Jun 28 62° 83° 47° (1992) 99° (1988) 0.15" NA
Jun 29 62° 84° 52° (1989) 96° (1988) 0.15" NA
Jun 30 63° 84° 50° (1989) 96° (1963) 0.15" NA
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