Riverton, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 12° 32° -22° (1966) 69° (1989) 0.82" 6.5"
February 18° 39° -23° (1996) 82° (1972) 0.95" 6.1"
March 28° 50° -17° (1962) 91° (1986) 2.44" 5.9"
April 40° 63° 8° (1975) 96° (1989) 3.36" 1.7"
May 52° 73° 28° (1976) 100° (1989) 4.51" 0"
June 61° 83° 41° (1998) 105° (1980) 4.22" 0"
July 66° 87° 44° (1971) 109° (1974) 5.08" 0"
August 63° 85° 42° (1950) 103° (2003) 3.85" 0"
September 54° 78° 28° (1995) 102° (2000) 3.61" 0"
October 42° 66° 14° (1997) 94° (1963) 2.63" 0.5"
November 29° 48° -9° (1964) 83° (1999) 2.09" 3.1"
December 18° 35° -25° (1989) 72° (1964) 1.1" 7.1"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 46° 68° 31° (1966) 92° (1959) 0.13" NA
May 2 47° 68° 30° (1967) 92° (1968) 0.13" NA
May 3 47° 69° 28° (1976) 88° (1949) 0.14" NA
May 4 47° 69° 35° (1967) 93° (1950) 0.14" NA
May 5 48° 69° 35° (1968) 92° (1966) 0.14" NA
May 6 48° 70° 34° (1989) 91° (1955) 0.14" NA
May 7 49° 70° 38° (1960) 95° (1966) 0.14" NA
May 8 49° 70° 32° (1980) 92° (1966) 0.14" NA
May 9 49° 71° 33° (1966) 90° (1956) 0.14" NA
May 10 50° 71° 34° (1981) 90° (1962) 0.15" NA
May 11 50° 72° 35° (1979) 89° (1958) 0.15" NA
May 12 51° 72° 37° (1966) 98° (1956) 0.15" NA
May 13 51° 72° 32° (1997) 92° (1987) 0.15" NA
May 14 51° 73° 33° (1997) 92° (1987) 0.15" NA
May 15 52° 73° 32° (1959) 89° (1977) 0.15" NA
May 16 52° 73° 38° (2005) 89° (1987) 0.15" NA
May 17 53° 74° 40° (1973) 92° (1987) 0.15" NA
May 18 53° 74° 42° (2002) 93° (1967) 0.15" NA
May 19 53° 74° 39° (1968) 91° (1956) 0.15" NA
May 20 54° 75° 40° (1968) 91° (2006) 0.15" NA
May 21 54° 75° 37° (1968) 91° (1970) 0.15" NA
May 22 54° 75° 34° (1963) 90° (1970) 0.15" NA
May 23 55° 76° 40° (1963) 91° (2000) 0.15" NA
May 24 55° 76° 43° (1992) 98° (1967) 0.15" NA
May 25 55° 76° 43° (2002) 98° (1967) 0.15" NA
May 26 56° 77° 40° (1961) 96° (1967) 0.15" NA
May 27 56° 77° 40° (1992) 93° (1966) 0.15" NA
May 28 56° 78° 42° (1992) 92° (1966) 0.15" NA
May 29 57° 78° 43° (1992) 100° (1989) 0.14" NA
May 30 57° 78° 42° (1983) 98° (1989) 0.14" NA
May 31 57° 79° 45° (1983) 98° (2000) 0.14" NA
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