Riverdale, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 14° 31° -23° (1985) 63° (2002) 1.38" 6.5"
February 19° 35° -28° (1996) 68° (1976) 1.52" 4"
March 29° 48° -14° (1960) 83° (1986) 2.5" 3.8"
April 41° 61° 11° (1982) 88° (1980) 3.24" 0.9"
May 52° 72° 28° (2005) 93° (2006) 4.06" 0"
June 62° 82° 42° (1978) 100° (1988) 4.68" 0"
July 66° 85° 48° (1971) 102° (1995) 4" 0"
August 64° 83° 43° (1986) 103° (1983) 4.41" 0"
September 56° 76° 32° (1984) 97° (1990) 3.12" 0"
October 44° 63° 18° (1952) 91° (2006) 2.66" 0.2"
November 32° 49° -4° (1976) 78° (2000) 2.36" 0.4"
December 19° 34° -21° (1983) 69° (1998) 2.17" 4.3"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Feb 1 15° 32° -14° (1985) 52° (1987) 0.04" NA
Feb 2 15° 32° -24° (1996) 57° (1987) 0.03" NA
Feb 3 16° 32° -28° (1996) 56° (1987) 0.03" NA
Feb 4 16° 32° -21° (1996) 54° (2005) 0.04" NA
Feb 5 16° 32° -20° (1979) 54° (2005) 0.03" NA
Feb 6 16° 33° -12° (1982) 50° (2009) 0.04" NA
Feb 7 16° 33° -11° (1977) 59° (2009) 0.03" NA
Feb 8 17° 33° -11° (1971) 60° (1990) 0.04" NA
Feb 9 17° 33° -25° (1979) 59° (2009) 0.04" NA
Feb 10 17° 33° -10° (1982) 60° (2009) 0.05" NA
Feb 11 17° 34° -13° (1986) 60° (1999) 0.04" NA
Feb 12 18° 34° -10° (1986) 67° (1999) 0.05" NA
Feb 13 18° 34° -9° (1970) 57° (1990) 0.05" NA
Feb 14 18° 35° -3° (1986) 62° (1954) 0.05" NA
Feb 15 19° 35° -5° (1963) 62° (1954) 0.05" NA
Feb 16 19° 35° -11° (1958) 56° (1999) 0.05" NA
Feb 17 19° 36° -11° (1958) 60° (1981) 0.05" NA
Feb 18 19° 36° -10° (1978) 60° (1981) 0.06" NA
Feb 19 20° 36° -12° (1979) 64° (1971) 0.06" NA
Feb 20 20° 37° -3° (1958) 64° (1983) 0.06" NA
Feb 21 20° 37° -8° (1963) 58° (1991) 0.06" NA
Feb 22 21° 37° -6° (1978) 56° (1984) 0.06" NA
Feb 23 21° 38° -5° (1989) 60° (2000) 0.07" NA
Feb 24 22° 38° -7° (1967) 64° (2002) 0.07" NA
Feb 25 22° 39° -9° (1967) 62° (1976) 0.07" NA
Feb 26 22° 39° -11° (1950) 67° (2000) 0.07" NA
Feb 27 23° 40° -4° (1950) 68° (1976) 0.07" NA
Feb 28 23° 40° -3° (1962) 60° (1965) 0.08" NA
Feb 29 23° 40° 0° (1960) 62° (1972) 0.08" NA
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