Deep River, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 12° 30° -24° (1979) 70° (1989) 1.12" 8"
February 16° 35° -27° (1996) 72° (1976) 1.32" 7.6"
March 27° 48° -20° (1962) 86° (1986) 2.51" 4.1"
April 39° 61° 7° (1982) 93° (1965) 3.46" 0.8"
May 50° 71° 25° (2005) 94° (1956) 4.58" 0"
June 60° 80° 41° (1993) 105° (1988) 4.81" 0"
July 64° 85° 45° (1972) 107° (1988) 4.09" 0"
August 62° 83° 40° (1950) 107° (1988) 4.9" 0"
September 52° 75° 28° (1964) 99° (1955) 3.56" 0"
October 41° 63° 14° (1972) 93° (1953) 2.82" 0.3"
November 29° 48° -5° (1976) 79° (1999) 2.44" 1"
December 16° 33° -23° (1989) 71° (1998) 1.45" 7"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 45° 67° 30° (1950) 88° (1952) 0.14" 0"
May 2 45° 67° 29° (1970) 89° (1952) 0.15" 0"
May 3 46° 67° 25° (2005) 88° (1949) 0.15" 0"
May 4 46° 68° 28° (2005) 89° (1952) 0.14" 0"
May 5 46° 68° 33° (1958) 90° (1949) 0.14" 0"
May 6 47° 68° 30° (1989) 87° (2000) 0.14" 0"
May 7 47° 69° 31° (1954) 89° (2004) 0.14" 0"
May 8 47° 69° 34° (1976) 88° (1963) 0.14" 0"
May 9 48° 69° 32° (1966) 89° (1963) 0.15" 0"
May 10 48° 69° 30° (1966) 89° (1963) 0.15" 0"
May 11 49° 70° 34° (1966) 89° (1958) 0.15" 0"
May 12 49° 70° 34° (1979) 94° (1956) 0.15" 0"
May 13 49° 70° 35° (1997) 90° (1956) 0.15" 0"
May 14 50° 71° 35° (1981) 90° (1988) 0.16" 0"
May 15 50° 71° 34° (1997) 87° (1977) 0.15" 0"
May 16 50° 71° 34° (1997) 87° (1962) 0.15" 0"
May 17 51° 71° 37° (1997) 88° (1987) 0.15" 0"
May 18 51° 72° 38° (2002) 89° (1975) 0.15" 0"
May 19 51° 72° 36° (2002) 90° (1975) 0.15" 0"
May 20 52° 72° 37° (2002) 90° (1975) 0.15" 0"
May 21 52° 73° 34° (2002) 90° (1975) 0.15" 0"
May 22 52° 73° 33° (1963) 90° (1970) 0.15" 0"
May 23 53° 73° 34° (1963) 89° (1955) 0.15" 0"
May 24 53° 73° 40° (1979) 89° (1978) 0.15" 0"
May 25 53° 74° 39° (1992) 93° (1967) 0.15" 0"
May 26 53° 74° 34° (1961) 92° (1967) 0.14" 0"
May 27 54° 74° 37° (1971) 90° (1980) 0.15" 0"
May 28 54° 75° 39° (1992) 90° (1980) 0.14" 0"
May 29 54° 75° 38° (1984) 92° (1991) 0.15" 0"
May 30 55° 75° 42° (1965) 89° (2006) 0.15" 0"
May 31 55° 76° 41° (1965) 91° (1988) 0.15" 0"
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