Dubuque, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 27° -31° (1951) 61° (1981) 1.16" 7.9"
February 14° 33° -32° (1996) 65° (2000) 1.09" 6.7"
March 26° 45° -32° (1962) 87° (1986) 2.13" 4.6"
April 38° 60° 11° (1982) 93° (1980) 3.26" 1.6"
May 50° 72° 29° (2005) 95° (1991) 3.82" 0"
June 61° 82° 42° (1969) 101° (1988) 4.27" 0"
July 65° 85° 46° (1981) 108° (1995) 4.28" 0"
August 63° 83° 43° (1994) 104° (1988) 4.19" 0"
September 54° 74° 29° (1989) 97° (2000) 3.61" 0"
October 42° 62° 19° (1981) 92° (1997) 2.39" 0"
November 29° 45° -8° (1977) 75° (2000) 2.33" 1.9"
December 16° 32° -30° (1950) 66° (2001) 1.43" 7.8"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
May 1 44° 66° 30° (1950) 88° (1992) 0.12" NA
May 2 45° 67° 33° (1966) 87° (1992) 0.12" NA
May 3 45° 67° 29° (2005) 84° (1949) 0.12" NA
May 4 45° 67° 30° (1954) 88° (1952) 0.12" NA
May 5 46° 68° 33° (1954) 90° (1980) 0.12" NA
May 6 46° 68° 30° (1989) 85° (2000) 0.12" NA
May 7 47° 69° 32° (1954) 84° (2002) 0.12" NA
May 8 47° 69° 34° (1954) 87° (1963) 0.12" NA
May 9 47° 69° 30° (1966) 85° (1979) 0.12" NA
May 10 48° 70° 33° (1966) 88° (1987) 0.12" NA
May 11 48° 70° 33° (1966) 90° (2007) 0.12" NA
May 12 48° 70° 36° (1967) 87° (1991) 0.12" NA
May 13 49° 71° 35° (1953) 86° (1991) 0.12" NA
May 14 49° 71° 30° (1980) 85° (1991) 0.12" NA
May 15 50° 72° 37° (1997) 93° (2007) 0.12" NA
May 16 50° 72° 37° (1997) 92° (2001) 0.12" NA
May 17 50° 72° 36° (2007) 90° (1987) 0.12" NA
May 18 51° 73° 36° (1990) 90° (1998) 0.12" NA
May 19 51° 73° 39° (1968) 92° (1998) 0.12" NA
May 20 52° 73° 37° (2002) 89° (1975) 0.12" NA
May 21 52° 74° 39° (2002) 89° (1972) 0.12" NA
May 22 52° 74° 35° (1967) 89° (1970) 0.13" NA
May 23 53° 75° 36° (1963) 86° (1972) 0.13" NA
May 24 53° 75° 41° (2002) 90° (2007) 0.13" NA
May 25 53° 75° 41° (1988) 89° (1977) 0.13" NA
May 26 54° 76° 38° (1961) 92° (1985) 0.13" NA
May 27 54° 76° 41° (1971) 88° (1978) 0.13" NA
May 28 55° 76° 40° (1965) 95° (1991) 0.13" NA
May 29 55° 77° 37° (1965) 95° (1991) 0.13" NA
May 30 55° 77° 43° (1965) 91° (1953) 0.13" NA
May 31 56° 77° 45° (1972) 91° (1988) 0.13" NA
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