Winthrop, Iowa
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 26° -26° (1985) 61° (2002) 1.03" NA
February 16° 32° -30° (1996) 66° (2000) 1.15" NA
March 27° 45° -11° (2002) 86° (1986) 1.96" NA
April 38° 60° -1° (1982) 90° (2007) 3.26" NA
May 50° 72° 20° (2005) 93° (1991) 3.84" NA
June 60° 82° 36° (1993) 100° (1988) 5.09" NA
July 63° 85° 41° (1984) 102° (1988) 4.09" NA
August 61° 82° 36° (2004) 101° (1988) 4.89" NA
September 52° 75° 26° (1984) 96° (1999) 3.24" NA
October 41° 63° 15° (1997) 94° (1997) 2.47" NA
November 28° 45° -6° (1986) 79° (1999) 2.41" NA
December 15° 31° -29° (2000) 67° (1998) 1.33" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 57° 79° 44° (1987) 95° (1984) 0.14" NA
Sep 2 56° 79° 45° (2003) 96° (1999) 0.14" NA
Sep 3 56° 79° 44° (1982) 90° (1983) 0.13" NA
Sep 4 56° 78° 42° (1984) 90° (1983) 0.13" NA
Sep 5 55° 78° 40° (1988) 92° (1990) 0.13" NA
Sep 6 55° 78° 36° (1988) 93° (1998) 0.13" NA
Sep 7 55° 78° 36° (1986) 95° (1985) 0.12" NA
Sep 8 54° 77° 37° (1986) 91° (2003) 0.12" NA
Sep 9 54° 77° 38° (1988) 91° (1983) 0.12" NA
Sep 10 54° 77° 43° (1989) 89° (2000) 0.12" NA
Sep 11 53° 77° 37° (1992) 95° (2000) 0.11" NA
Sep 12 53° 76° 37° (2007) 92° (1998) 0.11" NA
Sep 13 53° 76° 36° (1985) 89° (1994) 0.11" NA
Sep 14 53° 76° 34° (1996) 90° (1994) 0.11" NA
Sep 15 52° 75° 32° (1984) 88° (1994) 0.11" NA
Sep 16 52° 75° 29° (1984) 85° (1997) 0.1" NA
Sep 17 52° 75° 36° (1981) 94° (1988) 0.1" NA
Sep 18 51° 74° 34° (1981) 90° (2007) 0.1" NA
Sep 19 51° 74° 32° (1991) 90° (1984) 0.1" NA
Sep 20 50° 74° 28° (1991) 82° (1984) 0.1" NA
Sep 21 50° 73° 33° (1982) 85° (1984) 0.1" NA
Sep 22 50° 73° 30° (1983) 89° (2007) 0.09" NA
Sep 23 49° 73° 26° (1983) 83° (1999) 0.09" NA
Sep 24 49° 72° 29° (1985) 89° (1984) 0.09" NA
Sep 25 49° 72° 33° (1985) 85° (1986) 0.09" NA
Sep 26 48° 72° 26° (1984) 87° (1986) 0.09" NA
Sep 27 48° 71° 28° (1985) 85° (1990) 0.09" NA
Sep 28 48° 71° 31° (1981) 84° (1983) 0.09" NA
Sep 29 47° 71° 27° (1984) 82° (1998) 0.09" NA
Sep 30 47° 70° 29° (2003) 85° (2002) 0.09" NA
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