Ontonagon, Michigan
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 25° -31° (1984) 56° (1981) 2.85" 53.4"
February 30° -42° (1979) 63° (1981) 1.68" 27.1"
March 18° 40° -27° (1984) 74° (1986) 1.73" 18.9"
April 30° 54° -4° (2003) 89° (2002) 2.26" 6.9"
May 41° 67° 18° (1978) 95° (2006) 2.97" 1"
June 50° 75° 25° (1992) 96° (2005) 3.03" 0"
July 55° 79° 32° (1988) 101° (1988) 3.28" 0"
August 54° 78° 34° (1982) 99° (1983) 2.86" 0"
September 47° 70° 25° (1981) 96° (1998) 3.28" 0.1"
October 37° 56° 15° (1989) 88° (2007) 3.5" 2.5"
November 27° 41° -5° (1993) 77° (1978) 2.69" 23.5"
December 14° 29° -23° (1996) 62° (1982) 3.04" 54.2"
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 52° 75° 37° (1991) 92° (2008) 0.09" 0"
Sep 2 52° 75° 37° (1994) 92° (2008) 0.1" 0"
Sep 3 52° 75° 35° (1997) 93° (1999) 0.09" 0"
Sep 4 51° 74° 34° (2000) 90° (1999) 0.09" 0"
Sep 5 51° 74° 35° (1981) 96° (1998) 0.1" 0"
Sep 6 51° 74° 32° (1988) 90° (2007) 0.09" 0"
Sep 7 50° 73° 29° (1986) 86° (2007) 0.09" 0"
Sep 8 50° 73° 32° (1995) 86° (1983) 0.1" 0"
Sep 9 50° 72° 28° (2006) 86° (2003) 0.09" 0"
Sep 10 50° 72° 29° (2006) 91° (2005) 0.1" 0"
Sep 11 49° 72° 34° (1992) 97° (2005) 0.1" 0"
Sep 12 49° 71° 34° (1985) 85° (2005) 0.1" 0"
Sep 13 49° 71° 35° (1985) 87° (1990) 0.1" 0"
Sep 14 48° 70° 33° (1986) 85° (1997) 0.1" 0"
Sep 15 48° 70° 30° (2007) 83° (1994) 0.1" 0"
Sep 16 47° 70° 31° (1986) 82° (2005) 0.11" 0"
Sep 17 47° 69° 30° (1980) 84° (1979) 0.12" 0"
Sep 18 47° 69° 34° (1993) 88° (2000) 0.11" 0"
Sep 19 46° 68° 30° (1979) 89° (1985) 0.11" 0"
Sep 20 46° 68° 32° (1995) 86° (1985) 0.12" 0"
Sep 21 46° 67° 30° (1982) 85° (2005) 0.12" 0"
Sep 22 45° 67° 25° (1981) 82° (2004) 0.12" 0"
Sep 23 45° 67° 26° (1992) 82° (2007) 0.13" 0"
Sep 24 44° 66° 27° (1989) 87° (2007) 0.13" 0"
Sep 25 44° 66° 27° (2001) 83° (2007) 0.13" 0"
Sep 26 44° 65° 29° (2010) 85° (2008) 0.12" 0"
Sep 27 43° 65° 27° (1991) 86° (1987) 0.13" 0"
Sep 28 43° 64° 27° (2000) 82° (1983) 0.13" 0.1"
Sep 29 43° 64° 27° (1984) 81° (2000) 0.13" 0"
Sep 30 42° 63° 28° (1993) 81° (2000) 0.13" 0"
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