Ontonagon, Michigan
Monthly Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
January 24° -31° (1984) 56° (1981) 3.02" NA
February 30° -42° (1979) 63° (1981) 1.47" NA
March 18° 39° -27° (1984) 74° (1986) 2.04" NA
April 30° 53° -4° (2003) 89° (2002) 2.08" NA
May 40° 67° 18° (1978) 95° (2006) 3" NA
June 49° 75° 25° (1992) 96° (2005) 3.08" NA
July 54° 79° 32° (1988) 101° (1988) 3.46" NA
August 53° 78° 34° (1982) 99° (1983) 3.34" NA
September 46° 68° 25° (1981) 96° (1998) 3.09" NA
October 37° 57° 15° (1989) 88° (2007) 3.13" NA
November 26° 40° -5° (1993) 77° (1978) 2.79" NA
December 14° 28° -23° (1996) 62° (1982) 3.06" NA
Daily Averages & Records -  °F | °C
Date Average
Low
Average
High
Record
Low
Record
High
Average
Precipitation
Average
Snow
Sep 1 50° 73° 37° (1991) 87° (1999) 0.11" NA
Sep 2 50° 73° 37° (1994) 89° (1983) 0.11" NA
Sep 3 49° 73° 35° (1997) 93° (1999) 0.11" NA
Sep 4 49° 72° 34° (2000) 90° (1999) 0.11" NA
Sep 5 49° 72° 35° (1981) 96° (1998) 0.11" NA
Sep 6 49° 71° 32° (1988) 90° (2007) 0.11" NA
Sep 7 48° 71° 29° (1986) 86° (2007) 0.11" NA
Sep 8 48° 71° 32° (1995) 86° (1983) 0.11" NA
Sep 9 48° 70° 28° (2006) 86° (2003) 0.11" NA
Sep 10 48° 70° 29° (2006) 90° (1998) 0.1" NA
Sep 11 47° 70° 34° (1992) 87° (1982) 0.1" NA
Sep 12 47° 69° 34° (1985) 83° (1982) 0.1" NA
Sep 13 47° 69° 35° (1985) 87° (1990) 0.1" NA
Sep 14 46° 69° 33° (1986) 85° (1997) 0.1" NA
Sep 15 46° 68° 30° (2007) 83° (1994) 0.1" NA
Sep 16 46° 68° 31° (1986) 81° (1992) 0.1" NA
Sep 17 45° 68° 30° (1980) 84° (1979) 0.1" NA
Sep 18 45° 67° 34° (1993) 88° (2000) 0.1" NA
Sep 19 45° 67° 30° (1979) 89° (1985) 0.1" NA
Sep 20 45° 67° 32° (1995) 86° (1985) 0.1" NA
Sep 21 44° 66° 30° (1982) 82° (1989) 0.1" NA
Sep 22 44° 66° 25° (1981) 82° (2004) 0.1" NA
Sep 23 44° 66° 26° (1992) 82° (2007) 0.1" NA
Sep 24 43° 65° 27° (1989) 87° (2007) 0.1" NA
Sep 25 43° 65° 27° (2001) 83° (2007) 0.1" NA
Sep 26 43° 65° 31° (1980) 79° (2004) 0.1" NA
Sep 27 43° 64° 27° (1991) 86° (1987) 0.1" NA
Sep 28 42° 64° 27° (2000) 82° (1983) 0.1" NA
Sep 29 42° 64° 27° (1984) 81° (2000) 0.1" NA
Sep 30 42° 63° 28° (1993) 81° (2000) 0.1" NA
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