All-time weather records — Ontonagon, MI

Record high
100.9°F
July 7, 1988
Record low
-42.0°F
February 17, 1979
Wettest day
3.90 in
August 23, 1978

Climate change signal in Ontonagon

0%

of Ontonagon's all-time daily heat records were set in the last decade (0 of 366 records since 2015).

0%

of all-time daily cold records were set in the last decade (0 of 366 records since 2015).

If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:

Decade Heat records set # Cold records set #
1970s
12
40
1980s
96
133
1990s
97
96
2000s
111
64
2010s
50
33

Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 1977, the latest in 2014. Period of observation: 1977-2014.

Records by month

Month Hottest day Coldest day Wettest day
January 55.9°F — Jan 25, 1981 -41.1°F — Jan 19, 1994 1.45 in — Jan 18, 1996
February 66.0°F — Feb 16, 2011 -42.0°F — Feb 17, 1979 1.40 in — Feb 8, 2011
March 82.9°F — Mar 19, 2012 -33.0°F — Mar 7, 1996 2.50 in — Mar 25, 1996
April 89.1°F — Apr 16, 2002 -6.0°F — Apr 5, 2014 1.60 in — Apr 11, 2002
May 95.0°F — May 29, 2006 18.0°F — May 1, 1978 2.25 in — May 26, 1991
June 96.1°F — Jun 23, 2005 25.0°F — Jun 21, 1992 2.02 in — Jun 11, 1986
July 100.9°F — Jul 7, 1988 32.0°F — Jul 1, 1988 2.51 in — Jul 18, 1987
August 99.0°F — Aug 7, 1983 34.0°F — Aug 16, 1979 3.90 in — Aug 23, 1978
September 97.0°F — Sep 11, 2005 25.0°F — Sep 22, 1981 2.31 in — Sep 5, 1983
October 88.0°F — Oct 7, 2007 15.1°F — Oct 19, 1989 1.85 in — Oct 25, 2012
November 77.0°F — Nov 3, 1978 -5.1°F — Nov 23, 1989 1.90 in — Nov 1, 1991
December 62.1°F — Dec 3, 1982 -23.1°F — Dec 27, 1996 0.97 in — Dec 5, 1998

Click a month to see every daily record for that month in Ontonagon.