St. Clair County, MI
An ordinary day in St. Clair County, MI: was cooler than 16 of 75 earlier years in the county average (county average from NOAA gridded data, 1951 to 2026).
Last updated . This page normally updates every day; the latest update is late.
- High
- 73.4°F
- Warmest since 2025
- 17th warmest of 76
- Low
- 46.9°F
- Coldest since 2018
- 36th coldest of 76
No measurable precipitation in the county average of St. Clair County, MI for 8 days to Tuesday 29 September 2026 (county average from NOAA gridded data, 1951 to 2026).
- Normal range, 40.2 to 55.3°F
Every year as a table
Every 29 September high of the county average in St. Clair County, MI since 1951: 73.4°F in 2026; the highest is 81.2°F, in 1986.
| Year | High, °F | Low, °F |
|---|---|---|
| 2026 | 73.4 | 46.9 |
| 2025 | 77.2 | 47.7 |
| 2024 | 73.2 | 66.8 |
| 2023 | 61.9 | 58.3 |
| 2022 | 56.7 | 50.3 |
| 2021 | 68.6 | 49.4 |
| 2020 | 65 | 52.4 |
| 2019 | 66.3 | 53.5 |
| 2018 | 64.4 | 43.5 |
| 2017 | 66.3 | 49.8 |
| 2016 | 66.8 | 54.4 |
| 2015 | 77.4 | 65.7 |
| 2014 | 75.1 | 51.2 |
| 2013 | 75.4 | 55.1 |
| 2012 | 66.5 | 44.5 |
| 2011 | 67.7 | 52.9 |
| 2010 | 55.4 | 46.4 |
| 2009 | 58.4 | 52.2 |
| 2008 | 70.2 | 57.3 |
| 2007 | 69.4 | 47.2 |
| 2006 | 57.5 | 40.4 |
| 2005 | 72.2 | 46.5 |
| 2004 | 64.5 | 47.6 |
| 2003 | 59.8 | 42.8 |
| 2002 | 71 | 52 |
| 2001 | 62.7 | 43.5 |
| 2000 | 55.9 | 38.6 |
| 1999 | 79.9 | 60 |
| 1998 | 71.4 | 44.5 |
| 1997 | 75.7 | 52.2 |
| 1996 | 59 | 47.5 |
| 1995 | 75.6 | 47.6 |
| 1994 | 60.4 | 46 |
| 1993 | 50.8 | 38.4 |
| 1992 | 64 | 40.6 |
| 1991 | 59.5 | 32.3 |
| 1990 | 73.6 | 53.3 |
| 1989 | 68.3 | 41.3 |
| 1988 | 60.7 | 48.6 |
| 1987 | 79.9 | 55.2 |
| 1986 | 81.2 | 64.9 |
| 1985 | 68.7 | 46.8 |
| 1984 | 54.9 | 41.5 |
| 1983 | 75.3 | 50.8 |
| 1982 | 69 | 52 |
| 1981 | 56.5 | 41.3 |
| 1980 | 61.3 | 40.3 |
| 1979 | 72.4 | 55.2 |
| 1978 | 60.5 | 39 |
| 1977 | 63.5 | 47.4 |
| 1976 | 59.3 | 40.3 |
| 1975 | 68.2 | 40.3 |
| 1974 | 71.7 | 54.3 |
| 1973 | 62.9 | 54.3 |
| 1972 | 67.6 | 46.5 |
| 1971 | 81.1 | 62.3 |
| 1970 | 54.9 | 36.1 |
| 1969 | 61.8 | 41.2 |
| 1968 | 63.3 | 43.1 |
| 1967 | 45.2 | 40.7 |
| 1966 | 61.6 | 45.1 |
| 1965 | 65.7 | 47.3 |
| 1964 | 59.2 | 36.9 |
| 1963 | 62.4 | 47.1 |
| 1962 | 56.5 | 46.4 |
| 1961 | 59.3 | 34.4 |
| 1960 | 68.2 | 46.6 |
| 1959 | 79.6 | 63.4 |
| 1958 | 62.4 | 40.2 |
| 1957 | 63.9 | 35.1 |
| 1956 | 71.9 | 45.2 |
| 1955 | 70.3 | 47.2 |
| 1954 | 75.5 | 55.5 |
| 1953 | 77.3 | 47.9 |
| 1952 | 75.7 | 53.5 |
| 1951 | 54.7 | 35.2 |
The month
September 2026 so far averaged 64.3°F in St. Clair County, MI, the warmest 1 to 29 September in the county average since 2025, tied 23rd warmest of 76 (with 1960) (county average from NOAA gridded data, 1951 to 2026).
The month in words
- August 2026 averaged 72.8°F in St. Clair County, MI, the warmest August in the county average since 2021, 14th warmest of 132 (county average from NOAA's monthly county data, 1895 to 2026).
- Tuesday 29 September 2026: a high of 73.4°F averaged over St. Clair County, MI, the warmest 29 September in the county average since 2025, 17th warmest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Tuesday 29 September 2026: a low of 46.9°F averaged over St. Clair County, MI, the coldest 29 September night in the county average since 2018, 36th coldest of 76 (county average from NOAA gridded data, 1951 to 2026).
- Days of the month without a value
- 0
Nearby
Flint, MI 54.7 mi, the nearest city with its own station