September weather in Mount Pleasant, MI
The average temperature in Mount Pleasant in September is 62.6°F (51.3°F–74.0°F). Average precipitation: 2.82 inches.
September is a fall month in Mount Pleasant, and is warmer than the annual average of 47.8°F. Daily temperatures swing about 22.7°F between overnight low and afternoon high. Daylight averages about 12h 17m. For travel, September is one of the best months of the year to visit.
Avg High
74.0°F
Avg Low
51.3°F
Precipitation
2.82 in
Daylight
12h 17m
September records in Mount Pleasant
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 99.0°F (1953) | 35.1°F (1896) | 2.86 in (1945) |
| September 2 | 97.0°F (1953) | 35.1°F (1909) | 1.95 in (1984) |
| September 3 | 95.0°F (1953) | 34.0°F (1946) | 1.14 in (1966) |
| September 4 | 93.0°F (1948) | 34.0°F (1896) | 1.35 in (2011) |
| September 5 | 93.0°F (1933) | 37.0°F (1974) | 1.17 in (1988) |
| September 6 | 91.9°F (1912) | 34.0°F (1962) | 1.71 in (1985) |
| September 7 | 93.9°F (1960) | 37.9°F (1909) | 2.00 in (2020) |
| September 8 | 98.1°F (1933) | 37.0°F (2025) | 1.99 in (2016) |
| September 9 | 97.0°F (1931) | 35.1°F (1949) | 1.36 in (1942) |
| September 10 | 97.0°F (1931) | 33.1°F (1917) | 1.80 in (1922) |
| September 11 | 98.1°F (1931) | 33.1°F (1917) | 9.35 in (1986) |
| September 12 | 95.0°F (1931) | 33.1°F (1955) | 1.88 in (1939) |
| September 13 | 91.9°F (1931) | 34.0°F (1923) | 1.38 in (2021) |
| September 14 | 95.0°F (1939) | 32.0°F (1963) | 1.56 in (1931) |
| September 15 | 95.0°F (1939) | 32.0°F (1964) | 0.94 in (1990) |
| September 16 | 91.9°F (1927) | 32.0°F (1959) | 0.95 in (1929) |
| September 17 | 89.1°F (1955) | 32.0°F (1901) | 1.34 in (1980) |
| September 18 | 93.0°F (1908) | 30.0°F (1901) | 1.88 in (1987) |
| September 19 | 90.0°F (1909) | 28.9°F (1901) | 1.77 in (1977) |
| September 20 | 90.0°F (2002) | 30.9°F (1956) | 2.78 in (1906) |
| September 21 | 88.0°F (1908) | 30.0°F (1962) | 2.27 in (1947) |
| September 22 | 93.9°F (1908) | 27.0°F (1974) | 1.62 in (1951) |
| September 23 | 97.0°F (2017) | 27.0°F (1974) | 1.80 in (1945) |
| September 24 | 95.0°F (2017) | 28.9°F (1950) | 1.92 in (1926) |
| September 25 | 95.0°F (2017) | 28.9°F (1976) | 1.54 in (1933) |
| September 26 | 91.9°F (2017) | 28.0°F (1926) | 1.61 in (1961) |
| September 27 | 93.0°F (2017) | 28.0°F (1957) | 1.37 in (1967) |
| September 28 | 93.0°F (1901) | 28.0°F (1942) | 2.99 in (1945) |
| September 29 | 86.0°F (1898) | 28.0°F (1942) | 1.54 in (1963) |
| September 30 | 87.1°F (1897) | 28.9°F (1945) | 2.08 in (1921) |