September weather in Mason, MI
The average temperature in Mason in September is 63.6°F (51.8°F–75.5°F). Average precipitation: 3.17 inches.
September is a fall month in Mason, and is warmer than the annual average of 49.2°F. Daily temperatures swing about 23.7°F between overnight low and afternoon high. Expect about 9 days with precipitation. Daylight averages about 12h 16m. For travel, September is one of the best months of the year to visit.
Avg High
75.5°F
Avg Low
51.8°F
Precipitation
3.17 in
Daylight
12h 16m
September records in Mason
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 91.0°F (1960) | 43.0°F (1963) | 1.17 in (1969) |
| September 2 | 91.9°F (1973) | 37.9°F (1958) | 0.67 in (1959) |
| September 3 | 93.0°F (1973) | 42.1°F (1974) | 0.52 in (1993) |
| September 4 | 90.0°F (1973) | 37.0°F (1997) | 1.18 in (1981) |
| September 5 | 91.0°F (1999) | 36.0°F (1997) | 0.71 in (1965) |
| September 6 | 91.0°F (1999) | 32.0°F (1962) | 0.74 in (1983) |
| September 7 | 93.0°F (1960) | 37.0°F (1986) | 1.39 in (1990) |
| September 8 | 93.9°F (1960) | 37.0°F (1986) | 0.73 in (2007) |
| September 9 | 93.9°F (2002) | 37.9°F (1979) | 1.10 in (2008) |
| September 10 | 91.9°F (2002) | 39.9°F (1995) | 2.55 in (1997) |
| September 11 | 91.0°F (1983) | 36.0°F (1995) | 0.62 in (2007) |
| September 12 | 89.1°F (2005) | 36.0°F (1958) | 1.09 in (1963) |
| September 13 | 91.0°F (2005) | 32.0°F (1964) | 0.89 in (1977) |
| September 14 | 91.0°F (1982) | 32.0°F (1975) | 4.50 in (2008) |
| September 15 | 88.0°F (2002) | 37.9°F (1964) | 2.60 in (2008) |
| September 16 | 89.1°F (1991) | 34.0°F (1966) | 1.03 in (2005) |
| September 17 | 84.9°F (1965) | 30.9°F (1959) | 1.26 in (1958) |
| September 18 | 86.0°F (1965) | 35.1°F (1990) | 1.30 in (1972) |
| September 19 | 86.0°F (1965) | 33.1°F (1982) | 1.75 in (1983) |
| September 20 | 87.1°F (2002) | 35.1°F (1962) | 1.66 in (1968) |
| September 21 | 88.0°F (1998) | 28.9°F (1991) | 1.15 in (1993) |
| September 22 | 86.0°F (1970) | 30.9°F (1991) | 1.52 in (1981) |
| September 23 | 86.0°F (1984) | 28.0°F (1995) | 1.50 in (1988) |
| September 24 | 87.1°F (2004) | 28.9°F (1976) | 0.96 in (1961) |
| September 25 | 89.1°F (2007) | 32.0°F (1966) | 1.55 in (1982) |
| September 26 | 89.1°F (2007) | 30.9°F (1966) | 1.01 in (1984) |
| September 27 | 90.0°F (1998) | 28.9°F (1957) | 1.08 in (1982) |
| September 28 | 84.9°F (1998) | 26.1°F (1991) | 0.96 in (1973) |
| September 29 | 87.1°F (2004) | 26.1°F (1991) | 0.89 in (1999) |
| September 30 | 82.0°F (1979) | 30.9°F (1962) | 1.47 in (1986) |