September weather in Royal Oak, MI
The average temperature in Royal Oak in September is 65.1°F (55.8°F–74.3°F). Average precipitation: 3.09 inches.
September is a fall month in Royal Oak, and is warmer than the annual average of 50.5°F. Daily temperatures swing about 18.5°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
74.3°F
Avg Low
55.8°F
Precipitation
3.09 in
Daylight
12h 16m
September records in Royal Oak
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 98.1°F (1953) | 48.0°F (1948) | 0.90 in (1952) |
| September 2 | 100.0°F (1953) | 45.0°F (1958) | 0.65 in (1959) |
| September 3 | 100.0°F (1953) | 35.1°F (2000) | 1.14 in (2015) |
| September 4 | 91.0°F (1953) | 46.9°F (1974) | 1.12 in (2012) |
| September 5 | 99.0°F (1954) | 46.9°F (1957) | 0.81 in (1968) |
| September 6 | 93.0°F (1978) | 44.1°F (1962) | 0.49 in (1958) |
| September 7 | 91.9°F (1985) | 45.0°F (2025) | 0.94 in (2020) |
| September 8 | 97.0°F (1978) | 44.1°F (1956) | 1.12 in (2020) |
| September 9 | 93.0°F (2002) | 44.1°F (1956) | 1.41 in (2001) |
| September 10 | 95.0°F (1983) | 35.1°F (2000) | 1.47 in (2011) |
| September 11 | 93.0°F (1952) | 44.1°F (1958) | 0.86 in (2007) |
| September 12 | 96.1°F (1952) | 44.1°F (1953) | 0.80 in (1974) |
| September 13 | 96.1°F (1952) | 42.1°F (1964) | 2.33 in (2008) |
| September 14 | 90.0°F (2021) | 39.0°F (1975) | 0.98 in (2008) |
| September 15 | 93.0°F (1991) | 43.0°F (1953) | 1.11 in (1957) |
| September 16 | 89.1°F (1955) | 41.0°F (1959) | 0.95 in (2005) |
| September 17 | 93.0°F (1955) | 34.0°F (2000) | 0.62 in (1958) |
| September 18 | 91.9°F (1955) | 41.0°F (1959) | 1.92 in (2025) |
| September 19 | 93.0°F (1955) | 39.0°F (2020) | 1.16 in (2001) |
| September 20 | 90.0°F (1978) | 36.0°F (1956) | 0.77 in (2018) |
| September 21 | 90.0°F (1970) | 36.0°F (1956) | 0.92 in (1967) |
| September 22 | 87.1°F (1980) | 39.9°F (1974) | 1.20 in (2003) |
| September 23 | 90.0°F (2017) | 34.0°F (1974) | 1.28 in (1961) |
| September 24 | 88.0°F (2017) | 33.1°F (2000) | 0.63 in (2025) |
| September 25 | 89.1°F (2017) | 39.0°F (1976) | 1.69 in (2018) |
| September 26 | 91.9°F (1998) | 39.9°F (1966) | 0.69 in (2011) |
| September 27 | 87.1°F (1999) | 36.0°F (1957) | 0.56 in (2002) |
| September 28 | 84.9°F (1959) | 35.1°F (1957) | 2.13 in (1959) |
| September 29 | 89.1°F (1953) | 35.1°F (1951) | 4.07 in (2016) |
| September 30 | 82.0°F (1950) | 35.1°F (1993) | 0.74 in (2016) |