September weather in Marlborough, MA
The average temperature in Marlborough in September is 63.5°F (49.4°F–77.5°F). Average precipitation: 3.89 inches.
September is a fall month in Marlborough, and is warmer than the annual average of 49.9°F. Daily temperatures swing about 28.1°F between overnight low and afternoon high. Expect about 10 days with precipitation. Daylight averages about 12h 16m. For travel, September is a comfortable month to visit.
Avg High
77.5°F
Avg Low
49.4°F
Precipitation
3.89 in
Daylight
12h 16m
September records in Marlborough
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 88.0°F (1993) | 39.0°F (1976) | 0.82 in (1967) |
| September 2 | 93.0°F (2015) | 41.0°F (1964) | 0.39 in (2003) |
| September 3 | 93.9°F (1973) | 39.0°F (1970) | 0.52 in (1976) |
| September 4 | 96.1°F (1999) | 39.9°F (1987) | 1.63 in (1974) |
| September 5 | 91.9°F (1999) | 39.0°F (1963) | 1.91 in (1988) |
| September 6 | 91.0°F (1983) | 37.9°F (2000) | 0.52 in (2011) |
| September 7 | 93.9°F (1983) | 33.1°F (1984) | 5.18 in (2008) |
| September 8 | 97.0°F (2015) | 35.1°F (1984) | 1.74 in (1969) |
| September 9 | 100.0°F (2015) | 36.0°F (1980) | 0.94 in (1969) |
| September 10 | 97.0°F (2002) | 37.9°F (1973) | 0.80 in (1985) |
| September 11 | 93.9°F (1989) | 35.1°F (1995) | 3.85 in (1999) |
| September 12 | 98.1°F (1983) | 34.0°F (1977) | 1.23 in (2007) |
| September 13 | 90.0°F (1982) | 35.1°F (1977) | 1.43 in (2013) |
| September 14 | 88.0°F (2005) | 30.0°F (1963) | 1.22 in (1987) |
| September 15 | 90.0°F (2016) | 32.0°F (1963) | 1.30 in (1989) |
| September 16 | 88.0°F (1993) | 30.0°F (1964) | 1.90 in (2003) |
| September 17 | 90.0°F (1991) | 32.0°F (1986) | 3.17 in (1999) |
| September 18 | 91.0°F (2015) | 33.1°F (1984) | 2.34 in (1996) |
| September 19 | 90.0°F (2015) | 34.0°F (1984) | 1.80 in (2004) |
| September 20 | 91.0°F (1983) | 27.0°F (1964) | 1.02 in (1989) |
| September 21 | 95.0°F (1983) | 28.0°F (1979) | 1.64 in (1977) |
| September 22 | 91.9°F (1978) | 30.9°F (1973) | 1.87 in (1974) |
| September 23 | 90.0°F (1980) | 32.0°F (1991) | 2.22 in (1981) |
| September 24 | 82.9°F (1984) | 28.0°F (1963) | 2.06 in (1994) |
| September 25 | 91.0°F (1984) | 28.0°F (1963) | 1.45 in (1991) |
| September 26 | 88.0°F (2007) | 30.0°F (1980) | 2.21 in (1991) |
| September 27 | 93.9°F (2007) | 30.0°F (1966) | 2.33 in (2008) |
| September 28 | 86.0°F (1998) | 30.0°F (1978) | 1.66 in (1993) |
| September 29 | 89.1°F (2014) | 26.1°F (2000) | 2.71 in (1974) |
| September 30 | 84.0°F (1987) | 26.1°F (2000) | 0.98 in (1967) |