September weather in New Milford, IL
The average temperature in New Milford in September is 64.4°F (53.5°F–75.3°F). Average precipitation: 3.62 inches.
September is a fall month in New Milford, and is warmer than the annual average of 49.4°F. Daily temperatures swing about 21.8°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 16m. For travel, September is one of the best months of the year to visit.
Avg High
75.3°F
Avg Low
53.5°F
Precipitation
3.62 in
Daylight
12h 16m
September records in New Milford
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (1953) | 42.1°F (1967) | 1.72 in (2018) |
| September 2 | 100.9°F (1953) | 42.1°F (1967) | 1.63 in (1970) |
| September 3 | 96.1°F (2012) | 45.0°F (1974) | 1.04 in (2018) |
| September 4 | 96.1°F (2012) | 39.0°F (1974) | 2.38 in (2008) |
| September 5 | 95.0°F (1954) | 44.1°F (1962) | 0.75 in (1969) |
| September 6 | 96.1°F (1954) | 39.0°F (1988) | 0.77 in (2020) |
| September 7 | 95.0°F (1959) | 37.0°F (1986) | 2.20 in (1980) |
| September 8 | 95.0°F (1978) | 37.0°F (1986) | 2.06 in (2020) |
| September 9 | 97.0°F (1955) | 42.1°F (1975) | 1.89 in (2001) |
| September 10 | 96.1°F (2013) | 41.0°F (1976) | 1.11 in (1994) |
| September 11 | 91.0°F (1952) | 39.9°F (1993) | 4.46 in (2022) |
| September 12 | 91.0°F (1952) | 36.0°F (1975) | 2.92 in (2019) |
| September 13 | 91.9°F (2005) | 32.0°F (1975) | 5.56 in (1961) |
| September 14 | 91.9°F (1971) | 35.1°F (1975) | 1.50 in (1998) |
| September 15 | 89.1°F (1955) | 35.1°F (2007) | 1.10 in (2013) |
| September 16 | 89.1°F (1955) | 35.1°F (1984) | 0.96 in (1987) |
| September 17 | 93.0°F (1988) | 37.9°F (1999) | 2.21 in (1970) |
| September 18 | 91.0°F (1955) | 35.1°F (1959) | 2.53 in (1960) |
| September 19 | 93.0°F (2021) | 37.9°F (2012) | 2.38 in (1968) |
| September 20 | 91.0°F (2017) | 30.0°F (1956) | 2.40 in (2001) |
| September 21 | 91.9°F (2010) | 34.0°F (1995) | 2.54 in (1973) |
| September 22 | 91.9°F (2017) | 30.0°F (1976) | 3.05 in (2000) |
| September 23 | 93.0°F (2017) | 28.9°F (1974) | 0.66 in (1970) |
| September 24 | 91.9°F (2007) | 28.0°F (1976) | 3.26 in (1986) |
| September 25 | 91.9°F (2017) | 35.1°F (1989) | 1.93 in (1993) |
| September 26 | 90.0°F (1998) | 32.0°F (1975) | 3.93 in (2011) |
| September 27 | 90.0°F (2021) | 30.0°F (1991) | 2.00 in (1999) |
| September 28 | 91.0°F (1952) | 32.0°F (1991) | 2.15 in (1999) |
| September 29 | 93.9°F (1953) | 28.9°F (1984) | 1.21 in (1986) |
| September 30 | 91.9°F (1971) | 27.0°F (1984) | 0.92 in (1977) |