September weather in Modesto, IL
The average temperature in Modesto in September is 69.1°F (58.2°F–79.9°F). Average precipitation: 3.42 inches.
September is a fall month in Modesto, and is warmer than the annual average of 54.8°F. Daily temperatures swing about 21.7°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 15m. For travel, September is one of the best months of the year to visit.
Avg High
79.9°F
Avg Low
58.2°F
Precipitation
3.42 in
Daylight
12h 15m
September records in Modesto
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 99.0°F (1953) | 43.0°F (1949) | 4.38 in (2003) |
| September 2 | 99.0°F (1953) | 45.0°F (1949) | 1.70 in (2010) |
| September 3 | 95.0°F (1953) | 39.0°F (1952) | 3.10 in (2010) |
| September 4 | 100.9°F (1954) | 41.0°F (1974) | 0.85 in (1953) |
| September 5 | 100.9°F (1954) | 43.0°F (1974) | 1.88 in (2008) |
| September 6 | 100.0°F (1954) | 41.0°F (1988) | 0.68 in (1953) |
| September 7 | 96.1°F (1960) | 39.9°F (1956) | 0.89 in (2001) |
| September 8 | 96.1°F (1960) | 37.0°F (1986) | 0.89 in (1970) |
| September 9 | 98.1°F (1955) | 44.1°F (1949) | 2.65 in (1984) |
| September 10 | 97.0°F (1964) | 39.9°F (1969) | 1.35 in (1991) |
| September 11 | 95.0°F (1952) | 42.1°F (1967) | 1.45 in (1975) |
| September 12 | 97.0°F (1991) | 41.0°F (1955) | 2.05 in (2006) |
| September 13 | 95.0°F (1956) | 37.0°F (1964) | 3.28 in (1945) |
| September 14 | 95.0°F (1971) | 39.0°F (1974) | 2.02 in (1961) |
| September 15 | 95.0°F (1971) | 39.0°F (1979) | 3.55 in (2008) |
| September 16 | 93.9°F (1954) | 37.9°F (1984) | 3.03 in (1965) |
| September 17 | 93.0°F (1954) | 42.1°F (1984) | 2.38 in (1969) |
| September 18 | 95.0°F (1983) | 39.0°F (1973) | 2.12 in (1968) |
| September 19 | 95.0°F (1972) | 36.0°F (1991) | 4.75 in (1966) |
| September 20 | 95.0°F (1948) | 33.1°F (1991) | 1.09 in (2005) |
| September 21 | 93.9°F (1955) | 36.0°F (1991) | 1.99 in (1947) |
| September 22 | 93.0°F (1956) | 34.0°F (1974) | 1.71 in (1970) |
| September 23 | 90.0°F (1956) | 30.0°F (1974) | 1.22 in (1993) |
| September 24 | 88.0°F (1958) | 32.0°F (1989) | 1.37 in (1961) |
| September 25 | 90.0°F (1999) | 35.1°F (1950) | 1.79 in (1941) |
| September 26 | 90.0°F (1956) | 33.1°F (1984) | 1.02 in (1994) |
| September 27 | 89.1°F (1998) | 35.1°F (1985) | 1.55 in (1959) |
| September 28 | 96.1°F (1953) | 35.1°F (1951) | 0.98 in (1944) |
| September 29 | 100.9°F (1953) | 34.0°F (1949) | 1.65 in (1987) |
| September 30 | 91.9°F (1952) | 32.0°F (1984) | 2.01 in (1986) |