September weather in Viola, IL
The average temperature in Viola in September is 65.1°F (53.2°F–76.9°F). Average precipitation: 3.73 inches.
September is a fall month in Viola, and is warmer than the annual average of 50°F. Daily temperatures swing about 23.7°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 16m. For travel, September is one of the best months of the year to visit.
Avg High
76.9°F
Avg Low
53.2°F
Precipitation
3.73 in
Daylight
12h 16m
September records in Viola
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (1953) | 37.9°F (1967) | 3.06 in (1926) |
| September 2 | 102.0°F (1953) | 42.1°F (1946) | 3.33 in (1934) |
| September 3 | 99.0°F (1913) | 41.0°F (1974) | 1.80 in (1926) |
| September 4 | 98.1°F (1925) | 37.0°F (1974) | 1.20 in (2014) |
| September 5 | 97.0°F (1912) | 37.9°F (1957) | 2.75 in (1929) |
| September 6 | 102.0°F (1922) | 41.0°F (1956) | 2.34 in (1989) |
| September 7 | 102.0°F (1922) | 36.0°F (1956) | 2.13 in (1917) |
| September 8 | 100.9°F (1922) | 39.9°F (2024) | 1.90 in (2016) |
| September 9 | 99.0°F (1933) | 39.0°F (1924) | 2.00 in (1992) |
| September 10 | 99.0°F (2013) | 39.0°F (1967) | 2.60 in (1915) |
| September 11 | 97.0°F (2013) | 36.0°F (1917) | 2.32 in (1925) |
| September 12 | 96.1°F (1927) | 34.0°F (1955) | 1.53 in (2020) |
| September 13 | 97.0°F (1927) | 19.0°F (1938) | 5.22 in (1961) |
| September 14 | 98.1°F (1939) | 30.9°F (1923) | 4.15 in (2008) |
| September 15 | 99.0°F (1939) | 36.0°F (1923) | 1.90 in (1926) |
| September 16 | 93.0°F (1931) | 35.1°F (1916) | 2.03 in (1936) |
| September 17 | 98.1°F (1927) | 37.9°F (1943) | 1.75 in (1970) |
| September 18 | 95.0°F (1955) | 32.0°F (1929) | 1.25 in (1927) |
| September 19 | 93.9°F (1948) | 36.0°F (1901) | 2.35 in (2010) |
| September 20 | 93.9°F (1931) | 28.0°F (1956) | 1.40 in (1965) |
| September 21 | 93.9°F (1940) | 35.1°F (1918) | 4.25 in (1947) |
| September 22 | 93.9°F (1930) | 30.0°F (1974) | 2.39 in (1970) |
| September 23 | 91.0°F (2017) | 33.1°F (1974) | 2.28 in (1902) |
| September 24 | 93.0°F (1920) | 30.9°F (1989) | 1.15 in (1970) |
| September 25 | 91.9°F (1920) | 32.0°F (1907) | 3.51 in (1911) |
| September 26 | 89.1°F (2017) | 28.0°F (1926) | 2.59 in (1933) |
| September 27 | 91.0°F (1905) | 30.9°F (1942) | 1.55 in (1907) |
| September 28 | 93.0°F (1953) | 24.1°F (1942) | 3.40 in (1999) |
| September 29 | 97.0°F (1953) | 28.9°F (1908) | 2.25 in (1906) |
| September 30 | 91.9°F (1952) | 30.0°F (1924) | 2.75 in (1919) |