September weather in Palmyra, IL
The average temperature in Palmyra in September is 67.1°F (55.1°F–79.2°F). Average precipitation: 3.32 inches.
September is a fall month in Palmyra, and is warmer than the annual average of 53.4°F. Daily temperatures swing about 24.1°F between overnight low and afternoon high. Expect about 8 days with precipitation. Daylight averages about 12h 15m. For travel, September is one of the best months of the year to visit.
Avg High
79.2°F
Avg Low
55.1°F
Precipitation
3.32 in
Daylight
12h 15m
September records in Palmyra
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 105.1°F (1913) | 42.1°F (1967) | 2.75 in (2012) |
| September 2 | 102.9°F (1913) | 41.0°F (1949) | 1.65 in (1910) |
| September 3 | 105.1°F (1913) | 41.0°F (1952) | 1.22 in (1997) |
| September 4 | 102.9°F (1925) | 39.9°F (1974) | 3.77 in (1926) |
| September 5 | 104.0°F (1954) | 43.0°F (1974) | 1.78 in (1914) |
| September 6 | 104.0°F (1954) | 41.0°F (1974) | 1.50 in (1895) |
| September 7 | 102.0°F (1899) | 42.1°F (1956) | 0.85 in (1942) |
| September 8 | 100.9°F (1933) | 37.9°F (1956) | 2.16 in (1970) |
| September 9 | 100.9°F (1925) | 43.0°F (1956) | 1.64 in (1984) |
| September 10 | 100.9°F (1912) | 39.0°F (1969) | 1.38 in (1992) |
| September 11 | 100.9°F (1936) | 36.0°F (1917) | 2.63 in (1963) |
| September 12 | 100.9°F (1897) | 34.0°F (1955) | 2.71 in (2006) |
| September 13 | 100.0°F (1936) | 35.1°F (1902) | 2.42 in (1945) |
| September 14 | 100.9°F (1939) | 35.1°F (1923) | 3.21 in (2008) |
| September 15 | 102.0°F (1939) | 35.1°F (2007) | 1.96 in (1926) |
| September 16 | 99.0°F (1939) | 34.0°F (1916) | 2.40 in (1969) |
| September 17 | 98.1°F (1931) | 34.0°F (1937) | 2.41 in (1969) |
| September 18 | 98.1°F (1925) | 33.1°F (1901) | 2.35 in (1968) |
| September 19 | 96.1°F (1925) | 33.1°F (1901) | 3.96 in (1966) |
| September 20 | 98.1°F (1931) | 34.0°F (1991) | 2.07 in (1966) |
| September 21 | 98.1°F (1940) | 32.0°F (1918) | 2.04 in (1945) |
| September 22 | 97.0°F (1936) | 32.0°F (1913) | 1.63 in (1898) |
| September 23 | 93.9°F (1941) | 30.9°F (1974) | 1.13 in (1993) |
| September 24 | 95.0°F (1935) | 30.9°F (1928) | 1.32 in (1961) |
| September 25 | 93.0°F (1897) | 34.0°F (1950) | 1.88 in (1941) |
| September 26 | 97.0°F (1897) | 28.0°F (1928) | 1.20 in (1910) |
| September 27 | 91.0°F (1911) | 33.1°F (1942) | 1.84 in (1904) |
| September 28 | 97.0°F (1953) | 26.1°F (1942) | 2.27 in (1936) |
| September 29 | 102.9°F (1953) | 30.9°F (1899) | 1.75 in (1906) |
| September 30 | 91.9°F (1897) | 25.0°F (1899) | 1.56 in (1986) |