September weather in Lamar, MO
The average temperature in Lamar in September is 68.9°F (57.3°F–80.4°F). Average precipitation: 4.78 inches.
September is a fall month in Lamar, and is warmer than the annual average of 55.9°F. Daily temperatures swing about 23.1°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 14m. For travel, September is a comfortable month to visit.
Avg High
80.4°F
Avg Low
57.3°F
Precipitation
4.78 in
Daylight
12h 14m
September records in Lamar
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 105.1°F (2000) | 42.1°F (1949) | 2.20 in (2003) |
| September 2 | 105.1°F (2000) | 43.0°F (1949) | 2.90 in (2010) |
| September 3 | 105.1°F (1939) | 43.0°F (1952) | 2.74 in (1894) |
| September 4 | 105.1°F (1913) | 42.1°F (1974) | 2.90 in (1961) |
| September 5 | 104.0°F (1913) | 46.0°F (1974) | 4.00 in (1926) |
| September 6 | 105.1°F (1936) | 44.1°F (1988) | 3.81 in (1971) |
| September 7 | 105.1°F (1947) | 43.0°F (1988) | 4.42 in (1915) |
| September 8 | 102.9°F (1939) | 44.1°F (1898) | 3.50 in (1930) |
| September 9 | 102.9°F (1939) | 44.1°F (1902) | 4.10 in (1992) |
| September 10 | 104.0°F (1936) | 44.1°F (1929) | 4.15 in (1951) |
| September 11 | 104.0°F (1909) | 37.9°F (1940) | 4.80 in (1986) |
| September 12 | 102.0°F (1909) | 37.9°F (1940) | 1.70 in (2000) |
| September 13 | 100.9°F (1939) | 36.0°F (1902) | 3.56 in (1921) |
| September 14 | 102.0°F (1939) | 39.9°F (1959) | 5.50 in (2008) |
| September 15 | 102.0°F (1939) | 37.9°F (1916) | 2.85 in (2005) |
| September 16 | 100.0°F (1939) | 41.0°F (1916) | 4.62 in (1969) |
| September 17 | 102.0°F (1931) | 36.0°F (1903) | 1.97 in (2016) |
| September 18 | 102.0°F (1931) | 37.9°F (1901) | 3.28 in (1986) |
| September 19 | 98.1°F (1893) | 34.0°F (1910) | 3.10 in (1988) |
| September 20 | 98.1°F (1954) | 35.1°F (1918) | 2.30 in (1924) |
| September 21 | 100.0°F (1954) | 34.0°F (1918) | 3.58 in (1902) |
| September 22 | 100.0°F (1937) | 33.1°F (1995) | 4.90 in (1925) |
| September 23 | 96.1°F (1921) | 33.1°F (1995) | 2.53 in (2019) |
| September 24 | 95.0°F (1939) | 32.0°F (1989) | 2.85 in (1993) |
| September 25 | 97.0°F (1939) | 32.0°F (1989) | 7.30 in (1993) |
| September 26 | 100.0°F (1938) | 32.0°F (1940) | 3.25 in (1996) |
| September 27 | 97.0°F (1897) | 25.0°F (1942) | 4.00 in (1936) |
| September 28 | 97.0°F (1897) | 25.0°F (1942) | 1.95 in (1900) |
| September 29 | 104.0°F (1953) | 28.9°F (1916) | 1.35 in (1975) |
| September 30 | 100.0°F (1938) | 33.1°F (1895) | 6.42 in (1986) |