September weather in Merriam Woods, MO
The average temperature in Merriam Woods in September is 70.8°F (57.6°F–83.9°F). Average precipitation: 4.13 inches.
September is a fall month in Merriam Woods, and is warmer than the annual average of 58.2°F. Daily temperatures swing about 26.3°F between overnight low and afternoon high. Expect about 7 days with precipitation. Daylight averages about 12h 13m. For travel, September is a comfortable month to visit.
Avg High
83.9°F
Avg Low
57.6°F
Precipitation
4.13 in
Daylight
12h 13m
September records in Merriam Woods
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 105.1°F (2000) | 43.0°F (1967) | 1.86 in (1965) |
| September 2 | 104.0°F (2000) | 43.0°F (1955) | 2.26 in (2003) |
| September 3 | 104.0°F (1954) | 46.0°F (1974) | 2.73 in (2008) |
| September 4 | 106.0°F (1954) | 43.0°F (1974) | 1.82 in (1959) |
| September 5 | 105.1°F (1954) | 43.0°F (1974) | 1.24 in (1977) |
| September 6 | 102.0°F (1954) | 45.0°F (1988) | 1.26 in (2007) |
| September 7 | 104.0°F (1990) | 41.0°F (1988) | 2.07 in (1963) |
| September 8 | 104.0°F (1990) | 39.0°F (1956) | 1.65 in (1992) |
| September 9 | 99.0°F (1960) | 41.0°F (1988) | 2.40 in (1992) |
| September 10 | 99.0°F (1980) | 42.1°F (1976) | 1.50 in (1989) |
| September 11 | 98.1°F (1953) | 42.1°F (1959) | 2.19 in (1975) |
| September 12 | 100.0°F (1953) | 42.1°F (1955) | 1.42 in (1929) |
| September 13 | 97.0°F (1980) | 41.0°F (1960) | 1.01 in (2003) |
| September 14 | 97.0°F (1980) | 44.1°F (1959) | 2.80 in (2008) |
| September 15 | 100.0°F (1954) | 37.0°F (1961) | 3.30 in (2005) |
| September 16 | 100.9°F (1954) | 36.0°F (1961) | 1.39 in (1996) |
| September 17 | 100.9°F (1954) | 39.0°F (1961) | 3.08 in (2016) |
| September 18 | 100.9°F (1953) | 35.1°F (1981) | 2.12 in (2011) |
| September 19 | 97.0°F (1953) | 34.0°F (1981) | 1.47 in (1960) |
| September 20 | 100.0°F (1954) | 36.0°F (1981) | 2.29 in (1924) |
| September 21 | 100.9°F (1954) | 35.1°F (1983) | 2.60 in (2021) |
| September 22 | 97.0°F (1954) | 34.0°F (1983) | 1.96 in (2009) |
| September 23 | 98.1°F (1971) | 32.0°F (1995) | 3.50 in (1970) |
| September 24 | 93.9°F (2017) | 32.0°F (1989) | 2.56 in (1997) |
| September 25 | 93.9°F (2017) | 35.1°F (1983) | 4.74 in (1941) |
| September 26 | 93.0°F (1953) | 36.0°F (1989) | 3.65 in (1996) |
| September 27 | 96.1°F (1953) | 35.1°F (1985) | 1.63 in (1935) |
| September 28 | 97.0°F (1954) | 34.0°F (1985) | 1.13 in (1936) |
| September 29 | 102.0°F (1953) | 34.0°F (1967) | 2.46 in (1977) |
| September 30 | 100.0°F (1953) | 30.0°F (1963) | 4.43 in (1954) |