September weather in Blanco, TX
The average temperature in Blanco in September is 76.0°F (64.0°F–88.0°F). Average precipitation: 3.72 inches.
September is a fall month in Blanco, and is warmer than the annual average of 65.5°F. Daily temperatures swing about 24°F between overnight low and afternoon high. Expect about 6 days with precipitation. Daylight averages about 12h 10m. For travel, September is hot.
Avg High
88.0°F
Avg Low
64.0°F
Precipitation
3.72 in
Daylight
12h 10m
September records in Blanco
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 106.0°F (1927) | 48.9°F (1915) | 3.31 in (1953) |
| September 2 | 106.0°F (1939) | 46.9°F (1915) | 1.74 in (1978) |
| September 3 | 104.0°F (2000) | 52.0°F (1915) | 1.70 in (1943) |
| September 4 | 106.0°F (2000) | 52.0°F (1974) | 1.82 in (1905) |
| September 5 | 108.0°F (2000) | 48.0°F (1974) | 1.65 in (2007) |
| September 6 | 109.9°F (2000) | 48.0°F (1974) | 6.75 in (1986) |
| September 7 | 102.9°F (1922) | 46.9°F (2017) | 3.41 in (1980) |
| September 8 | 102.0°F (1930) | 48.0°F (2017) | 4.50 in (2010) |
| September 9 | 102.9°F (1940) | 42.1°F (1915) | 2.40 in (2010) |
| September 10 | 104.0°F (1940) | 50.0°F (1957) | 5.80 in (1921) |
| September 11 | 106.0°F (1912) | 50.0°F (1907) | 17.47 in (1952) |
| September 12 | 102.0°F (1964) | 46.0°F (1959) | 4.36 in (1961) |
| September 13 | 102.0°F (1930) | 46.0°F (1940) | 1.62 in (2014) |
| September 14 | 100.0°F (1911) | 46.0°F (1940) | 4.63 in (2012) |
| September 15 | 100.9°F (1931) | 46.0°F (1945) | 2.70 in (1919) |
| September 16 | 100.0°F (1899) | 48.0°F (1989) | 1.95 in (1936) |
| September 17 | 100.9°F (1925) | 46.0°F (1979) | 2.45 in (1964) |
| September 18 | 102.9°F (1927) | 41.0°F (1903) | 1.65 in (2010) |
| September 19 | 100.9°F (1942) | 42.1°F (1981) | 0.96 in (1983) |
| September 20 | 100.0°F (1933) | 44.1°F (1901) | 1.79 in (1918) |
| September 21 | 102.9°F (1956) | 44.1°F (1901) | 1.72 in (1976) |
| September 22 | 102.9°F (1926) | 37.9°F (1983) | 3.97 in (1957) |
| September 23 | 99.0°F (1942) | 44.1°F (1994) | 3.42 in (1965) |
| September 24 | 102.0°F (1942) | 43.0°F (1999) | 0.82 in (1972) |
| September 25 | 102.0°F (1942) | 39.9°F (1989) | 1.52 in (1935) |
| September 26 | 102.9°F (2005) | 39.9°F (1989) | 8.00 in (1896) |
| September 27 | 104.0°F (2005) | 41.0°F (2000) | 3.17 in (1973) |
| September 28 | 102.9°F (2005) | 37.9°F (1908) | 2.00 in (2017) |
| September 29 | 100.9°F (2005) | 37.9°F (1908) | 2.12 in (2013) |
| September 30 | 99.0°F (1938) | 39.0°F (1908) | 9.99 in (2020) |