September weather in Pendleton, OR
The average temperature in Pendleton in September is 63.4°F (46.5°F–80.4°F). Average precipitation: inches.
September is a fall month in Pendleton, and is warmer than the annual average of 52.9°F. Daily temperatures swing about 33.9°F between overnight low and afternoon high. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
80.4°F
Avg Low
46.5°F
Precipitation
in
Daylight
12h 18m
September records in Pendleton
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 102.0°F (1893) | 36.0°F (1892) | 0.52 in (1936) |
| September 2 | 100.9°F (1998) | 37.9°F (1913) | 0.15 in (1895) |
| September 3 | 104.0°F (1930) | 30.9°F (1892) | 0.64 in (2013) |
| September 4 | 100.0°F (1934) | 32.0°F (1892) | 0.47 in (2000) |
| September 5 | 100.0°F (2006) | 36.0°F (1892) | 1.23 in (1899) |
| September 6 | 100.0°F (1955) | 34.0°F (1895) | 0.52 in (2013) |
| September 7 | 100.0°F (1932) | 32.0°F (1910) | 0.35 in (1897) |
| September 8 | 97.0°F (1935) | 34.0°F (1910) | 0.65 in (1924) |
| September 9 | 100.0°F (1935) | 32.0°F (1896) | 0.52 in (1920) |
| September 10 | 96.1°F (1899) | 30.0°F (1895) | 0.31 in (2005) |
| September 11 | 100.0°F (1899) | 32.0°F (1904) | 0.74 in (1927) |
| September 12 | 96.1°F (2011) | 25.0°F (1921) | 0.89 in (1893) |
| September 13 | 96.1°F (1929) | 28.0°F (1921) | 0.60 in (1905) |
| September 14 | 93.9°F (1932) | 30.9°F (1916) | 0.65 in (1906) |
| September 15 | 96.1°F (1909) | 32.0°F (1897) | 0.23 in (1935) |
| September 16 | 100.0°F (2013) | 30.9°F (1897) | 0.45 in (2004) |
| September 17 | 97.0°F (1898) | 32.0°F (1896) | 0.58 in (2013) |
| September 18 | 96.1°F (1898) | 28.0°F (1911) | 0.50 in (2004) |
| September 19 | 95.0°F (1906) | 33.1°F (1942) | 0.68 in (1902) |
| September 20 | 96.1°F (1936) | 30.9°F (1912) | 0.40 in (2010) |
| September 21 | 95.0°F (1935) | 27.0°F (1895) | 0.43 in (1910) |
| September 22 | 93.9°F (2011) | 30.0°F (1993) | 0.49 in (1920) |
| September 23 | 93.9°F (1905) | 28.0°F (1911) | 0.73 in (1917) |
| September 24 | 95.0°F (1899) | 21.0°F (1926) | 0.45 in (1992) |
| September 25 | 97.0°F (1952) | 21.0°F (1926) | 0.45 in (1923) |
| September 26 | 95.0°F (1997) | 24.1°F (1908) | 0.73 in (1901) |
| September 27 | 91.0°F (2016) | 27.0°F (1911) | 0.70 in (1905) |
| September 28 | 91.9°F (1918) | 27.0°F (1911) | 0.55 in (1927) |
| September 29 | 93.0°F (1932) | 28.0°F (1911) | 0.40 in (1930) |
| September 30 | 91.0°F (1935) | 27.0°F (1911) | 0.17 in (1918) |