September weather in Prineville, OR
The average temperature in Prineville in September is 60.5°F (41.9°F–79.0°F). Average precipitation: 0.31 inches.
September is a fall month in Prineville, and is warmer than the annual average of 49.4°F. Daily temperatures swing about 37.1°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 12h 17m. For travel, September is a comfortable month to visit.
Avg High
79.0°F
Avg Low
41.9°F
Precipitation
0.31 in
Daylight
12h 17m
September records in Prineville
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 107.1°F (1998) | 27.0°F (1933) | 1.53 in (1901) |
| September 2 | 100.9°F (1998) | 25.0°F (1956) | 0.84 in (1909) |
| September 3 | 104.0°F (2022) | 24.1°F (1956) | 0.15 in (1925) |
| September 4 | 98.1°F (2020) | 26.1°F (1943) | 0.30 in (1919) |
| September 5 | 100.0°F (1955) | 25.0°F (1969) | 0.56 in (1897) |
| September 6 | 98.1°F (1998) | 27.0°F (1929) | 0.31 in (2019) |
| September 7 | 95.0°F (1944) | 21.9°F (1929) | 0.75 in (1924) |
| September 8 | 97.0°F (1981) | 24.1°F (1929) | 0.46 in (2003) |
| September 9 | 97.0°F (1981) | 23.0°F (1959) | 0.55 in (1927) |
| September 10 | 99.0°F (1990) | 25.0°F (1970) | 0.50 in (1927) |
| September 11 | 95.0°F (2011) | 21.0°F (1902) | 0.50 in (1962) |
| September 12 | 95.0°F (1959) | 21.9°F (1902) | 0.46 in (1905) |
| September 13 | 93.9°F (1995) | 21.0°F (1970) | 0.63 in (1939) |
| September 14 | 96.1°F (1995) | 18.0°F (1970) | 0.27 in (1996) |
| September 15 | 97.0°F (1995) | 19.9°F (1970) | 0.64 in (1963) |
| September 16 | 97.0°F (1981) | 19.9°F (1936) | 0.38 in (1986) |
| September 17 | 98.1°F (1898) | 14.0°F (1965) | 0.35 in (1954) |
| September 18 | 93.0°F (1918) | 19.0°F (1965) | 0.47 in (1944) |
| September 19 | 93.0°F (1991) | 19.9°F (1965) | 0.60 in (1982) |
| September 20 | 91.9°F (1936) | 21.0°F (1949) | 0.97 in (2010) |
| September 21 | 96.1°F (1967) | 19.9°F (1932) | 0.22 in (1944) |
| September 22 | 93.9°F (1992) | 19.0°F (1960) | 0.23 in (1973) |
| September 23 | 96.1°F (1994) | 16.0°F (1926) | 0.61 in (1934) |
| September 24 | 96.1°F (2009) | 12.0°F (1926) | 0.33 in (1986) |
| September 25 | 96.1°F (1952) | 12.9°F (1926) | 0.29 in (2013) |
| September 26 | 93.9°F (1963) | 17.1°F (1926) | 0.45 in (1981) |
| September 27 | 95.0°F (1963) | 19.0°F (1945) | 1.17 in (1957) |
| September 28 | 91.9°F (1963) | 19.0°F (1945) | 0.48 in (1930) |
| September 29 | 91.9°F (1967) | 18.0°F (1950) | 0.40 in (1913) |
| September 30 | 93.9°F (2020) | 17.1°F (1954) | 0.35 in (1957) |