September weather in Tualatin, OR
The average temperature in Tualatin in September is 63.5°F (49.7°F–77.2°F). Average precipitation: inches.
September is a fall month in Tualatin, and is warmer than the annual average of 53.7°F. Daily temperatures swing about 27.5°F between overnight low and afternoon high. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
77.2°F
Avg Low
49.7°F
Precipitation
in
Daylight
12h 18m
September records in Tualatin
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 96.1°F (1988) | 36.0°F (1973) | 0.23 in (1983) |
| September 2 | 100.9°F (1988) | 41.0°F (1973) | 0.47 in (1980) |
| September 3 | 96.1°F (2003) | 39.9°F (1980) | 0.95 in (1979) |
| September 4 | 95.0°F (1973) | 44.1°F (1980) | 0.44 in (1978) |
| September 5 | 97.0°F (2003) | 44.1°F (2000) | 0.15 in (1978) |
| September 6 | 97.0°F (2003) | 42.1°F (1992) | 0.61 in (1984) |
| September 7 | 90.0°F (1993) | 39.9°F (1976) | 0.32 in (1973) |
| September 8 | 99.0°F (1981) | 42.1°F (1973) | 0.45 in (1978) |
| September 9 | 90.0°F (1981) | 41.0°F (1978) | 0.92 in (1978) |
| September 10 | 97.0°F (2003) | 42.1°F (1988) | 0.83 in (1985) |
| September 11 | 90.0°F (1975) | 41.0°F (1986) | 0.36 in (1978) |
| September 12 | 90.0°F (1975) | 42.1°F (1986) | 0.19 in (1984) |
| September 13 | 91.9°F (1975) | 42.1°F (1982) | 0.30 in (1985) |
| September 14 | 89.1°F (1975) | 39.0°F (1978) | 0.75 in (2006) |
| September 15 | 93.0°F (1979) | 39.9°F (1992) | 1.76 in (1996) |
| September 16 | 97.0°F (1981) | 39.9°F (1978) | 0.50 in (1990) |
| September 17 | 90.0°F (1991) | 39.9°F (1983) | 0.68 in (2002) |
| September 18 | 90.0°F (1999) | 39.0°F (1988) | 0.53 in (1986) |
| September 19 | 91.9°F (1999) | 36.0°F (1983) | 0.56 in (1988) |
| September 20 | 91.9°F (1974) | 37.0°F (1983) | 1.22 in (1982) |
| September 21 | 91.0°F (1974) | 39.0°F (1993) | 0.55 in (1982) |
| September 22 | 91.9°F (1974) | 37.9°F (1993) | 0.60 in (1973) |
| September 23 | 91.9°F (1974) | 39.0°F (2005) | 0.73 in (1986) |
| September 24 | 91.9°F (1974) | 37.0°F (1984) | 0.73 in (1973) |
| September 25 | 95.0°F (1974) | 37.9°F (2005) | 0.36 in (1986) |
| September 26 | 88.0°F (1974) | 30.0°F (2005) | 0.57 in (2001) |
| September 27 | 93.9°F (2003) | 37.0°F (1999) | 0.89 in (1981) |
| September 28 | 87.1°F (1989) | 36.0°F (1983) | 0.27 in (1995) |
| September 29 | 89.1°F (1993) | 34.0°F (1982) | 0.20 in (1977) |
| September 30 | 87.1°F (1987) | 35.1°F (1982) | 1.81 in (2005) |