September weather in Helix, OR
The average temperature in Helix in September is 61.0°F (42.9°F–79.1°F). Average precipitation: 0.58 inches.
September is a fall month in Helix, and is warmer than the annual average of 50.6°F. Daily temperatures swing about 36.2°F between overnight low and afternoon high. Expect about 4 days with precipitation. Daylight averages about 12h 18m. For travel, September is a comfortable month to visit.
Avg High
79.1°F
Avg Low
42.9°F
Precipitation
0.58 in
Daylight
12h 18m
September records in Helix
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 105.1°F (1967) | 32.0°F (2021) | 0.39 in (1961) |
| September 2 | 102.9°F (1998) | 34.0°F (1999) | 0.97 in (1971) |
| September 3 | 102.0°F (2024) | 35.1°F (1958) | 0.50 in (1941) |
| September 4 | 100.9°F (1998) | 30.9°F (2015) | 0.58 in (1970) |
| September 5 | 100.9°F (1988) | 35.1°F (1956) | 0.42 in (2015) |
| September 6 | 99.0°F (1966) | 33.1°F (1965) | 0.53 in (1978) |
| September 7 | 100.0°F (2003) | 30.0°F (1992) | 0.58 in (1995) |
| September 8 | 93.9°F (2024) | 30.0°F (1962) | 0.36 in (1998) |
| September 9 | 98.1°F (1981) | 32.0°F (1962) | 0.38 in (2003) |
| September 10 | 93.9°F (2024) | 33.1°F (1964) | 0.45 in (1982) |
| September 11 | 96.1°F (1990) | 32.0°F (2014) | 0.53 in (1962) |
| September 12 | 96.1°F (1959) | 30.0°F (2014) | 0.43 in (2024) |
| September 13 | 95.0°F (1959) | 28.0°F (1970) | 0.94 in (1980) |
| September 14 | 93.9°F (2002) | 27.0°F (1970) | 0.23 in (1966) |
| September 15 | 93.9°F (1998) | 30.0°F (1970) | 0.41 in (1996) |
| September 16 | 100.0°F (1979) | 32.0°F (1971) | 0.41 in (1986) |
| September 17 | 96.1°F (1938) | 23.0°F (1965) | 0.43 in (1940) |
| September 18 | 95.0°F (1981) | 26.1°F (1965) | 0.65 in (1940) |
| September 19 | 93.0°F (2008) | 28.0°F (1957) | 0.43 in (1998) |
| September 20 | 91.0°F (1994) | 28.9°F (1983) | 0.67 in (2017) |
| September 21 | 93.0°F (1939) | 28.9°F (1960) | 0.43 in (2006) |
| September 22 | 96.1°F (1967) | 27.0°F (1993) | 0.32 in (1972) |
| September 23 | 93.0°F (1999) | 28.9°F (1993) | 0.38 in (2016) |
| September 24 | 91.0°F (1999) | 28.9°F (1961) | 0.49 in (1986) |
| September 25 | 97.0°F (2001) | 24.1°F (1934) | 0.15 in (1973) |
| September 26 | 93.9°F (1997) | 25.0°F (1972) | 0.68 in (1959) |
| September 27 | 90.0°F (2003) | 27.0°F (1972) | 0.79 in (1981) |
| September 28 | 90.0°F (1967) | 23.0°F (1985) | 0.47 in (1962) |
| September 29 | 91.0°F (1967) | 19.9°F (1985) | 0.41 in (1977) |
| September 30 | 90.0°F (1997) | 21.0°F (1983) | 0.45 in (1986) |