September weather in Entiat, WA
The average temperature in Entiat in September is 64.2°F (49.4°F–79.1°F). Average precipitation: 0.40 inches.
September is a fall month in Entiat, and is warmer than the annual average of 51.4°F. Daily temperatures swing about 29.7°F between overnight low and afternoon high. Expect about 3 days with precipitation. Daylight averages about 12h 19m. For travel, September is a comfortable month to visit.
Avg High
79.1°F
Avg Low
49.4°F
Precipitation
0.40 in
Daylight
12h 19m
September records in Entiat
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| September 1 | 100.0°F (1998) | 39.9°F (1999) | 0.00 in (1989) |
| September 2 | 98.1°F (2022) | 37.9°F (2010) | 0.01 in (2004) |
| September 3 | 100.0°F (2025) | 33.1°F (2008) | 0.15 in (2009) |
| September 4 | 98.1°F (1998) | 39.9°F (1996) | 0.30 in (1997) |
| September 5 | 96.1°F (2003) | 34.0°F (1991) | 0.00 in (1989) |
| September 6 | 97.0°F (2020) | 28.9°F (1991) | 0.77 in (2013) |
| September 7 | 97.0°F (1998) | 33.1°F (1991) | 0.42 in (2010) |
| September 8 | 95.0°F (1993) | 30.9°F (1991) | 0.23 in (2019) |
| September 9 | 93.0°F (1990) | 24.1°F (1991) | 0.72 in (1991) |
| September 10 | 96.1°F (2011) | 30.9°F (2008) | 0.13 in (2019) |
| September 11 | 95.0°F (1993) | 18.0°F (2008) | 0.25 in (2019) |
| September 12 | 93.0°F (2011) | 26.1°F (2009) | 0.32 in (2018) |
| September 13 | 96.1°F (2015) | 19.9°F (2008) | 0.08 in (2022) |
| September 14 | 95.0°F (2009) | -6.0°F (2008) | 0.31 in (2022) |
| September 15 | 93.0°F (2013) | 32.0°F (2008) | 0.40 in (1996) |
| September 16 | 93.0°F (2001) | 18.0°F (2008) | 0.34 in (2013) |
| September 17 | 91.9°F (1998) | 32.0°F (2008) | 0.07 in (2010) |
| September 18 | 89.1°F (1995) | 39.0°F (2009) | 0.20 in (2019) |
| September 19 | 90.0°F (1994) | 34.0°F (2009) | 0.17 in (2006) |
| September 20 | 88.0°F (2012) | 36.0°F (2009) | 0.06 in (2004) |
| September 21 | 88.0°F (1999) | 34.0°F (1994) | 0.19 in (2000) |
| September 22 | 88.0°F (2014) | 32.0°F (2009) | 0.01 in (2008) |
| September 23 | 89.1°F (1999) | 21.9°F (2008) | 0.04 in (2004) |
| September 24 | 88.0°F (2001) | 12.0°F (2008) | 0.50 in (2020) |
| September 25 | 89.1°F (1990) | 35.1°F (2000) | 0.15 in (2014) |
| September 26 | 89.1°F (1994) | 37.9°F (2000) | 0.45 in (2023) |
| September 27 | 86.0°F (2003) | 27.0°F (2000) | 0.20 in (2023) |
| September 28 | 88.0°F (1991) | 18.0°F (2008) | 0.05 in (2023) |
| September 29 | 89.1°F (1996) | 34.0°F (1999) | 0.42 in (2019) |
| September 30 | 91.0°F (1993) | 30.0°F (2008) | 0.33 in (2007) |