October weather in Issaquah, WA
The average temperature in Issaquah in October is 53.7°F (46.4°F–61.0°F). Average precipitation: 3.49 inches.
October is a fall month in Issaquah, and is warmer than the annual average of 53.6°F. Daily temperatures swing about 14.6°F between overnight low and afternoon high. Expect about 15 days with precipitation. Daylight averages about 10h 35m. For travel, October is a comfortable month to visit.
Avg High
61.0°F
Avg Low
46.4°F
Precipitation
3.49 in
Daylight
10h 35m
October records in Issaquah
| Date | Record High | Record Low | Record Precip |
|---|---|---|---|
| October 1 | 77.0°F (2022) | 37.9°F (2019) | 0.28 in (2018) |
| October 2 | 80.1°F (2022) | 41.0°F (2002) | 0.53 in (2009) |
| October 3 | 79.0°F (2022) | 42.1°F (2018) | 0.47 in (2002) |
| October 4 | 72.0°F (2001) | 39.0°F (2000) | 0.26 in (2024) |
| October 5 | 73.9°F (2001) | 39.9°F (2009) | 0.38 in (2018) |
| October 6 | 77.0°F (2000) | 39.9°F (2009) | 0.47 in (2011) |
| October 7 | 81.0°F (2023) | 42.1°F (2012) | 0.45 in (2007) |
| October 8 | 77.0°F (2022) | 39.9°F (2021) | 1.17 in (2004) |
| October 9 | 75.0°F (2022) | 35.1°F (2019) | 0.89 in (2010) |
| October 10 | 73.0°F (2015) | 33.1°F (2019) | 1.12 in (2015) |
| October 11 | 70.0°F (2022) | 35.1°F (2009) | 0.93 in (2011) |
| October 12 | 70.0°F (2006) | 36.0°F (2002) | 0.60 in (1998) |
| October 13 | 75.0°F (2022) | 37.9°F (2002) | 0.79 in (2016) |
| October 14 | 73.9°F (2022) | 37.0°F (2002) | 0.79 in (2016) |
| October 15 | 78.1°F (2022) | 35.1°F (2025) | 0.40 in (2003) |
| October 16 | 86.0°F (2022) | 39.0°F (2010) | 0.75 in (2009) |
| October 17 | 80.1°F (2009) | 35.1°F (2010) | 1.13 in (2000) |
| October 18 | 81.0°F (2009) | 39.9°F (2010) | 0.98 in (2017) |
| October 19 | 73.0°F (2014) | 37.0°F (2008) | 0.68 in (2017) |
| October 20 | 69.1°F (1999) | 41.0°F (2001) | 4.48 in (2003) |
| October 21 | 70.0°F (1999) | 39.0°F (2012) | 0.93 in (2017) |
| October 22 | 72.0°F (1998) | 36.0°F (2012) | 1.18 in (2014) |
| October 23 | 73.0°F (2007) | 37.9°F (2020) | 0.49 in (2010) |
| October 24 | 66.0°F (2017) | 35.1°F (2020) | 0.78 in (2011) |
| October 25 | 68.0°F (2015) | 31.1°F (2020) | 1.01 in (2010) |
| October 26 | 64.9°F (1998) | 32.0°F (2007) | 1.08 in (2009) |
| October 27 | 66.0°F (2017) | 33.1°F (2019) | 1.15 in (1998) |
| October 28 | 66.9°F (2016) | 30.2°F (2023) | 1.46 in (2021) |
| October 29 | 63.0°F (2014) | 30.2°F (2023) | 0.57 in (2006) |
| October 30 | 64.0°F (2015) | 28.9°F (2002) | 1.11 in (2012) |
| October 31 | 61.0°F (2015) | 28.0°F (2003) | 1.07 in (2015) |