October is one of the warmer months of the year in Bothell, with average highs near 14.5°C and lows around 7.2°C (mean 10.9°C). It is a relatively wet time of year, averaging 127 mm of rainfall and 84% relative humidity across the period.
October is one of the warmer months of the year in Bothell. Across 45 years of records, the warmest October in Bothell was 2022 — when the month averaged 14°C — while the coldest was 2025 at 8.4°C. Typical October days reach 14.5°C with nights near 7.2°C. The long-term October temperature trend is broadly flat.
October is a relatively wet time of year in Bothell, averaging 127 mm of rainfall. The wettest October on record was 2016 with 289 mm, while the driest was 1987 at 13 mm.
Relative humidity in Bothell during October averages 84%. The most humid October was 2025 at 92%, and the least humid was 1987 at 67%.
October receives about 2.3 kWh/m²/day of solar energy in Bothell. The sunniest October was 1987 at 2.9 kWh/m²/day, and the cloudiest was 2016 at 1.8.
Average wind speed in Bothell during October is 0.6 m/s. The windiest Octobers were 1997, 2016 and 2021, among others at 0.8 m/s, while the calmest were 1987 and 1993 at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 11.1°C | 10.6°C | 10.7°C | 11.1°C | 10.8°C | -0.3°C |
| Avg High | 15.1°C | 14.3°C | 14.3°C | 14.6°C | 14.2°C | -0.9°C |
| Avg Low | 7.0°C | 6.9°C | 7.0°C | 7.6°C | 7.4°C | +0.4°C |
| Avg Rain | 118 mm | 130 mm | 114 mm | 143 mm | 131 mm | +14 mm |
October temperatures in Bothell have risen by about 0.7°C between 1981–1985 and 2021–2025.
October has ranged from a record low of -3.7°C (1984) to a record high of 29.7°C (1987).
Rainfall in October is a relatively wet time of year, averaging 127 mm, with a wettest year of 289 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.1°C per decade while lows rose 0.2°C per decade, narrowing the gap between day and night.
A good time to visit Bothell
October is a good time to visit Bothell, with days averaging 14.5°C and nights around 7.2°C (mean 10.9°C, close to Bothell's yearly average) and higher rainfall. August and July are marginally more temperate, but October still suits most travellers.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 ❄️ | 11.1°C | 8.4°C | 5.8°C | 16.9°C | 3.3°C | 155 mm | 92% | 0.7 m/s | 2.3 |
| 2024 | 11.8°C | 9.1°C | 6.5°C | 18.4°C | 3.8°C | 148 mm | 92% | 0.6 m/s | 2.3 |
| 2023 | 15.6°C | 11.7°C | 7.8°C | 27.8°C | 0.0°C | 84 mm | 85% | 0.6 m/s | 2.5 |
| 2022 🔥 | 18.4°C | 14.0°C | 9.6°C | 28.9°C | 5.1°C | 107 mm | 81% | 0.6 m/s | 2.8 |
| 2021 | 13.5°C | 10.2°C | 6.9°C | 18.4°C | 1.6°C | 173 mm | 87% | 0.8 m/s | 2.1 |
| 2020 | 14.9°C | 11.3°C | 7.8°C | 22.2°C | -2.2°C | 122 mm | 86% | 0.6 m/s | 2.5 |
| 2019 | 12.8°C | 9.1°C | 5.4°C | 17.3°C | -1.1°C | 119 mm | 81% | 0.7 m/s | 2.5 |
| 2018 | 15.2°C | 11.4°C | 7.6°C | 23.0°C | 5.2°C | 104 mm | 84% | 0.6 m/s | 2.5 |
| 2017 | 14.6°C | 10.6°C | 6.7°C | 20.1°C | 3.1°C | 133 mm | 84% | 0.6 m/s | 2.6 |
| 2016 🌧️ | 14.3°C | 11.2°C | 8.2°C | 17.2°C | 4.1°C | 289 mm | 88% | 0.8 m/s | 1.8 |
| 2015 | 16.6°C | 13.1°C | 9.6°C | 24.7°C | 6.5°C | 130 mm | 85% | 0.5 m/s | 2.1 |
| 2014 | 16.3°C | 13.2°C | 10.1°C | 22.8°C | 5.8°C | 198 mm | 88% | 0.6 m/s | 2.1 |
| 2013 | 13.9°C | 10.1°C | 6.3°C | 19.5°C | 3.8°C | 38 mm | 84% | 0.5 m/s | 2.6 |
| 2012 | 14.2°C | 10.9°C | 7.5°C | 23.7°C | 3.3°C | 190 mm | 85% | 0.6 m/s | 2.3 |
| 2011 | 13.6°C | 10.3°C | 7.0°C | 18.5°C | 3.3°C | 112 mm | 88% | 0.6 m/s | 2.1 |
| 2010 | 14.6°C | 11.1°C | 7.7°C | 21.6°C | 3.5°C | 119 mm | 86% | 0.7 m/s | 2.4 |
| 2009 | 13.3°C | 9.9°C | 6.4°C | 17.9°C | 2.3°C | 191 mm | 82% | 0.7 m/s | 2.1 |
| 2008 | 13.9°C | 10.2°C | 6.5°C | 24.2°C | 3.3°C | 74 mm | 84% | 0.6 m/s | 2.3 |
| 2007 | 13.5°C | 9.9°C | 6.3°C | 22.6°C | 2.1°C | 110 mm | 87% | 0.7 m/s | 2.1 |
| 2006 | 14.4°C | 10.6°C | 6.8°C | 20.5°C | -1.1°C | 55 mm | 80% | 0.6 m/s | 2.6 |
| 2005 | 14.9°C | 11.4°C | 8.0°C | 20.0°C | 3.7°C | 118 mm | 88% | 0.6 m/s | 2 |
| 2004 | 15.0°C | 11.5°C | 8.0°C | 24.5°C | 4.0°C | 112 mm | 85% | 0.6 m/s | 2.3 |
| 2003 | 15.6°C | 12.2°C | 8.7°C | 21.3°C | -0.9°C | 206 mm | 84% | 0.7 m/s | 2.1 |
| 2002 | 14.9°C | 10.5°C | 6.1°C | 22.2°C | -1.0°C | 24 mm | 78% | 0.5 m/s | 2.6 |
| 2001 | 13.2°C | 9.8°C | 6.4°C | 22.4°C | 2.6°C | 158 mm | 85% | 0.7 m/s | 2.2 |
| 2000 | 14.5°C | 10.8°C | 7.1°C | 21.3°C | 3.6°C | 96 mm | 84% | 0.6 m/s | 2.4 |
| 1999 | 14.4°C | 10.4°C | 6.5°C | 22.7°C | 2.5°C | 121 mm | 82% | 0.6 m/s | 2.5 |
| 1998 | 14.7°C | 11.1°C | 7.4°C | 23.0°C | 3.8°C | 109 mm | 86% | 0.6 m/s | 2.3 |
| 1997 | 13.7°C | 10.6°C | 7.5°C | 21.0°C | 5.1°C | 201 mm | 88% | 0.8 m/s | 2.1 |
| 1996 | 13.4°C | 9.8°C | 6.1°C | 23.3°C | 0.9°C | 186 mm | 86% | 0.7 m/s | 2.2 |
| 1995 | 13.8°C | 10.2°C | 6.6°C | 19.5°C | 0.5°C | 156 mm | 85% | 0.7 m/s | 2.3 |
| 1994 | 14.6°C | 10.7°C | 6.8°C | 21.0°C | 3.7°C | 136 mm | 80% | 0.6 m/s | 2.5 |
| 1993 | 16.7°C | 12.5°C | 8.3°C | 27.1°C | 5.1°C | 63 mm | 80% | 0.4 m/s | 2.4 |
| 1992 | 14.9°C | 11.3°C | 7.8°C | 23.0°C | 0.5°C | 81 mm | 83% | 0.6 m/s | 2.2 |
| 1991 | 14.3°C | 10.3°C | 6.2°C | 23.7°C | -1.2°C | 50 mm | 77% | 0.6 m/s | 2.7 |
| 1990 | 12.8°C | 9.4°C | 6.0°C | 18.2°C | 2.9°C | 196 mm | 86% | 0.8 m/s | 2.2 |
| 1989 | 15.0°C | 11.0°C | 6.9°C | 22.1°C | 1.5°C | 112 mm | 81% | 0.6 m/s | 2.3 |
| 1988 | 17.3°C | 13.0°C | 8.7°C | 26.1°C | 1.1°C | 101 mm | 82% | 0.5 m/s | 2 |
| 1987 | 18.6°C | 13.4°C | 8.2°C | 29.7°C | 5.1°C | 13 mm | 67% | 0.4 m/s | 2.9 |
| 1986 | 16.7°C | 12.2°C | 7.6°C | 20.0°C | 4.6°C | 87 mm | 79% | 0.5 m/s | 2.4 |
| 1985 | 13.2°C | 9.5°C | 5.8°C | 20.9°C | -0.4°C | 248 mm | 83% | 0.7 m/s | 2.1 |
| 1984 | 12.2°C | 8.8°C | 5.5°C | 20.9°C | -3.7°C | 127 mm | 84% | 0.7 m/s | 2 |
| 1983 | 14.5°C | 10.5°C | 6.5°C | 20.7°C | 4.0°C | 66 mm | 83% | 0.6 m/s | — |
| 1982 | 14.5°C | 10.7°C | 6.8°C | 23.2°C | 1.0°C | 135 mm | 83% | 0.7 m/s | — |
| 1981 | 14.3°C | 10.6°C | 6.8°C | 20.5°C | 2.7°C | 173 mm | 84% | 0.7 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 14.5°C with lows near 7.2°C (mean 10.9°C), based on 45 years of NASA POWER data.
October averages 127 mm of rainfall in Bothell, a relatively wet time of year. The wettest on record was 289 mm in 2016.
The hottest October reached 29.7°C in 1987. The coldest dipped to -3.7°C in 1984.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 0.7°C. Daytime highs moved from 13.7°C to 14.1°C and overnight lows from 6.3°C to 7.3°C over the same span.
October is one of the warmer months of the year in Bothell and a relatively wet time of year, so plan for around 14.5°C daytime highs and 7.2°C at night.
Not quite — October is the 7th coolest month in Bothell, averaging 10.9°C.
For October in Bothell, pack warm layers and a jacket for chilly mornings, with typical highs of 14.5°C and lows of 7.2°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 84% — quite humid.
Average wind speed in October is 0.6 m/s. The windiest October on record averaged 0.8 m/s (1990).
The wettest October on record was 2016 with 289 mm. On average, October sees 127 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in Bothell behaves each October, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for October specifically, along with year-by-year records and how the month has changed over the decades.
