October is one of the warmer months of the year in West Chester, with average highs near 18.8°C and lows around 7.5°C (mean 13.2°C). It is about average for rainfall, averaging 93 mm of rainfall and 76% relative humidity across the period.
October is one of the warmer months of the year in West Chester. Across 45 years of records, the warmest October in West Chester was 2007 — when the month averaged 17°C — while the coldest was 1987 at 9.8°C. Typical October days reach 18.8°C with nights near 7.5°C. The long-term trend is warming, about 0.6°C per decade.
October is about average for rainfall in West Chester, averaging 93 mm of rainfall. The wettest October on record was 2005 with 234 mm, while the driest was 2024 at 1 mm.
Relative humidity in West Chester during October averages 76%. The most humid October was 2011 at 84%, and the least humid was 2024 at 61%.
October receives about 3.3 kWh/m²/day of solar energy in West Chester. The sunniest Octobers were 2001 and 2024 at 4 kWh/m²/day, and the cloudiest was 2002 at 2.7.
Average wind speed in West Chester during October is 0.5 m/s. The windiest Octobers were 2019, 2022 and 2025, among others at 0.5 m/s, while the calmest were 2021, 2023 and 2024, among others at 0.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 12.3°C | 12.5°C | 12.9°C | 13.9°C | 14.5°C | +2.2°C |
| Avg High | 18.2°C | 18.3°C | 18.4°C | 19.3°C | 20.3°C | +2.1°C |
| Avg Low | 6.4°C | 6.7°C | 7.5°C | 8.5°C | 8.8°C | +2.4°C |
| Avg Rain | 78 mm | 88 mm | 112 mm | 100 mm | 84 mm | +6 mm |
October temperatures in West Chester have risen by about 1.6°C between 1981–1985 and 2021–2025.
October has ranged from a record low of -3°C (1988) to a record high of 34.9°C (2019).
Rainfall in October is about average for rainfall, averaging 93 mm, with a wettest year of 234 mm.
A good time to visit West Chester
October is a good time to visit West Chester, with days averaging 18.8°C and nights around 7.5°C (mean 13.2°C, warmer than West Chester's yearly average) and higher rainfall. June and August 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 | 20.0°C | 14.0°C | 7.9°C | 29.0°C | 2.4°C | 69 mm | 68% | 0.5 m/s | 3.6 |
| 2024 | 22.6°C | 15.6°C | 8.6°C | 29.8°C | 3.0°C | 1 mm | 61% | 0.4 m/s | 4 |
| 2023 | 20.7°C | 14.9°C | 9.1°C | 28.4°C | 4.1°C | 39 mm | 77% | 0.4 m/s | 3.5 |
| 2022 | 17.5°C | 12.1°C | 6.7°C | 23.9°C | 1.5°C | 145 mm | 81% | 0.5 m/s | 3.2 |
| 2021 | 21.7°C | 16.7°C | 11.7°C | 27.6°C | 5.5°C | 111 mm | 83% | 0.4 m/s | 3.1 |
| 2020 | 19.1°C | 13.9°C | 8.8°C | 25.2°C | -2.4°C | 140 mm | 80% | 0.4 m/s | 3.1 |
| 2019 | 21.7°C | 15.9°C | 10.1°C | 34.9°C | 2.4°C | 87 mm | 70% | 0.5 m/s | 3 |
| 2018 | 18.2°C | 13.4°C | 8.7°C | 28.3°C | -1.0°C | 80 mm | 83% | 0.5 m/s | 3.1 |
| 2017 | 22.4°C | 16.5°C | 10.5°C | 28.6°C | 2.6°C | 112 mm | 73% | 0.5 m/s | 3.3 |
| 2016 | 20.0°C | 14.1°C | 8.2°C | 29.1°C | 0.2°C | 42 mm | 75% | 0.5 m/s | 3.4 |
| 2015 | 17.8°C | 12.4°C | 6.9°C | 25.6°C | -2.0°C | 101 mm | 77% | 0.5 m/s | 3.4 |
| 2014 | 19.3°C | 13.9°C | 8.5°C | 26.2°C | 1.4°C | 88 mm | 76% | 0.5 m/s | 3.1 |
| 2013 | 19.5°C | 14.0°C | 8.5°C | 30.5°C | -1.4°C | 96 mm | 78% | 0.5 m/s | 3.2 |
| 2012 | 18.7°C | 13.7°C | 8.8°C | 27.0°C | -0.8°C | 171 mm | 81% | 0.4 m/s | 2.8 |
| 2011 | 17.4°C | 12.4°C | 7.5°C | 30.9°C | -1.9°C | 99 mm | 84% | 0.5 m/s | 3.2 |
| 2010 | 17.7°C | 12.6°C | 7.4°C | 24.5°C | 1.8°C | 125 mm | 81% | 0.5 m/s | 3.2 |
| 2009 | 16.6°C | 11.8°C | 6.9°C | 24.7°C | -0.5°C | 148 mm | 82% | 0.5 m/s | 2.9 |
| 2008 | 18.2°C | 12.2°C | 6.3°C | 27.1°C | -0.8°C | 64 mm | 73% | 0.5 m/s | 3.6 |
| 2007 🔥 | 22.9°C | 17.0°C | 11.2°C | 31.9°C | 1.4°C | 150 mm | 76% | 0.4 m/s | 3.3 |
| 2006 | 17.2°C | 11.8°C | 6.4°C | 26.5°C | -1.2°C | 122 mm | 78% | 0.5 m/s | 3.3 |
| 2005 🌧️ | 18.8°C | 13.8°C | 8.7°C | 28.9°C | 0.2°C | 234 mm | 81% | 0.5 m/s | 2.8 |
| 2004 | 17.3°C | 12.4°C | 7.4°C | 23.4°C | 2.2°C | 57 mm | 83% | 0.4 m/s | 3.1 |
| 2003 | 16.9°C | 11.5°C | 6.0°C | 24.9°C | -1.1°C | 131 mm | 81% | 0.5 m/s | 3.3 |
| 2002 | 17.2°C | 12.4°C | 7.7°C | 30.1°C | 0.3°C | 160 mm | 81% | 0.4 m/s | 2.7 |
| 2001 | 20.0°C | 13.7°C | 7.4°C | 27.7°C | -1.3°C | 21 mm | 64% | 0.5 m/s | 4 |
| 2000 | 19.2°C | 12.8°C | 6.5°C | 26.7°C | -0.1°C | 30 mm | 73% | 0.4 m/s | 3.6 |
| 1999 | 17.2°C | 11.4°C | 5.6°C | 23.6°C | 0.8°C | 79 mm | 81% | 0.4 m/s | 3.5 |
| 1998 | 18.7°C | 13.2°C | 7.6°C | 25.3°C | 1.7°C | 83 mm | 73% | 0.4 m/s | 3.2 |
| 1997 | 19.2°C | 13.1°C | 6.9°C | 30.4°C | -1.5°C | 57 mm | 69% | 0.4 m/s | 3.5 |
| 1996 | 17.3°C | 11.8°C | 6.3°C | 24.5°C | 0.8°C | 150 mm | 81% | 0.5 m/s | 3.3 |
| 1995 | 20.2°C | 14.3°C | 8.3°C | 27.6°C | 1.4°C | 187 mm | 78% | 0.5 m/s | 3.5 |
| 1994 | 17.8°C | 11.7°C | 5.6°C | 23.9°C | 0.8°C | 31 mm | 74% | 0.4 m/s | 3.6 |
| 1993 | 16.4°C | 11.0°C | 5.6°C | 23.9°C | -0.6°C | 97 mm | 79% | 0.4 m/s | 3.3 |
| 1992 | 16.7°C | 10.7°C | 4.7°C | 24.5°C | -3.0°C | 49 mm | 75% | 0.5 m/s | 3.1 |
| 1991 | 18.9°C | 12.9°C | 7.0°C | 27.1°C | -0.3°C | 56 mm | 77% | 0.5 m/s | 3.4 |
| 1990 | 20.5°C | 14.8°C | 9.1°C | 28.3°C | -2.4°C | 95 mm | 73% | 0.5 m/s | 3.6 |
| 1989 | 18.7°C | 12.8°C | 7.0°C | 25.6°C | 0.4°C | 116 mm | 81% | 0.5 m/s | 3.3 |
| 1988 | 15.6°C | 9.9°C | 4.2°C | 25.9°C | -3.0°C | 65 mm | 70% | 0.4 m/s | 3.5 |
| 1987 ❄️ | 16.0°C | 9.8°C | 3.6°C | 20.8°C | -2.0°C | 74 mm | 76% | 0.5 m/s | 3.5 |
| 1986 | 18.9°C | 13.0°C | 7.1°C | 28.7°C | -0.1°C | 67 mm | 74% | 0.4 m/s | 3.2 |
| 1985 | 18.6°C | 13.0°C | 7.4°C | 24.9°C | -2.3°C | 49 mm | 78% | 0.4 m/s | 3.2 |
| 1984 | 21.3°C | 15.6°C | 9.8°C | 26.6°C | 2.9°C | 81 mm | 76% | 0.4 m/s | 3.4 |
| 1983 | 18.6°C | 13.0°C | 7.3°C | 29.1°C | -2.2°C | 121 mm | 74% | 0.5 m/s | — |
| 1982 | 19.2°C | 13.0°C | 6.7°C | 27.6°C | -1.9°C | 44 mm | 69% | 0.4 m/s | — |
| 1981 | 16.9°C | 10.9°C | 4.8°C | 25.2°C | -1.8°C | 85 mm | 72% | 0.5 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 18.8°C with lows near 7.5°C (mean 13.2°C), based on 45 years of NASA POWER data.
October averages 93 mm of rainfall in West Chester, about average for rainfall. The wettest on record was 234 mm in 2005.
The hottest October reached 34.9°C in 2019. The coldest dipped to -3°C in 1988.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 1.6°C. Daytime highs moved from 18.9°C to 20.5°C and overnight lows from 7.2°C to 8.8°C over the same span.
October is one of the warmer months of the year in West Chester and about average for rainfall, so plan for around 18.8°C daytime highs and 7.5°C at night.
Not quite — October is the 7th coolest month in West Chester, averaging 13.2°C.
For October in West Chester, pack warm layers and a jacket for chilly mornings, with typical highs of 18.8°C and lows of 7.5°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 76% — quite humid.
Average wind speed in October is 0.5 m/s. The windiest October on record averaged 0.5 m/s (1981).
The wettest October on record was 2005 with 234 mm. On average, October sees 93 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 West Chester 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.
