October is one of the warmer months of the year in East Gwillimbury, with average highs near 14.2°C and lows around 5.1°C (mean 9.6°C). It is about average for rainfall, averaging 62 mm of rainfall and 78% relative humidity across the period.
October is one of the warmer months of the year in East Gwillimbury. Across 45 years of records, the warmest October in East Gwillimbury was 2021 — when the month averaged 13.5°C — while the coldest was 1981 at 6.5°C. Typical October days reach 14.2°C with nights near 5.1°C. The long-term trend is warming, about 0.8°C per decade.
October is about average for rainfall in East Gwillimbury, averaging 62 mm of rainfall. The wettest October on record was 2006 with 144 mm, while the driest was 2000 at 24 mm.
Relative humidity in East Gwillimbury during October averages 78%. The most humid October was 2006 at 83%, and the least humid was 2022 at 71%.
October receives about 2.5 kWh/m²/day of solar energy in East Gwillimbury. The sunniest Octobers were 1998 and 2025 at 3 kWh/m²/day, and the cloudiest was 2018 at 2.
Average wind speed in East Gwillimbury during October is 3.1 m/s. The windiest October was 2015 at 3.6 m/s, while the calmest was 1984 at 2.4 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 8.5°C | 8.9°C | 9.6°C | 10.5°C | 11.5°C | +3°C |
| Avg High | 13.1°C | 13.7°C | 14.0°C | 14.8°C | 16.1°C | +3°C |
| Avg Low | 3.8°C | 4.1°C | 5.1°C | 6.2°C | 7.0°C | +3.2°C |
| Avg Rain | 52 mm | 61 mm | 66 mm | 71 mm | 53 mm | +0 mm |
October temperatures in East Gwillimbury have risen by about 3°C between 1981–1985 and 2021–2025.
October has ranged from a record low of -4.2°C (1988) to a record high of 30.2°C (2023).
Rainfall in October is about average for rainfall, averaging 62 mm, with a wettest year of 144 mm.
Daytime highs and overnight lows have shifted differently — highs rose about 0.7°C per decade while lows rose 0.9°C per decade, narrowing the gap between day and night.
A good time to visit East Gwillimbury
October is a good time to visit East Gwillimbury, with days averaging 14.2°C and nights around 5.1°C (mean 9.6°C, warmer than East Gwillimbury's yearly average) and moderate rainfall. July 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 | 16.6°C | 11.7°C | 6.8°C | 28.4°C | -0.5°C | 53 mm | 73% | 2.9 m/s | 3 |
| 2024 | 17.0°C | 11.8°C | 6.6°C | 25.3°C | 1.9°C | 42 mm | 72% | 3 m/s | 2.9 |
| 2023 | 16.5°C | 12.4°C | 8.3°C | 30.2°C | 0.1°C | 48 mm | 76% | 3.1 m/s | 2.3 |
| 2022 | 15.6°C | 10.4°C | 5.3°C | 24.4°C | 0.1°C | 31 mm | 71% | 2.8 m/s | 2.8 |
| 2021 🔥 | 17.4°C | 13.5°C | 9.6°C | 25.3°C | 2.6°C | 92 mm | 83% | 2.9 m/s | 2.3 |
| 2020 | 13.3°C | 9.2°C | 5.1°C | 23.8°C | -2.8°C | 50 mm | 76% | 3.2 m/s | 2.3 |
| 2019 | 15.1°C | 10.6°C | 6.1°C | 28.3°C | 1.3°C | 88 mm | 80% | 3.3 m/s | 2.6 |
| 2018 | 13.0°C | 8.7°C | 4.4°C | 27.2°C | -1.7°C | 58 mm | 79% | 3.5 m/s | 2 |
| 2017 | 17.8°C | 13.0°C | 8.1°C | 25.8°C | 2.4°C | 64 mm | 76% | 3.4 m/s | 2.6 |
| 2016 | 15.8°C | 11.5°C | 7.1°C | 24.5°C | -1.8°C | 53 mm | 77% | 3.2 m/s | 2.5 |
| 2015 | 14.0°C | 9.7°C | 5.4°C | 22.2°C | -1.6°C | 72 mm | 74% | 3.6 m/s | 2.5 |
| 2014 | 14.6°C | 10.4°C | 6.3°C | 23.9°C | -0.2°C | 69 mm | 81% | 3.3 m/s | 2.1 |
| 2013 | 15.1°C | 10.8°C | 6.5°C | 24.0°C | -2.7°C | 79 mm | 79% | 2.9 m/s | 2.6 |
| 2012 | 13.9°C | 10.0°C | 6.1°C | 23.0°C | 1.2°C | 97 mm | 80% | 3.4 m/s | 2.1 |
| 2011 | 14.7°C | 10.5°C | 6.3°C | 26.4°C | -1.4°C | 83 mm | 78% | 3.1 m/s | 2.4 |
| 2010 | 14.0°C | 9.7°C | 5.5°C | 22.6°C | -1.8°C | 48 mm | 75% | 3.3 m/s | 2.9 |
| 2009 | 12.2°C | 8.0°C | 3.9°C | 17.3°C | -1.9°C | 75 mm | 80% | 3.1 m/s | 2.1 |
| 2008 | 13.7°C | 9.0°C | 4.3°C | 25.0°C | -2.8°C | 46 mm | 77% | 3.1 m/s | 2.7 |
| 2007 | 18.0°C | 13.3°C | 8.7°C | 28.2°C | 1.5°C | 72 mm | 80% | 3 m/s | 2.2 |
| 2006 🌧️ | 12.6°C | 8.2°C | 3.9°C | 23.8°C | -1.2°C | 144 mm | 83% | 3.4 m/s | 2.3 |
| 2005 | 15.4°C | 11.1°C | 6.9°C | 28.2°C | -0.1°C | 43 mm | 79% | 3.1 m/s | 2.4 |
| 2004 | 14.7°C | 10.3°C | 5.9°C | 26.1°C | 1.3°C | 43 mm | 77% | 3.3 m/s | 2.5 |
| 2003 | 12.8°C | 8.2°C | 3.6°C | 24.7°C | -2.0°C | 65 mm | 81% | 2.9 m/s | 2.5 |
| 2002 | 12.2°C | 8.2°C | 4.1°C | 27.9°C | -2.9°C | 45 mm | 76% | 3 m/s | 2.4 |
| 2001 | 13.5°C | 9.2°C | 4.8°C | 24.4°C | -1.7°C | 109 mm | 81% | 3.4 m/s | 2.1 |
| 2000 | 15.1°C | 10.3°C | 5.4°C | 22.0°C | -1.3°C | 24 mm | 78% | 2.7 m/s | 2.5 |
| 1999 | 13.2°C | 8.5°C | 3.8°C | 21.6°C | -2.8°C | 62 mm | 76% | 3.2 m/s | 2.5 |
| 1998 | 15.3°C | 10.6°C | 5.9°C | 20.2°C | 0.0°C | 36 mm | 75% | 3.2 m/s | 3 |
| 1997 | 14.2°C | 9.4°C | 4.6°C | 25.9°C | -1.6°C | 34 mm | 75% | 2.8 m/s | 2.8 |
| 1996 | 13.0°C | 8.4°C | 3.8°C | 22.7°C | -2.9°C | 58 mm | 82% | 3.3 m/s | 2.2 |
| 1995 | 14.4°C | 10.0°C | 5.6°C | 25.1°C | -0.5°C | 104 mm | 80% | 3.5 m/s | 2.2 |
| 1994 | 15.0°C | 9.9°C | 4.7°C | 23.8°C | 0.4°C | 27 mm | 73% | 2.5 m/s | 2.8 |
| 1993 | 12.3°C | 7.3°C | 2.2°C | 23.8°C | -2.6°C | 89 mm | 78% | 3.4 m/s | 2.2 |
| 1992 | 11.7°C | 6.9°C | 2.1°C | 21.5°C | -3.8°C | 64 mm | 81% | 2.9 m/s | 2.3 |
| 1991 | 14.6°C | 9.8°C | 5.0°C | 24.0°C | -2.7°C | 52 mm | 76% | 3 m/s | 2.4 |
| 1990 | 13.2°C | 8.5°C | 3.8°C | 24.3°C | -3.6°C | 88 mm | 81% | 3.3 m/s | 2.6 |
| 1989 | 14.6°C | 9.5°C | 4.5°C | 23.0°C | -0.3°C | 51 mm | 76% | 3.3 m/s | 2.4 |
| 1988 | 10.9°C | 6.9°C | 3.0°C | 25.2°C | -4.2°C | 56 mm | 77% | 3.4 m/s | 2.4 |
| 1987 | 11.9°C | 7.0°C | 2.1°C | 19.7°C | -2.9°C | 34 mm | 75% | 3 m/s | 2.5 |
| 1986 | 12.7°C | 8.0°C | 3.3°C | 18.9°C | -3.5°C | 42 mm | 83% | 2.7 m/s | 2.8 |
| 1985 | 13.8°C | 9.1°C | 4.4°C | 19.2°C | -3.1°C | 70 mm | 77% | 2.9 m/s | 2.6 |
| 1984 | 15.7°C | 10.7°C | 5.7°C | 20.4°C | 0.3°C | 33 mm | 76% | 2.4 m/s | 2.7 |
| 1983 | 13.4°C | 8.9°C | 4.3°C | 25.2°C | -2.0°C | 75 mm | 78% | 3.3 m/s | — |
| 1982 | 14.5°C | 9.6°C | 4.6°C | 22.7°C | -2.4°C | 38 mm | 79% | 2.7 m/s | — |
| 1981 ❄️ | 10.6°C | 6.5°C | 2.3°C | 17.8°C | -2.8°C | 74 mm | 83% | 3.2 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 14.2°C with lows near 5.1°C (mean 9.6°C), based on 45 years of NASA POWER data.
October averages 62 mm of rainfall in East Gwillimbury, about average for rainfall. The wettest on record was 144 mm in 2006.
The hottest October reached 30.2°C in 2023. The coldest dipped to -4.2°C in 1988.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 3°C. Daytime highs moved from 13.6°C to 16.6°C and overnight lows from 4.3°C to 7.3°C over the same span.
October is one of the warmer months of the year in East Gwillimbury and about average for rainfall, so plan for around 14.2°C daytime highs and 5.1°C at night.
Not quite — October is the 7th coolest month in East Gwillimbury, averaging 9.6°C.
For October in East Gwillimbury, pack warm layers and a jacket for chilly mornings, with typical highs of 14.2°C and lows of 5.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 78% — quite humid.
Average wind speed in October is 3.1 m/s. The windiest October on record averaged 3.6 m/s (2015).
The wettest October on record was 2006 with 144 mm. On average, October sees 62 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 East Gwillimbury 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.
