October is one of the warmer months of the year in Gravenhurst, with average highs near 13.5°C and lows around 4.1°C (mean 8.8°C). It is about average for rainfall, averaging 57 mm of rainfall and 77% relative humidity across the period.
October is one of the warmer months of the year in Gravenhurst. Across 45 years of records, the warmest October in Gravenhurst was 2021 — when the month averaged 13.4°C — while the coldest was 1981 at 5.4°C. Typical October days reach 13.5°C with nights near 4.1°C. The long-term trend is warming, about 0.8°C per decade.
October is about average for rainfall in Gravenhurst, averaging 57 mm of rainfall. The wettest October on record was 2001 with 150 mm, while the driest was 2024 at 12 mm.
Relative humidity in Gravenhurst during October averages 77%. The most humid October was 2003 at 83%, and the least humid was 2025 at 67%.
October receives about 2.5 kWh/m²/day of solar energy in Gravenhurst. The sunniest Octobers were 1998 and 2025 at 3 kWh/m²/day, and the cloudiest was 2018 at 2.
Average wind speed in Gravenhurst during October is 0.5 m/s. The windiest Octobers were 2017, 2019 and 2024, among others at 0.6 m/s, while the calmest were 1986, 1987 and 1995, 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 | 7.5°C | 8.1°C | 8.7°C | 9.7°C | 10.9°C | +3.4°C |
| Avg High | 12.2°C | 12.9°C | 13.3°C | 14.3°C | 15.8°C | +3.6°C |
| Avg Low | 2.7°C | 3.3°C | 4.1°C | 5.1°C | 5.9°C | +3.2°C |
| Avg Rain | 65 mm | 74 mm | 73 mm | 40 mm | 21 mm | -44 mm |
October temperatures in Gravenhurst have risen by about 3.7°C between 1981–1985 and 2021–2025.
October has ranged from a record low of -5.3°C (1986) to a record high of 29.8°C (2025).
Rainfall in October is about average for rainfall, averaging 57 mm, with a wettest year of 150 mm.
A good time to visit Gravenhurst
October is a good time to visit Gravenhurst, with days averaging 13.5°C and nights around 4.1°C (mean 8.8°C, warmer than Gravenhurst'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 | 16.8°C | 11.2°C | 5.6°C | 29.8°C | -3.1°C | 15 mm | 67% | 0.5 m/s | 3 |
| 2024 | 16.5°C | 11.2°C | 5.9°C | 25.6°C | 0.2°C | 12 mm | 69% | 0.6 m/s | 2.9 |
| 2023 | 15.7°C | 11.6°C | 7.4°C | 29.3°C | -2.0°C | 21 mm | 76% | 0.5 m/s | 2.3 |
| 2022 | 15.7°C | 10.1°C | 4.4°C | 22.9°C | -0.5°C | 22 mm | 69% | 0.5 m/s | 2.8 |
| 2021 🔥 | 18.1°C | 13.4°C | 8.8°C | 25.5°C | 0.4°C | 24 mm | 77% | 0.5 m/s | 2.3 |
| 2020 | 12.0°C | 7.7°C | 3.5°C | 23.5°C | -5.2°C | 30 mm | 74% | 0.5 m/s | 2.3 |
| 2019 | 14.2°C | 9.5°C | 4.9°C | 23.5°C | 0.9°C | 56 mm | 76% | 0.6 m/s | 2.6 |
| 2018 | 12.6°C | 8.0°C | 3.4°C | 27.6°C | -4.3°C | 28 mm | 74% | 0.5 m/s | 2 |
| 2017 | 17.1°C | 12.4°C | 7.6°C | 25.3°C | 1.5°C | 43 mm | 74% | 0.6 m/s | 2.6 |
| 2016 | 15.5°C | 10.6°C | 5.6°C | 27.6°C | -4.1°C | 19 mm | 73% | 0.5 m/s | 2.5 |
| 2015 | 13.2°C | 8.5°C | 3.8°C | 23.0°C | -2.7°C | 37 mm | 71% | 0.6 m/s | 2.5 |
| 2014 | 13.8°C | 9.5°C | 5.3°C | 23.3°C | -1.0°C | 42 mm | 80% | 0.6 m/s | 2.1 |
| 2013 | 14.7°C | 10.0°C | 5.4°C | 23.9°C | -5.0°C | 58 mm | 77% | 0.5 m/s | 2.6 |
| 2012 | 13.7°C | 9.6°C | 5.4°C | 22.4°C | -0.5°C | 41 mm | 77% | 0.6 m/s | 2.1 |
| 2011 | 14.7°C | 10.0°C | 5.4°C | 25.9°C | -1.8°C | 47 mm | 74% | 0.5 m/s | 2.4 |
| 2010 | 13.6°C | 8.9°C | 4.2°C | 21.1°C | -3.7°C | 25 mm | 71% | 0.6 m/s | 2.9 |
| 2009 | 11.4°C | 7.2°C | 3.1°C | 17.8°C | -4.4°C | 47 mm | 78% | 0.5 m/s | 2.1 |
| 2008 | 13.3°C | 8.3°C | 3.2°C | 24.7°C | -4.7°C | 17 mm | 74% | 0.6 m/s | 2.7 |
| 2007 | 17.2°C | 12.3°C | 7.5°C | 27.4°C | 1.3°C | 55 mm | 80% | 0.5 m/s | 2.2 |
| 2006 | 11.7°C | 7.4°C | 3.1°C | 23.2°C | -3.8°C | 136 mm | 82% | 0.5 m/s | 2.3 |
| 2005 | 15.5°C | 10.6°C | 5.8°C | 29.1°C | -1.6°C | 18 mm | 76% | 0.5 m/s | 2.4 |
| 2004 | 14.1°C | 9.4°C | 4.7°C | 23.3°C | -0.6°C | 73 mm | 77% | 0.6 m/s | 2.5 |
| 2003 | 11.6°C | 7.4°C | 3.2°C | 24.4°C | -3.7°C | 125 mm | 83% | 0.5 m/s | 2.5 |
| 2002 | 11.4°C | 6.9°C | 2.4°C | 25.0°C | -4.9°C | 69 mm | 77% | 0.5 m/s | 2.4 |
| 2001 🌧️ | 12.5°C | 8.3°C | 4.1°C | 23.8°C | -3.8°C | 150 mm | 83% | 0.5 m/s | 2.1 |
| 2000 | 13.8°C | 9.0°C | 4.1°C | 21.6°C | -4.0°C | 41 mm | 79% | 0.5 m/s | 2.5 |
| 1999 | 12.2°C | 7.5°C | 2.8°C | 22.1°C | -4.6°C | 74 mm | 76% | 0.5 m/s | 2.5 |
| 1998 | 14.7°C | 9.7°C | 4.7°C | 19.6°C | -2.1°C | 36 mm | 73% | 0.5 m/s | 3 |
| 1997 | 13.3°C | 8.3°C | 3.3°C | 25.3°C | -4.0°C | 54 mm | 75% | 0.5 m/s | 2.8 |
| 1996 | 12.8°C | 7.9°C | 2.9°C | 22.4°C | -4.4°C | 63 mm | 79% | 0.5 m/s | 2.2 |
| 1995 | 13.3°C | 9.2°C | 5.0°C | 23.6°C | -1.5°C | 95 mm | 78% | 0.4 m/s | 2.2 |
| 1994 | 14.7°C | 9.3°C | 4.0°C | 24.3°C | -2.0°C | 34 mm | 73% | 0.5 m/s | 2.8 |
| 1993 | 11.1°C | 6.4°C | 1.7°C | 21.0°C | -4.7°C | 109 mm | 79% | 0.5 m/s | 2.2 |
| 1992 | 11.0°C | 6.1°C | 1.2°C | 19.0°C | -5.0°C | 72 mm | 80% | 0.5 m/s | 2.3 |
| 1991 | 13.8°C | 9.1°C | 4.4°C | 22.0°C | -2.2°C | 96 mm | 77% | 0.5 m/s | 2.4 |
| 1990 | 12.4°C | 7.5°C | 2.6°C | 24.2°C | -4.8°C | 109 mm | 80% | 0.5 m/s | 2.6 |
| 1989 | 13.3°C | 8.4°C | 3.4°C | 21.8°C | -2.7°C | 66 mm | 78% | 0.5 m/s | 2.4 |
| 1988 | 10.3°C | 6.3°C | 2.3°C | 24.2°C | -5.2°C | 93 mm | 77% | 0.5 m/s | 2.4 |
| 1987 | 10.9°C | 6.3°C | 1.7°C | 21.4°C | -2.8°C | 46 mm | 74% | 0.4 m/s | 2.5 |
| 1986 | 12.3°C | 7.3°C | 2.3°C | 18.0°C | -5.3°C | 39 mm | 78% | 0.4 m/s | 2.8 |
| 1985 | 12.4°C | 7.8°C | 3.2°C | 17.4°C | -5.2°C | 71 mm | 79% | 0.4 m/s | 2.6 |
| 1984 | 14.7°C | 9.6°C | 4.5°C | 21.8°C | -4.0°C | 65 mm | 79% | 0.4 m/s | 2.7 |
| 1983 | 12.7°C | 7.8°C | 2.8°C | 24.4°C | -4.5°C | 74 mm | 77% | 0.5 m/s | — |
| 1982 | 13.4°C | 8.5°C | 3.6°C | 22.6°C | -4.4°C | 57 mm | 80% | 0.4 m/s | — |
| 1981 ❄️ | 10.0°C | 5.4°C | 0.8°C | 14.9°C | -4.1°C | 75 mm | 83% | 0.5 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 13.5°C with lows near 4.1°C (mean 8.8°C), based on 45 years of NASA POWER data.
October averages 57 mm of rainfall in Gravenhurst, about average for rainfall. The wettest on record was 150 mm in 2001.
The hottest October reached 29.8°C in 2025. The coldest dipped to -5.3°C in 1986.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 3.7°C. Daytime highs moved from 12.6°C to 16.6°C and overnight lows from 3°C to 6.4°C over the same span.
October is one of the warmer months of the year in Gravenhurst and about average for rainfall, so plan for around 13.5°C daytime highs and 4.1°C at night.
Not quite — October is the 7th coolest month in Gravenhurst, averaging 8.8°C.
For October in Gravenhurst, pack warm layers and a jacket for chilly mornings, with typical highs of 13.5°C and lows of 4.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 77% — quite humid.
Average wind speed in October is 0.5 m/s. The windiest October on record averaged 0.6 m/s (2004).
The wettest October on record was 2001 with 150 mm. On average, October sees 57 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 Gravenhurst 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.
