October is one of the warmer months of the year in Simcoe, with average highs near 15.4°C and lows around 6.1°C (mean 10.8°C). It is about average for rainfall, averaging 68 mm of rainfall and 77% relative humidity across the period.
October is one of the warmer months of the year in Simcoe. Across 45 years of records, the warmest October in Simcoe was 2007 — when the month averaged 15.1°C — while the coldest was 1988 at 7.4°C. Typical October days reach 15.4°C with nights near 6.1°C. The long-term trend is warming, about 0.7°C per decade.
October is about average for rainfall in Simcoe, averaging 68 mm of rainfall. The wettest October on record was 2012 with 130 mm, while the driest was 1994 at 21 mm.
Relative humidity in Simcoe during October averages 77%. The most humid October was 1986 at 83%, and the least humid was 2024 at 68%.
October receives about 2.7 kWh/m²/day of solar energy in Simcoe. The sunniest Octobers were 2024 and 2025 at 3.3 kWh/m²/day, and the cloudiest was 2009 at 2.2.
Average wind speed in Simcoe during October is 3.4 m/s. The windiest October was 1995 at 4.1 m/s, while the calmest was 1984 at 2.6 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 9.7°C | 10.3°C | 10.6°C | 11.5°C | 12.6°C | +2.9°C |
| Avg High | 14.4°C | 15.2°C | 15.0°C | 15.9°C | 17.3°C | +2.9°C |
| Avg Low | 5.0°C | 5.3°C | 6.1°C | 7.0°C | 7.8°C | +2.8°C |
| Avg Rain | 79 mm | 53 mm | 76 mm | 80 mm | 44 mm | -35 mm |
October temperatures in Simcoe have risen by about 2.5°C between 1981–1985 and 2021–2025.
October has ranged from a record low of -3.7°C (1990) to a record high of 30°C (2007).
Rainfall in October is about average for rainfall, averaging 68 mm, with a wettest year of 130 mm.
A good time to visit Simcoe
October is a good time to visit Simcoe, with days averaging 15.4°C and nights around 6.1°C (mean 10.8°C, warmer than Simcoe's yearly average) and moderate 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 | 17.8°C | 12.8°C | 7.7°C | 28.3°C | 1.3°C | 52 mm | 72% | 3.3 m/s | 3.3 |
| 2024 | 18.4°C | 12.9°C | 7.3°C | 25.2°C | 0.8°C | 24 mm | 68% | 3.2 m/s | 3.3 |
| 2023 | 17.0°C | 12.8°C | 8.5°C | 29.0°C | -0.6°C | 57 mm | 75% | 3.4 m/s | 2.5 |
| 2022 | 16.3°C | 11.3°C | 6.3°C | 25.0°C | 2.1°C | 24 mm | 69% | 3.4 m/s | 3.1 |
| 2021 | 19.1°C | 14.9°C | 10.8°C | 26.9°C | 4.3°C | 63 mm | 80% | 3.2 m/s | 2.4 |
| 2020 | 15.2°C | 10.7°C | 6.2°C | 24.8°C | -3.6°C | 42 mm | 73% | 3.6 m/s | 2.6 |
| 2019 | 16.2°C | 11.6°C | 7.0°C | 28.5°C | 1.9°C | 108 mm | 80% | 3.4 m/s | 2.7 |
| 2018 | 14.7°C | 10.1°C | 5.6°C | 26.8°C | -1.7°C | 80 mm | 81% | 3.7 m/s | 2.3 |
| 2017 | 18.3°C | 13.7°C | 9.2°C | 25.9°C | 1.4°C | 67 mm | 77% | 3.6 m/s | 2.8 |
| 2016 | 17.3°C | 12.4°C | 7.4°C | 25.5°C | -1.4°C | 34 mm | 76% | 3.2 m/s | 2.8 |
| 2015 | 15.4°C | 11.0°C | 6.6°C | 22.7°C | -0.3°C | 71 mm | 74% | 4 m/s | 2.8 |
| 2014 | 15.8°C | 11.4°C | 7.0°C | 25.2°C | 0.2°C | 62 mm | 79% | 3.6 m/s | 2.5 |
| 2013 | 16.2°C | 11.9°C | 7.5°C | 25.1°C | -1.4°C | 91 mm | 80% | 3.2 m/s | 2.7 |
| 2012 🌧️ | 14.6°C | 10.7°C | 6.7°C | 22.6°C | 2.4°C | 130 mm | 81% | 3.7 m/s | 2.3 |
| 2011 | 15.5°C | 11.3°C | 7.0°C | 26.3°C | -1.3°C | 89 mm | 77% | 3.3 m/s | 2.4 |
| 2010 | 15.2°C | 10.7°C | 6.2°C | 22.9°C | -0.9°C | 66 mm | 76% | 3.5 m/s | 2.8 |
| 2009 | 13.4°C | 9.3°C | 5.1°C | 17.7°C | -1.9°C | 74 mm | 79% | 3.5 m/s | 2.2 |
| 2008 | 14.7°C | 9.7°C | 4.8°C | 24.3°C | -3.1°C | 59 mm | 75% | 3.4 m/s | 3.1 |
| 2007 🔥 | 19.8°C | 15.1°C | 10.4°C | 30.0°C | 1.5°C | 48 mm | 74% | 3.3 m/s | 2.8 |
| 2006 | 13.4°C | 9.0°C | 4.7°C | 22.9°C | -1.0°C | 111 mm | 82% | 3.9 m/s | 2.4 |
| 2005 | 15.7°C | 11.6°C | 7.5°C | 27.1°C | -0.5°C | 67 mm | 80% | 3.2 m/s | 2.7 |
| 2004 | 15.9°C | 11.6°C | 7.3°C | 25.1°C | 2.3°C | 67 mm | 78% | 3.5 m/s | 2.6 |
| 2003 | 13.3°C | 8.8°C | 4.3°C | 22.2°C | -2.2°C | 82 mm | 81% | 3.1 m/s | 2.7 |
| 2002 | 13.4°C | 8.9°C | 4.5°C | 25.8°C | -2.5°C | 75 mm | 79% | 3.2 m/s | 2.5 |
| 2001 | 14.6°C | 10.3°C | 6.0°C | 23.5°C | -0.8°C | 119 mm | 80% | 3.9 m/s | 2.6 |
| 2000 | 16.0°C | 11.2°C | 6.4°C | 23.2°C | -1.3°C | 55 mm | 81% | 2.9 m/s | 2.9 |
| 1999 | 14.4°C | 9.5°C | 4.7°C | 21.4°C | -1.5°C | 72 mm | 76% | 3.3 m/s | 3 |
| 1998 | 17.2°C | 12.1°C | 7.0°C | 23.6°C | 0.4°C | 42 mm | 71% | 3.4 m/s | 3.2 |
| 1997 | 15.8°C | 10.8°C | 5.8°C | 26.5°C | -1.1°C | 45 mm | 73% | 3.1 m/s | 3 |
| 1996 | 14.7°C | 10.0°C | 5.2°C | 23.3°C | -2.2°C | 55 mm | 78% | 3.7 m/s | 2.7 |
| 1995 | 16.1°C | 11.4°C | 6.8°C | 24.5°C | 0.8°C | 51 mm | 76% | 4.1 m/s | 2.5 |
| 1994 | 16.2°C | 11.0°C | 5.7°C | 23.3°C | 1.4°C | 21 mm | 72% | 3 m/s | 3 |
| 1993 | 13.9°C | 8.6°C | 3.3°C | 24.0°C | -2.8°C | 53 mm | 75% | 3.9 m/s | 2.5 |
| 1992 | 13.0°C | 8.2°C | 3.4°C | 21.9°C | -2.5°C | 64 mm | 79% | 3.4 m/s | 2.5 |
| 1991 | 16.0°C | 11.1°C | 6.3°C | 24.7°C | -1.6°C | 53 mm | 73% | 3.5 m/s | 2.7 |
| 1990 | 14.6°C | 9.9°C | 5.2°C | 23.4°C | -3.7°C | 71 mm | 79% | 3.9 m/s | 2.5 |
| 1989 | 15.6°C | 10.5°C | 5.4°C | 22.8°C | -1.4°C | 44 mm | 77% | 3.5 m/s | 2.7 |
| 1988 ❄️ | 11.2°C | 7.4°C | 3.6°C | 25.7°C | -3.3°C | 104 mm | 79% | 3.7 m/s | 2.3 |
| 1987 | 12.2°C | 7.5°C | 2.8°C | 18.7°C | -1.5°C | 117 mm | 78% | 3.3 m/s | 2.7 |
| 1986 | 14.2°C | 9.7°C | 5.2°C | 20.4°C | -0.8°C | 99 mm | 83% | 3.2 m/s | 2.6 |
| 1985 | 15.3°C | 10.7°C | 6.0°C | 20.5°C | -1.3°C | 117 mm | 76% | 3.3 m/s | 2.6 |
| 1984 | 17.3°C | 12.1°C | 6.9°C | 21.3°C | 2.4°C | 31 mm | 76% | 2.6 m/s | 3 |
| 1983 | 15.2°C | 10.7°C | 6.2°C | 24.8°C | -1.2°C | 68 mm | 75% | 3.7 m/s | — |
| 1982 | 15.9°C | 10.8°C | 5.6°C | 24.2°C | -2.3°C | 61 mm | 79% | 3 m/s | — |
| 1981 | 12.4°C | 7.9°C | 3.3°C | 18.8°C | -3.3°C | 71 mm | 81% | 3.5 m/s | — |
Actual recorded October data for each year, 1981–2025 — sourced from NASA POWER.
The average high in October is around 15.4°C with lows near 6.1°C (mean 10.8°C), based on 45 years of NASA POWER data.
October averages 68 mm of rainfall in Simcoe, about average for rainfall. The wettest on record was 130 mm in 2012.
The hottest October reached 30°C in 2007. The coldest dipped to -3.7°C in 1990.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average October temperatures have risen by about 2.5°C. Daytime highs moved from 15.2°C to 17.7°C and overnight lows from 5.6°C to 8.1°C over the same span.
October is one of the warmer months of the year in Simcoe and about average for rainfall, so plan for around 15.4°C daytime highs and 6.1°C at night.
Not quite — October is the 7th coolest month in Simcoe, averaging 10.8°C.
For October in Simcoe, pack warm layers and a jacket for chilly mornings, with typical highs of 15.4°C and lows of 6.1°C. Bring an umbrella or light rain jacket too.
Relative humidity in October averages 77% — quite humid.
Average wind speed in October is 3.4 m/s. The windiest October on record averaged 4.1 m/s (1995).
The wettest October on record was 2012 with 130 mm. On average, October sees 68 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 Simcoe 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.
