Ontario
October
Weather in Ontario for October 2025
Your guide to Ontario weather in October - trends and predictions
In general, the average temperature in Ontario at the beginning of October is 22 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14.4 °C by the end of October.
Expect significant rainfall in Ontario during October, with an average of 16 rainy days.
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15
Dry days
16
Rainy days
0
Snow days
16°/9°
Temperatures
17 km/h
Avg max wind
68 %
Avg humidity
Ontario in October average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  24° | 2 23° | 3  26° | 4 23° | 5 22° | ||
| 6  21° | 7  15° | 8  12° | 9  12° | 10 13° | 11 18° | 12 15° |
| 13  12° | 14 11° | 15 9° | 16 13° | 17 16° | 18 16° | 19 17° |
| 20 17° | 21 17° | 22  14° | 23 16° | 24 14° | 25 17° | 26 16° |
| 27 16° | 28 14° | 29  11° | 30 14° | 31 13° |
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Temperatures trend during October in Ontario
See the weather trend as well as the moving average line
October weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Oct. | Partly cloudy | 24° /15° | 2.9 mm | 6 | |
| 2 Oct. | Partly cloudy | 23° /14° | 6.6 mm | 6 | |
| 3 Oct. | Mist | 26° /12° | 0 mm | 7 | |
| 4 Oct. | Mist | 23° /14° | 0 mm | 5 | |
| 5 Oct. | Mist | 22° /11° | 1 mm | 5 | |
| 6 Oct. | Moderate or heavy rain shower | 21° /12° | 19.5 mm | 5 | |
| 7 Oct. | Moderate or heavy rain with thunder | 15° /8° | 6.2 mm | 4 | |
| 8 Oct. | Light drizzle | 12° /7° | 0.2 mm | 3 | |
| 9 Oct. | Patchy rain possible | 12° /5° | 0 mm | 3 | |
| 10 Oct. | Partly cloudy | 13° /5° | 0 mm | 4 | |
| 11 Oct. | Light rain shower | 18° /5° | 0.4 mm | 4 | |
| 12 Oct. | Mist | 15° /8° | 0 mm | 4 | |
| 13 Oct. | Overcast | 12° /6° | 0 mm | 3 | |
| 14 Oct. | Patchy rain possible | 11° /6° | 0.4 mm | 3 | |
| 15 Oct. | Patchy rain possible | 9° /3° | 0.1 mm | 3 | |
| 16 Oct. | Overcast | 13° /5° | 0.1 mm | 4 | |
| 17 Oct. | Overcast | 16° /3° | 0 mm | 4 | |
| 18 Oct. | Overcast | 16° /5° | 0 mm | 4 | |
| 19 Oct. | Light rain | 17° /8° | 0.7 mm | 4 | |
| 20 Oct. | Light rain shower | 17° /9° | 2.4 mm | 4 | |
| 21 Oct. | Overcast | 17° /9° | 0 mm | 5 | |
| 22 Oct. | Light sleet showers | 14° /8° | 0.4 mm | 4 | |
| 23 Oct. | Overcast | 16° /5° | 0 mm | 4 | |
| 24 Oct. | Light rain shower | 14° /6° | 0.4 mm | 4 | |
| 25 Oct. | Light drizzle | 17° /10° | 1.3 mm | 4 | |
| 26 Oct. | Light rain | 16° /10° | 0.8 mm | 4 | |
| 27 Oct. | Patchy rain possible | 16° /10° | 0.4 mm | 5 | |
| 28 Oct. | Partly cloudy | 14° /4° | 0.3 mm | 4 | |
| 29 Oct. | Moderate rain | 11° /6° | 6.5 mm | 3 | |
| 30 Oct. | Light rain shower | 14° /8° | 0.8 mm | 3 | |
| 31 Oct. | Partly cloudy | 13° /7° | 0.1 mm | 4 | |
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Important Notice
Our weather forecast for Ontario in October is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Ontario forecast closer to your planned date for the most up-to-date weather information.
Ontario in October - FAQ
What are the expected maximum and minimum temperatures in Ontario during October?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 9°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Ontario during October?
Moderate rainfall is anticipated in Ontario during October, with a total of 70.3 mm spread over approximately 16 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Ontario during October?
The average wind speed in Ontario during October is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
October rainfall patterns in Ontario
Explore the daily rainfall trends and prepare for Ontarios October weather 💧
UV exposure in Ontario during October
Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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