St. Catharines
October
Weather in St. Catharines for October 2025
Your guide to St. Catharines weather in October - trends and predictions
In general, the average temperature in St. Catharines at the beginning of October is 21.3 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 14.6 °C by the end of October.
Expect significant rainfall in St. Catharines during October, with an average of 18 rainy days.
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13
Dry days
18
Rainy days
0
Snow days
16°/9°
Temperatures
26 km/h
Avg max wind
72 %
Avg humidity
St. Catharines in October average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  22° | 2 23° | 3  25° | 4 22° | 5  22° | ||
| 6  20° | 7 15° | 8 13° | 9  13° | 10 12° | 11 19° | 12  16° |
| 13 12° | 14 10° | 15 10° | 16 12° | 17 15° | 18 16° | 19 16° |
| 20 17° | 21 18° | 22 16° | 23 15° | 24 16° | 25 17° | 26 16° |
| 27 16° | 28 15° | 29  12° | 30 13° | 31  13° |
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Temperatures trend during October in St. Catharines
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. | Mist | 22° /14° | 0 mm | 5 | |
| 2 Oct. | Fog | 23° /14° | 0 mm | 5 | |
| 3 Oct. | Overcast | 25° /12° | 0 mm | 6 | |
| 4 Oct. | Mist | 22° /13° | 0 mm | 5 | |
| 5 Oct. | Patchy light drizzle | 22° /15° | 0.2 mm | 6 | |
| 6 Oct. | Light rain shower | 20° /12° | 10.2 mm | 5 | |
| 7 Oct. | Light rain | 15° /10° | 1.3 mm | 4 | |
| 8 Oct. | Light rain shower | 13° /8° | 0.9 mm | 4 | |
| 9 Oct. | Cloudy | 13° /6° | 0 mm | 3 | |
| 10 Oct. | Patchy rain possible | 12° /8° | 0.2 mm | 3 | |
| 11 Oct. | Patchy rain possible | 19° /6° | 0.1 mm | 5 | |
| 12 Oct. | Partly cloudy | 16° /10° | 0 mm | 5 | |
| 13 Oct. | Cloudy | 12° /7° | 1.5 mm | 3 | |
| 14 Oct. | Light drizzle | 10° /7° | 1.8 mm | 3 | |
| 15 Oct. | Light rain shower | 10° /6° | 4 mm | 3 | |
| 16 Oct. | Light rain shower | 12° /7° | 1.4 mm | 3 | |
| 17 Oct. | Patchy rain possible | 15° /6° | 0 mm | 4 | |
| 18 Oct. | Patchy rain possible | 16° /5° | 0 mm | 5 | |
| 19 Oct. | Patchy rain possible | 16° /8° | 1.1 mm | 4 | |
| 20 Oct. | Light rain shower | 17° /9° | 1 mm | 4 | |
| 21 Oct. | Patchy rain possible | 18° /11° | 0.3 mm | 5 | |
| 22 Oct. | Light rain shower | 16° /8° | 0.6 mm | 4 | |
| 23 Oct. | Overcast | 15° /7° | 1.8 mm | 4 | |
| 24 Oct. | Overcast | 16° /6° | 0 mm | 4 | |
| 25 Oct. | Light drizzle | 17° /8° | 1.6 mm | 4 | |
| 26 Oct. | Light rain | 16° /11° | 0.9 mm | 4 | |
| 27 Oct. | Partly cloudy | 16° /11° | 0.2 mm | 5 | |
| 28 Oct. | Light rain | 15° /6° | 1.7 mm | 4 | |
| 29 Oct. | Moderate rain | 12° /7° | 3.2 mm | 3 | |
| 30 Oct. | Light rain shower | 13° /9° | 2.4 mm | 3 | |
| 31 Oct. | Patchy snow possible | 13° /8° | 0.4 mm | 4 | |
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Important Notice
Our weather forecast for St. Catharines 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 St. Catharines forecast closer to your planned date for the most up-to-date weather information.
St. Catharines in October - FAQ
What are the expected maximum and minimum temperatures in St. Catharines 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 St. Catharines during October?
In October, St. Catharines can expect light to moderate rainfall, totaling 46.8 mm across approximately 18 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in St. Catharines during October?
The average wind speed in St. Catharines during October is 26 km/h, suggesting breezy to windy conditions, depending on your activities.
October rainfall patterns in St. Catharines
Explore the daily rainfall trends and prepare for St. Cathariness October weather 💧
UV exposure in St. Catharines during October
Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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