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Weather in St. Catharines for October 2026

Your guide to St. Catharines weather in October - trends and predictions

    Temperatures

  • Until now, October 2026 in St. Catharines has been nearly identical to the historical average, with a temperature of 17 °C (showing only a slight deviation of 0.1 °C).

  • The forecast for the coming days of October 2026 predicts a temperature of 14.2 °C , which is warmer than usual.

  • In general, the average temperature in St. Catharines at the beginning of October is 20.9 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 12.7 °C by the end of October.

    • Rain 🌧️

  • St. Catharines experiences moderate rainfall in October, with an average of 10 rainy days and a total precipitation of 108.2 mm.

    • More

  • Is October a good time to visit St. Catharines? check out the best time to travel to St. Catharines page.

  • ✨ Is October a good time to visit St. Catharines? – Ask the AI Weatherman

Average dry days
21
Dry days
Average rainy days
10
Rainy days
Average snowy days
0
Snow days
Average temperatures
16°/9°
Temperatures
Average wind speed
27 km/h
Avg max wind
Average humidity
73 %
Avg humidity

St. Catharines Weather October

Move between months or click on a day
September
November
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Patchy rain possible
21°
2
Light rain
21°
3
Sunny
23°
4
Mist
23°
5
Patchy light drizzle
22°
6
Light rain
20°
7
Light rain
18°
8
Light rain
15°
9
Cloudy
15°
10
Overcast
15°
11
Patchy rain possible
17°
12
Partly cloudy
18°
13
Light rain
15°
14
Light drizzle
14°
15
Light rain shower
12°
16
Light rain
15°
17
Patchy rain possible
12°
18
Sunny
18°
19
Moderate rain
19°
20
Moderate rain
16°
21
Sunny
16°
22
Moderate rain
14°
23
Overcast
13°
24
Overcast
14°
25
Light drizzle
16°
26
Light rain
14°
27
Partly cloudy
11°
28
Overcast
13°
29
Light rain
19°
30
Sunny
15°
31
Overcast
13°

Temperatures trend during October in St. Catharines

See the weather trend as well as the moving average line

October weather in St. Catharines day by day

Click on a date for more information
September November
Date Weather Temperatures Rain UV More
1 Oct. Patchy rain possible
Patchy rain possible
 21° /14° 1 mm 4
2 Oct. Light rain
Light rain
 21° /12° 6.7 mm 4
3 Oct. Sunny
Sunny
 23° /12° 0 mm 4.7
4 Oct. Mist
Mist
 23° /13° 0.2 mm 4.6
5 Oct. Patchy light drizzle
Patchy light drizzle
 22° /14° 0.1 mm 4.5
6 Oct. Light rain
Light rain
 20° /12° 5.1 mm 4.4
7 Oct. Light rain
Light rain
 18° /12° 9.2 mm 3
8 Oct. Light rain
Light rain
 15° /10° 2.7 mm 4
9 Oct. Cloudy
Cloudy
 15° /8° 0 mm 3
10 Oct. Overcast
Overcast
 15° /7° 0.1 mm 3
11 Oct. Patchy rain possible
Patchy rain possible
 17° /10° 2.2 mm 3
12 Oct. Partly cloudy
Partly cloudy
 18° /11° 0 mm 3.9
13 Oct. Light rain
Light rain
 15° /11° 3.6 mm 3
14 Oct. Light drizzle
Light drizzle
 14° /9° 1.1 mm 3
15 Oct. Light rain shower
Light rain shower
 12° /9° 2 mm 3
16 Oct. Light rain
Light rain
 15° /8° 2.6 mm 3
17 Oct. Patchy rain possible
Patchy rain possible
 12° /6° 2.4 mm 3
18 Oct. Sunny
Sunny
 18° /7° 0 mm 3.5
19 Oct. Moderate rain
Moderate rain
 19° /11° 10.5 mm 3.4
20 Oct. Moderate rain
Moderate rain
 16° /9° 14 mm 3
21 Oct. Sunny
Sunny
 16° /9° 0.2 mm 3.3
22 Oct. Moderate rain
Moderate rain
 14° /8° 12.5 mm 3
23 Oct. Overcast
Overcast
 13° /8° 0.9 mm 3
24 Oct. Overcast
Overcast
 14° /6° 0 mm 3
25 Oct. Light drizzle
Light drizzle
 16° /8° 0.8 mm 3
26 Oct. Light rain
Light rain
 14° /9° 0.6 mm 2.9
27 Oct. Partly cloudy
Partly cloudy
 11° /8° 0 mm 3
28 Oct. Overcast
Overcast
 13° /8° 0.1 mm 2.8
29 Oct. Light rain
Light rain
 19° /13° 4 mm 2.8
30 Oct. Sunny
Sunny
 15° /11° 0.1 mm 2.9
31 Oct. Overcast
Overcast
 13° /9° 0 mm 4
Next
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.
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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?
Significant rainfall exceeding 108.2 mm is expected in St. Catharines during October, occurring over more than 10 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in St. Catharines during October?
The average wind speed in St. Catharines during October is 27 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 💧
Typically, St. Catharines has 10 rainy days in October with a total of 108.2 mm of rainfall.

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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Location coordinates Where is St. Catharines?

Get accurate weather forecasts for St. Catharines, located at latitude 43.171 and longitude -79.243. Stay updated with localized weather information tailored for St. Catharines.

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