Live Weather & Forecast
Weather in Saint Catharines
Ontario, Canada · Real-time conditions & 3-day outlook
6°C
Feels like 1°C
43°F / Feels 34°F
Light rain
Saint Catharines, Ontario
🌞 Daytime
Updated: 2026-04-25 10:15
Humidity
100%
Wind
41.4 km/h NE
Wind Gust
56.2 km/h
Pressure
1010 mb
Visibility
8 km
UV Index
0.2
(Low)
Precipitation
4.71 mm
Cloud Cover
100%
Dew Point
6.7°C
Wind Degree
51°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
177.9 μg/m³
NO₂
7.5 μg/m³
O₃
71 μg/m³
SO₂
2.3 μg/m³
PM 2.5
11.1 μg/m³
PM 10
11.6 μg/m³
Today's Hourly Forecast
24-hour breakdown for Saint Catharines, Ontario
12 AM
8°
Patchy rain nearby
1 AM
8°
Patchy rain nearby
2 AM
7°
Patchy rain nearby
3 AM
7°
Patchy rain nearby
4 AM
7°
Patchy rain nearby
5 AM
7°
Patchy rain nearby
6 AM
7°
Light drizzle
7 AM
7°
Light rain
8 AM
7°
Light rain
9 AM
7°
Moderate rain at times
10 AM
6°
Light rain
11 AM
8°
Moderate rain
12 PM
8°
Light rain
1 PM
8°
Light drizzle
2 PM
8°
Light drizzle
3 PM
8°
Light drizzle
4 PM
8°
Patchy rain nearby
5 PM
7°
Patchy rain nearby
6 PM
6°
Overcast
7 PM
6°
Cloudy
8 PM
6°
Overcast
9 PM
6°
Partly Cloudy
10 PM
5°
Partly Cloudy
11 PM
5°
Partly Cloudy
3-Day Forecast
Daily overview for Saint Catharines, Ontario
Today
Moderate rain
9°
/
5°
🌧️ 89% chance of rain
💧 Avg. humidity: 85%
💨 Max wind: 41.4 km/h
🌧️ Total precip: 18.13 mm
☀️ UV Index: 0.5
🌅 Sunrise: 06:18 AM
🌇 Sunset: 08:11 PM
🌙 Waxing Gibbous
🌑 Moon: 60% lit
Sun, Apr 26
Partly Cloudy
10°
/
4°
🌧️ 0% chance of rain
💧 Avg. humidity: 84%
💨 Max wind: 19.1 km/h
🌧️ Total precip: 0.02 mm
☀️ UV Index: 5.5
🌅 Sunrise: 06:17 AM
🌇 Sunset: 08:12 PM
🌙 Waxing Gibbous
🌑 Moon: 70% lit
Mon, Apr 27
Sunny
14°
/
6°
🌧️ 0% chance of rain
💧 Avg. humidity: 76%
💨 Max wind: 22.3 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 6.6
🌅 Sunrise: 06:15 AM
🌇 Sunset: 08:13 PM
🌙 Waxing Gibbous
🌑 Moon: 79% lit
Best Time to Visit Saint Catharines
Plan your trip to Saint Catharines, Canada around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Saint Catharines?
Current conditions in Saint Catharines: Light rain, temperature 6°C, humidity 100%.
What is the best time to visit Saint Catharines?
The best time to visit Saint Catharines is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Saint Catharines?
Saint Catharines is located at approximately 43.2° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Saint Catharines?
The wettest period in Saint Catharines is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Saint Catharines?
For visits to Saint Catharines during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Saint Catharines in?
What are the public holidays in Saint Catharines in 2026?
View the 2026 public holidays for Saint Catharines on our Holidays page.
What are the GPS coordinates used for the weather forecast in Saint Catharines?
The weather forecast for Saint Catharines uses coordinates 43.158, -79.2441.
What is the current temperature outside in Saint Catharines?
The current outdoor temperature in Saint Catharines is 6°C (43°F) with light rain.
What is the hourly weather forecast for Saint Catharines today?
Today's hour-by-hour weather breakdown for Saint Catharines is shown in the Hourly Forecast section above, including temperature, rain chance, and conditions for each hour of the day.
What is the weather in Saint Catharines tomorrow hour by hour?
Tomorrow's forecast for Saint Catharines shows a high of 10°C and a low of 4°C. See the 3-Day Forecast section above for a full hourly breakdown.
What is the chance of rain today in Saint Catharines?
There is a 89% chance of rain in Saint Catharines today. Check the hourly forecast above for a time-by-time breakdown of when rain is most likely.
Is it going to rain today in Saint Catharines?
Yes, there is a 89% chance of rain in Saint Catharines today — consider carrying an umbrella. Check the hourly forecast above for the most likely rain windows.