Live Weather & Forecast

Weather in Saint Catharines-Niagara

Ontario, Canada · Real-time conditions & 3-day outlook

Flag of Canada
Clear
6°C
Feels like 2°C
43°F / Feels 36°F
Clear
Saint Catharines-Niagara, Ontario
🌙 Nighttime
Updated: 2026-04-24 23:45
💧
Humidity
82%
💨
Wind
24.8 km/h E
🌬️
Wind Gust
42.3 km/h
🌡️
Pressure
1011 mb
👁️
Visibility
10 km
☀️
UV Index
0 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
0%
💦
Dew Point
-2.5°C
🌐
Wind Degree
95°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
175.9 μg/m³
NO₂
4.6 μg/m³
O₃
81 μg/m³
SO₂
1.6 μg/m³
PM 2.5
3.8 μg/m³
PM 10
4.1 μg/m³

Today's Hourly Forecast

24-hour breakdown for Saint Catharines-Niagara, Ontario

12 AM
Clear
Clear
💧 54% 💨 15.5 km/h
1 AM
Clear
Clear
💧 81% 💨 14.8 km/h
2 AM
Clear
Clear
💧 77% 💨 15.5 km/h
3 AM
Clear
Clear
💧 81% 💨 17.3 km/h
4 AM
Clear
Clear
💧 75% 💨 16.9 km/h
5 AM
Clear
Clear
💧 71% 💨 25.6 km/h
6 AM
Clear
Clear
💧 69% 💨 27.4 km/h
7 AM
Sunny
Sunny
💧 53% 💨 28.1 km/h
8 AM
Sunny
Sunny
💧 57% 💨 25.9 km/h
9 AM
Sunny
Sunny
💧 56% 💨 25.2 km/h
10 AM
Sunny
Sunny
💧 66% 💨 26.6 km/h
11 AM
Overcast
Overcast
💧 60% 💨 29.5 km/h
12 PM
Overcast
11°
Overcast
💧 52% 💨 28.1 km/h
1 PM
Partly Cloudy
11°
Partly Cloudy
💧 56% 💨 29.2 km/h
2 PM
Sunny
12°
Sunny
💧 67% 💨 28.1 km/h
3 PM
Sunny
13°
Sunny
💧 65% 💨 25.6 km/h
4 PM
Sunny
14°
Sunny
💧 59% 💨 25.2 km/h
5 PM
Sunny
14°
Sunny
💧 58% 💨 26.6 km/h
6 PM
Sunny
14°
Sunny
💧 51% 💨 23.4 km/h
7 PM
Sunny
11°
Sunny
💧 53% 💨 25.9 km/h
8 PM
Sunny
10°
Sunny
💧 54% 💨 22.3 km/h
9 PM
Clear
Clear
💧 56% 💨 23.4 km/h
10 PM
Clear
Clear
💧 45% 💨 26.6 km/h
11 PM
Clear
Clear
💧 82% 💨 24.8 km/h

3-Day Forecast

Daily overview for Saint Catharines-Niagara, Ontario

Today
Sunny
Sunny
15° /
🌧️ 0% chance of rain
💧 Avg. humidity: 61%
💨 Max wind: 29.5 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 5.7
🌅 Sunrise: 06:20 AM
🌇 Sunset: 08:10 PM
🌙 First Quarter
🌑 Moon: 49% lit
Sat, Apr 25
Moderate rain
Moderate rain
/
🌧️ 92% chance of rain
💧 Avg. humidity: 89%
💨 Max wind: 42.1 km/h
🌧️ Total precip: 18.09 mm
☀️ UV Index: 0.5
🌅 Sunrise: 06:18 AM
🌇 Sunset: 08:11 PM
🌙 Waxing Gibbous
🌑 Moon: 60% lit
Sun, Apr 26
Partly Cloudy
Partly Cloudy
10° /
🌧️ 0% chance of rain
💧 Avg. humidity: 85%
💨 Max wind: 16.9 km/h
🌧️ Total precip: 0.01 mm
☀️ UV Index: 5.5
🌅 Sunrise: 06:17 AM
🌇 Sunset: 08:12 PM
🌙 Waxing Gibbous
🌑 Moon: 70% lit

Best Time to Visit Saint Catharines-Niagara

Plan your trip to Saint Catharines-Niagara, 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.
← Back to Saint Catharines-Niagara 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Saint Catharines-Niagara?
Current conditions in Saint Catharines-Niagara: Clear, temperature 6°C, humidity 82%.
What is the best time to visit Saint Catharines-Niagara?
The best time to visit Saint Catharines-Niagara is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Saint Catharines-Niagara?
Saint Catharines-Niagara 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-Niagara?
The wettest period in Saint Catharines-Niagara is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Saint Catharines-Niagara?
For visits to Saint Catharines-Niagara during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Saint Catharines-Niagara in?
Saint Catharines-Niagara is located in Canada, in the state of Ontario.
What are the public holidays in Saint Catharines-Niagara in 2026?
View the 2026 public holidays for Saint Catharines-Niagara on our Holidays page.
What are the GPS coordinates used for the weather forecast in Saint Catharines-Niagara?
The weather forecast for Saint Catharines-Niagara uses coordinates 43.158, -79.2441.
What is the current temperature outside in Saint Catharines-Niagara?
The current outdoor temperature in Saint Catharines-Niagara is 6°C (43°F) with clear.
What is the hourly weather forecast for Saint Catharines-Niagara today?
Today's hour-by-hour weather breakdown for Saint Catharines-Niagara 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-Niagara tomorrow hour by hour?
Tomorrow's forecast for Saint Catharines-Niagara shows a high of 8°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-Niagara?
Rain is not expected in Saint Catharines-Niagara today. Current forecast shows no significant rain probability.
Is it going to rain today in Saint Catharines-Niagara?
No, rain is not forecast for Saint Catharines-Niagara today. Current conditions show clear to partly cloudy skies.