St. Catharines

Regional Municipality of Niagara, Ontario, Canada

Current Weather

23°

Clear

Feels Like:

Min:

Max: 25°

The next few hours will be clear, with today reaching 24°C and dropping to 12°C. The coming days will be hazy until evening and dry starting in the afternoon.

Does this forecast seem accurate?

Unlock Historical Data

Compare today's weather with yesterday's data and track temperature trends over time.

Upgrade Now

Hourly Forecast

10° 13° 15° 17° 18° 20° 21° 23° 24° 24° 25° 24° 23° 20° 18° 16° 15° 14° 13° 12° 12° 11° 11° 13° 15° 18° 20° 22° 25° 26° 27° 28° 29° 29° 29° 28° 26° 24° 22° 20°
2am
3am
4am
5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
2am
3am
4am
5am
6am
7am
8am
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
5pm
6pm
7pm
8pm
9pm
10pm
11pm
12am
1am
Today
Tomorrow
Saturday

Daylight Hours

05:42

Sunrise

20:50

Sunset

15 hours 8 minutes of sunlight today

Daily Forecast

Today

25°

Friday

11°
29°

Saturday

11°
26°

Sunday

11°
28°

Monday

12°
30°

Tuesday

14°
33°

Wednesday

16°
32°

Air Quality Data Available

Upgrade to access real-time air quality data for St. Catharines.

Upgrade Now

UV Index

No protection needed
0 Low
Low Extreme

Humidity

34% Dry
Low High
Powered by Airpult

Frequently asked questions about weather in St. Catharines

How warm does it get in St. Catharines?

The warmest month in St. Catharines is July, with average high temperatures of 25°C. The average temperature during this period is around 22°C.

How cold does it get in St. Catharines?

The coldest month in St. Catharines is February, with average low temperatures of -4°C. The average temperature during this period is around -2°C.

What is the wettest time of year in St. Catharines?

The wettest month in St. Catharines is April, with an average of 108mm of precipitation.

What is the driest time of year in St. Catharines?

The driest month in St. Catharines is September, with an average of 68mm of precipitation.

View full climate insights for St. Catharines →

Airpult

Get accurate weather forecasts worldwide with real-time updates and severe weather alerts. Covering 6M+ locations with precise, reliable weather data.

© 2026 Samuenti GmbH. All rights reserved.

gb English
Metric (°C, km/h)

Confirm