St. Catharines, Ontario

2026-05-17 12:07

6°C

Feels like -1°C

Partly cloudy

Humidity

65%

Wind

15 km/h NW

Visibility

10 km

Pressure

1013 mb

UV Index

3 — Moderate

Precip

0 mm

Hourly Forecast

Now

12°C35%

2:00 p.m.

-1°C

3:00 p.m.

8°C58%

4:00 p.m.

-2°C43%

5:00 p.m.

2°C33%

6:00 p.m.

5°C34%

7:00 p.m.

12°C36%

8:00 p.m.

11°C27%

9:00 p.m.

5°C59%

10:00 p.m.

3°C50%

11:00 p.m.

7°C

View full hourly forecast →

3-Day Forecast

Today

42%

18°C

4°C

Tomorrow

10°C

0°C

Tuesday

67%

17°C

0°C

St. Catharines Weather Tomorrow

Plan your day with the latest St. Catharines, Ontario weather forecast. Current conditions show partly cloudy with a temperature of 6°C (feels like -1°C). Humidity is at 65% with winds from the NW at 15 km/h.

This page is updated every 30 minutes with the latest weather data for St. Catharines. Check the hourly forecast above for a detailed breakdown of today's weather, or view the multi-day forecast to plan ahead.