MSC Weather

Canada Weather Forecast

Data provided by Environment and Climate Change Canada

St. Catharines, Ontario

St. Catharines - Weather - Environment Canada

  • Current Conditions: 12.8°C
    on October 11, 2026 at 8:00 am

    Observed at: St. Catharines / Niagara District Airport 8:00 AM EDT Sunday 11 October 2026 Temperature: 12.8°C Pressure: 102.2 kPa Humidity: 80 % Dewpoint: 9.4°C Wind: ENE 11 km/h Air Quality Health Index: 2

  • Saturday: Cloudy. High 10.
    on October 11, 2026 at 5:00 am

    Cloudy. High 10. Forecast issued 5:00 AM EDT Sunday 11 October 2026

  • Friday night: Chance of showers. Low 7. POP 30%
    on October 11, 2026 at 5:00 am

    Cloudy with 30 percent chance of showers. Low 7. Forecast issued 5:00 AM EDT Sunday 11 October 2026

  • Friday: Chance of showers. High 13. POP 30%
    on October 11, 2026 at 5:00 am

    Cloudy with 30 percent chance of showers. High 13. Forecast issued 5:00 AM EDT Sunday 11 October 2026

  • Thursday night: Cloudy. Low 10.
    on October 11, 2026 at 5:00 am

    Cloudy. Low 10. Forecast issued 5:00 AM EDT Sunday 11 October 2026