Weather in St. Catharines

Current conditions, today's hourly forecast, and a 3-day outlook for St. Catharines, Canada (America/Toronto). Data from WeatherAPI.com.

18°
Partly Cloudy
Feels like 11° · Updated local
High / Low
18° / 26°
Wind
20 km/h N
Humidity
78%
Rain today
9%
UV
0

Active alerts

  • Small Craft Advisory Minor

    Small Craft Advisory issued July 28 at 4:00PM EDT until July 29 at 2:00PM EDT by NWS Buffalo NY

    Areas: Niagara River to Hamlin Beach NY

    * WHAT...Northwest winds 15 to 20 knots and waves 3 to 5 feet expected. * WHERE...The nearshore waters of Lake Ontario from the Niagara River to Hamlin Beach. * WHEN...From 8 PM this evening to 2 PM EDT Wednesday. * IMPACTS...Winds and/or waves will cause hazardous conditions that could capsize or damage small craft.

Today, hour by hour

  • 07:00 Sunny 19° 8%
  • 08:00 Sunny 19° 7%
  • 09:00 Sunny 20° 7%
  • 10:00 Sunny 21° 7%
  • 11:00 Sunny 24° 6%
  • 12:00 Sunny 25° 5%
  • 13:00 Sunny 25° 4%
  • 14:00 Sunny 25° 4%

3-day outlook

  • Wed 29 Jul Sunny Sunny Rain 9% 18° / 26°
  • Thu 30 Jul Partly Cloudy Partly Cloudy Rain 10% 19° / 24°
  • Fri 31 Jul Sunny Sunny Rain 7% 19° / 26°