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No watches or warnings in effect for St. Catharines, ON.

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Updated: @ 07/09/2026 13:07 - next update at 13:08  
Summary / Temperature Wind Rain Outlook
Day time Day time
Currently: 29.1°C, Max: 29.3°C, Min: 13.8°C 29.1°C
Warmer 1.6°C than last hour.

Warm

Feels like: 32.0°C

24-hr difference
4.8°CWarmer 4.8°C than yesterday at this time.
  Today Yesterday
High: 29.3°C
12:43 		25.8°C
15:51
Low: 13.8°C
06:10 		10.9°C
05:58
Wind from W W
4.2
Gust:
 3.2 km/h
1 Bft - Light Air
Today: 14.8 km/h 11:09
Gust Month: 35.3 km/h July 1
Rain Today: 0 mm
Rain Rate (/hr): 0 mm
Rain Yesterday: 0 mm
Storm Rain: 0 mm
This Month: 2.4 mm
Season Total: 2.4 mm
1 rain day in July.
Tonight
Chance of showers (40%)
Chance of showers
Humidity & Barometer Almanac Moon
Humidity: 65 % Decreased 4.0% since last hour.
Dew Point: 21.9°C Increased 0.6°C since last hour.
Barometer: 1006.4 mb Falling 0.3 mb/hr
Baro Trend: Steady
Sunrise: 05:42
Sunset: 21:16
Moonrise: 01:07
Moonset: 16:12
Waning Crescent
Waning Crescent, Moon at 24 days in cycle
30%
Illuminated
UV Index Solar Radiation
   5.7     Medium 
High: 5.8 @ 12:42
1014 W/m2 (0 %)
High: 1079 @  12:13
 EC Weather Forecast  - Outlook: Today & Tonight
Today
A few showers
A few showers
Max: 30°C
 EC forecast: A mix of sun and cloud. A few showers beginning this afternoon. Risk of a thunderstorm late this afternoon. Local amount 5 to 10 mm. High 30. Humidex 38. UV index 9 or very high.
Davis VP+ forecast: Mostly cloudy and cooler, precipitation possible within 12 hours, possibly heavy at times, windy.
 
Tonight
Chance of showers (40%)
Chance of showers
Min: 20°C
 EC forecast: A few showers ending this evening then cloudy with 40 percent chance of showers. Risk of a thunderstorm this evening and overnight. Fog patches developing overnight. Local amount 5 to 10 mm. Low 20.