Observed at: St. Catharines Airport
Date: 12:00 PM EDT Wednesday 16 May 2012
Cloudy
Cloudy
Temperature: 11.5°C
Wind: WNW 25 gust 36 km/h
Humidity: 82 %
Dewpoint: 8.5°C
Pressure: 101.3 kPa
Tendency: rising
Visibility: 10 km
Normals
  Max: 20°C
  Min: 8°C

Today
  Sunrise: 5:52
  Sunset: 20:35
 Extended Forecast - Environment Canada
Today
A few showers
Max: 19°C
 
A few showers
Thu
Sunny
Max: 17°C
Min: 6°C
Sunny
Fri
Sunny
Max: 21°C
Min: 9°C
Sunny
Sat
Sunny
Max: 25°C
Min: 12°C
Sunny
Sun
Sunny
Max: 29°C
Min: 16°C
Sunny
Mon
Sunny
Max: 23°C
Min: 15°C
Sunny
Tue
A mix of sun and cloud
Max: 21°C
Min: 15°C
A mix of sun and cloud

Detailed Forecast...

St. Catharines (Issued : 11:00 AM EDT Wednesday 16 May 2012)
Today
A few showers ending near noon then cloudy. Risk of a thunderstorm near noon. Wind becoming northwest 20 km/h this afternoon. High 19. UV index 4 or moderate.
Tonight
Clearing early this evening. Wind northwest 20 km/h becoming light late this evening. Low 6.
Thursday
Sunny. High 17.
Friday
Sunny. Low 9. High 21.
Saturday
Sunny. Low 12. High 25.
Sunday
Sunny. Low 16. High 29.
Monday
Sunny. Low 15. High 23.
Tuesday
A mix of sun and cloud. Low 15. High 21.

Environment Canada