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  • Today

    May 21

    A couple of p.m. t-storms 26°Lo 16°
    more

  • Wed

    May 22

    Strong t-storms, mainly later 23°Lo 16°
    more

  • Thu

    May 23

    A couple of thunderstorms 20°Lo 7°
    more

  • Fri

    May 24

    Cooler with clouds and sun 14°Lo 6°

  • Sat

    May 25

    Mostly sunny and warmer 18°Lo 6°
    more

Thunderstorms, some strong, this evening through Thursday afternoon Details >

< Previous 8 hours Next 8 hours >
  Fri
9am		 10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Temp (°C) 8° 9° 10° 11° 12° 14° 14° 13°
RealFeel® 4° 6° 9° 11° 13° 14° 13° 12°
Humidity 65% 59% 54% 50% 47% 45% 44% 45%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (km/h) 23 N 21 N 21 N 19 N 18 N 18 N 21 N 19 NNW
UV Index 2 4 5 6 6 6 5 4
Cloud Cover 46% 46% 46% 46% 46% 46% 46% 46%
Dew Point 2° 2° 1° 1° 1° 2° 2° 2°
Middle Grid line 15 C Middle Grid line 10 C Middle Grid line 5 C

Temperature History - May 24

more Historical Weather Data >
  Today Normal Record 5/24/2012
High 14° 20° N/A 24°
Low 6° 9° N/A 15°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:45 AM with 14:58 of sunlight, then sets at 8:43 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:22 PM with 9:48 of moolight, then sets at 6:10 AM

Top Story

St. Catharines Weather Report

The Summer Outlook for Canada

May 20, 2013; 2:44 PM ET

The Accuweather.com summer forecast for Canada. more >