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  • Tonight

    Jul 30

    Clear, breezy and not as warm Lo 18°
  • Fri

    Jul 31

    Partly sunny and breezy 29°Lo 17°
    more
  • Sat

    Aug 1

    Partly sunny with a t-storm 27°Lo 16°
    more
  • Sun

    Aug 2

    Some sun with a thunderstorm 27°Lo 19°
    more
  • Mon

    Aug 3

    A thunderstorm possible 28°Lo 16°
    more
< Previous 8 hours Next 8 hours >
  Thu
5am
6am 7am 8am 9am 10am 11am 12pm
  5am 6am 7am 8am 9am 10am 11am 12pm
Forecast
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Sunny
Partly Sunny
Mostly Sunny
Partly Sunny
Partly Sunny
Temp (°C) 24° 24° 24° 23° 24° 26° 26° 27°
RealFeel® 23° 23° 22° 25° 26° 27° 29° 31°
Humidity 73% 73% 68% 62% 64% 60% 60% 54%
   
  5am 6am 7am 8am 9am 10am 11am 12pm
Rain
 
11%
 
11%
 
7%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
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0%
   
  5am 6am 7am 8am 9am 10am 11am 12pm
Wind (km/h) 26 W 28 W 26 W 2 WSW 11 E 15 W 11 W 11 W
UV Index 0 0 0 1 3 4 6 6
Cloud Cover 88% 84% 78% 31% 33% 25% 40% 41%
Dew Point 19° 19° 18° 16° 17° 17° 17° 17°
Middle Grid line 30 C Middle Grid line 25 C Middle Grid line 20 C

Temperature History - Jul 30

more Historical Weather Data >
  Today Normal Record 7/30/2014
High 30° 27° N/A 22°
Low 18° 16° N/A 17°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:05 AM with 14:36 of sunlight, then sets at 8:41 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:55 PM with 10:27 of moolight, then sets at 6:22 AM

St. Catharines Weather Report

Weekly Clues through the End of August

July 30, 2015; 9:54 PM ET

Some forecast model clues through the end of August and an update on global sea surface temperatures. more >