• Today

    Jul 23

    23°Lo 15°

    Rather cloudy and not as warm

    Beneficial weather for sinus headaches
    • Hi
      RealFeel
      22°
    • UV
      4 - Moderate
    • Cloud
      Cover
      82%
  • Thu

    Jul 24

    23°Lo 13°

    Nice with clouds and sun

    Beneficial weather for sinus headaches
    • Hi
      RealFeel
      24°
    • UV
      7 - High
    • Cloud
      Cover
      46%
    more
  • Fri

    Jul 25

    25°Lo 15°

    Sunshine and nice

    Beneficial weather for sinus headaches
    • Hi
      RealFeel
      26°
    • UV
      7 - High
    • Cloud
      Cover
      25%
    more
  • Sat

    Jul 26

    26°Lo 17°

    Sun mixing with clouds; nice

    Beneficial weather for sinus headaches
    • Hi
      RealFeel
      27°
    • UV
      7 - High
    • Cloud
      Cover
      40%
    more
  • Sun

    Jul 27

    26°Lo 17°

    Some sun, a t-storm possible

    Beneficial weather for sinus headaches
    • Hi
      RealFeel
      26°
    • UV
      6 - High
    • Cloud
      Cover
      69%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
11am
12pm 1pm 2pm 3pm 4pm 5pm 6pm
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Forecast
Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Temp (°C) 21° 21° 22° 22° 23° 23° 23° 23°
RealFeel® 20° 20° 21° 21° 21° 22° 21° 20°
Humidity 78% 72% 72% 68% 66% 63% 64% 63%
   
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Rain
 
28%
 
28%
 
19%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Wind (km/h) 26 NW 26 NW 26 NW 26 NW 24 NW 26 NW 24 NNW 22 NNW
UV Index 3 3 4 4 4 4 2 1
Cloud Cover 91% 86% 82% 78% 74% 70% 70% 70%
Dew Point 17° 16° 17° 16° 16° 16° 16° 15°
Middle Grid line 25 C Middle Grid line 20 C

Temperature History - Jul 23

more Historical Weather Data >
  Today Normal Record 7/23/2013
High 23° 27° N/A 27°
Low 15° 16° N/A 17°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:58 AM with 14:50 of sunlight, then sets at 8:48 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:17 AM with 14:57 of moolight, then sets at 6:14 PM

Top Story

St. Catharines Weather Report

Alberta, Saskatchewan at Risk for Tornadoes Thursday

July 23, 2014; 8:05 AM ET

A potent storm system moving out of the Northwest United States will bring an elevated risk of tornadoes to parts of Alberta and Saskatchewan on Thursday. more >