• Today

    May 19

    23°Lo 15°

    Variably cloudy and warmer

    Beneficial weather for colds
    • Avg
      Temp
      19°
    • Avg
      RealFeel
      17°
    • Hi
      RealFeel
      24°
  • Mon

    May 20

    25°Lo 15°

    Nice with clouds and sun

    Beneficial weather for colds
    • Avg
      Temp
      20°
    • Avg
      RealFeel
      23°
    • Hi
      RealFeel
      28°
    more
  • Tue

    May 21

    23°Lo 13°

    A couple of thunderstorms

    Beneficial weather for colds
    • Avg
      Temp
      18°
    • Avg
      RealFeel
      19°
    • Hi
      RealFeel
      23°
    more
  • Wed

    May 22

    24°Lo 14°

    Mostly cloudy with a t-storm

    Neutral weather for colds
    • Avg
      Temp
      19°
    • Avg
      RealFeel
      19°
    • Hi
      RealFeel
      24°
    more
  • Thu

    May 23

    21°Lo 11°

    A couple of thunderstorms

    Neutral weather for colds
    • Avg
      Temp
      16°
    • Avg
      RealFeel
      17°
    • Hi
      RealFeel
      21°
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
12pm
1pm 2pm 3pm 4pm 5pm 6pm 7pm
  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Forecast
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Partly Cloudy
Temp (°C) 16° 19° 20° 22° 23° 23° 23° 22°
RealFeel® 21° 23° 23° 24° 24° 23° 21° 20°
Humidity 68% 63% 64% 60% 58% 58% 61% 65%
   
  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Rain
 
7%
 
7%
 
7%
 
7%
 
7%
 
7%
 
7%
 
7%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  12pm 1pm 2pm 3pm 4pm 5pm 6pm 7pm
Wind (km/h) 6 NNE 6 N 6 N 8 NNW 8 N 10 NE 8 NE 8 NE
UV Index 6 6 5 4 4 2 1 0
Cloud Cover 69% 68% 68% 69% 69% 70% 70% 70%
Dew Point 10° 11° 13° 14° 14° 15° 15° 15°
Middle Grid line 25 C Middle Grid line 20 C Middle Grid line 15 C

Temperature History - May 19

more Historical Weather Data >
  Today Normal Record 5/19/2012
High 23° 19° N/A 24°
Low 15° N/A 11°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:49 AM with 14:49 of sunlight, then sets at 8:38 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:31 PM with 12:19 of moolight, then sets at 2:50 AM

Top Story

St. Catharines Weather Report

The Summer Outlook for Canada

May 18, 2013; 9:44 AM ET

The Accuweather.com summer forecast for Canada. more >