1 - 5 of 30 days | All 30 days
Next 5 Days

  • Today

    May 18

    Warmer with variable clouds 18°Lo 12°
    more

  • Sun

    May 19

    Variable cloudiness 23°Lo 13°

  • Mon

    May 20

    Partly sunny and nice 26°Lo 16°
    more

  • Tue

    May 21

    Thunderstorms possible 26°Lo 13°
    more

  • Wed

    May 22

    Mostly cloudy with a t-storm 22°Lo 14°
    more

A thunderstorm Monday night Details >

Hi 23° RealFeel® 24° Precipitation 23%

Day

N

E

S

W

  • NNE 10 km/h
  • Gusts: 14 km/h

Variable cloudiness

  • Max UV Index: 6 (High)
  • Thunderstorms: 1%
  • Precipitation: 0 mm
  • Rain: 0 mm
  • Snow: 0 CM
  • Ice: 0 mm
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 13° RealFeel® 11° Precipitation 13%

Night

N

E

S

W

  • S 10 km/h
  • Gusts: 16 km/h

Partly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 3%
  • Precipitation: 0 mm
  • Rain: 0 mm
  • Snow: 0 CM
  • Ice: 0 mm
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - May 19

more Historical Weather Data >
  Today Normal Record 5/19/2012
High 23° 19° N/A 24°
Low 13° 8° 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 >