• Today

    Aug 22

    21°Lo 17°

    A thunderstorm in spots

    Moderate ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
  • Sat

    Aug 23

    24°Lo 16°

    Partly sunny and humid

    Moderate ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
    more
  • Sun

    Aug 24

    26°Lo 16°

    Comfortable with some sun

    Moderate ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
    more
  • Mon

    Aug 25

    27°Lo 18°

    Partly sunny, nice and warm

    Moderate ragweed pollen levels
    • Precip
      4%
    • Wind
      Speed
      8 k/h
    • Cloud
      Cover
      40%
    more
  • Tue

    Aug 26

    28°Lo 17°

    Partly sunny and humid

    Ragweed Pollen Weather
    • Precip
      11%
    • Wind
      Speed
      11 k/h
    • Cloud
      Cover
      39%
    more
Next Previous
Hi 21° RealFeel® 23° Precipitation 50%

Day

N

E

S

W

  • N 10 km/h
  • Gusts: 13 km/h

Cloudy this morning, then clouds and sun this afternoon with a shower or thunderstorm in spots

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 40%
  • Precipitation: 1 mm
  • Rain: 1 mm
  • Snow: 0 CM
  • Ice: 0 mm
  • Hours of Precipitation: 0.5 hrs
  • Hours of Rain: 0.5 hrs
Lo 17° RealFeel® 16° Precipitation 15%

Night

N

E

S

W

  • NE 8 km/h
  • Gusts: 13 km/h

Partly cloudy

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

Temperature History - Aug 22

more Historical Weather Data >
  Today Normal Record 8/22/2013
High 21° 25° N/A 27°
Low 17° 15° N/A 20°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:30 AM with 13:39 of sunlight, then sets at 8:09 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:50 AM with 14:27 of moolight, then sets at 6:17 PM

Top Story

St. Catharines Weather Report

Updated Weekly Long-Range Model Forecast

August 22, 2014; 2:57 PM ET

My latest interpretation of the weekly long-range forecast model. more >