St. Catharines, ON Weather

    06:00 Friday
    Sunny
    Clear
    17° Feels like 17°
    Moderate northwest wind Northwest 17 - 31 km/h
    reloj Hourly Clear skies for the next few hours
    • Today 28 Aug. Clear 22° / 17° Moderate north wind 18 - 36 km/h
    • Tomorrow 29 Aug. Scattered clouds 25° / 15° Moderate southwest wind 18 - 37 km/h
    • Sunday 30 Aug. Light rain with partly cloudy skies 60% 0.7 mm 26° / 19° Moderate southwest wind 14 - 28 km/h
    • Monday 31 Aug. Light rain with partly cloudy skies 80% 2.2 mm 27° / 19° Moderate northeast wind 8 - 25 km/h
    • Tuesday 1 Sept. Light rain with partly cloudy skies 60% 0.2 mm 31° / 22° Moderate southwest wind 16 - 40 km/h
    • Wednesday 2 Sept. Light rain with partly cloudy skies 70% 0.8 mm 30° / 21° Moderate west wind 21 - 43 km/h
    • Thursday 3 Sept. Scattered clouds 26° / 20° Moderate north wind 14 - 32 km/h

    Weather Forecast for St. Catharines, ON Today

    , 28 August

    Today in St. Catharines we will see clear throughout the day. This morning temperatures will be around 18°C and in the afternoon around 21°C. During the night, temperatures will be close to 18°C. Winds from the North today with an average speed of 18 km/h.

    Tomorrow

    , 29 August
    07:00 Clear 17° Sunny
    Feels Like 17°
    Moderate northwest wind Northwest 17 - 31 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 79%
    • Dew Point Dew Point 14 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 17 °C
    • Visibility Visibility 30 km
    • Wind Wind - Average 17 km/h
    • Pressure Pressure 1018 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 31 km/h
    • Snowline Snowline 12795 ft
    08:00 Clear 17° Sunny
    Feels Like 17°
    Moderate north wind North 18 - 35 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 72%
    • Dew Point Dew Point 12 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 17 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 18 km/h
    • Pressure Pressure 1019 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 35 km/h
    • Snowline Snowline 12795 ft
    09:00 Clear 17° Sunny
    Feels Like 17°
    Moderate north wind North 16 - 35 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 70%
    • Dew Point Dew Point 12 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 17 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 16 km/h
    • Pressure Pressure 1020 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 35 km/h
    • Snowline Snowline 12795 ft
    10:00 Clear 18° Sunny
    Feels Like 18°
    Moderate north wind North 14 - 33 km/h
    		UV Index 2 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 70%
    • Dew Point Dew Point 12 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 18 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 14 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 33 km/h
    • Snowline Snowline 12795 ft
    Sunny 11:00 Clear 18° Sunny
    Feels Like 18°
    Moderate north wind North 11 - 30 km/h
    		UV Index 4 Moderate SPF: 6-10
    11:00 Clear 18° Sunny
    Feels Like 18°
    Moderate north wind North 11 - 30 km/h
    		UV Index 4 Moderate SPF: 6-10
    • Rain Rain 0% 0 mm
    • Humidity Humidity 66%
    • Dew Point Dew Point 12 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 18 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 11 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 30 km/h
    • Snowline Snowline 13123 ft
    12:00 Clear 19° Sunny
    Feels Like 19°
    Moderate north wind North 8 - 26 km/h
    		UV Index 5 Moderate SPF: 6-10
    • Rain Rain 0% 0 mm
    • Humidity Humidity 62%
    • Dew Point Dew Point 12 °C
    • Clouds Clouds 0%
    • Feels Like Feels Like 19 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 8 km/h
    • Pressure Pressure 1022 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 26 km/h
    • Snowline Snowline 13780 ft
    13:00 Clear 20° Sunny
    Feels Like 20°
    Moderate north wind North 7 - 22 km/h
    		UV Index 6 High SPF: 15-25
    • Rain Rain 0% 0 mm
    • Humidity Humidity 59%
    • Dew Point Dew Point 11 °C
    • Clouds Clouds 2%
    • Feels Like Feels Like 20 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 7 km/h
    • Pressure Pressure 1022 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 22 km/h
    • Snowline Snowline 13780 ft
    Sunny 14:00 Clear 20° Sunny
    Feels Like 20°
    Moderate north wind North 6 - 22 km/h
    		UV Index 6 High SPF: 15-25
    14:00 Clear 20° Sunny
    Feels Like 20°
    Moderate north wind North 6 - 22 km/h
    		UV Index 6 High SPF: 15-25
    • Rain Rain 0% 0 mm
    • Humidity Humidity 57%
    • Dew Point Dew Point 11 °C
    • Clouds Clouds 6%
    • Feels Like Feels Like 20 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 6 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 22 km/h
    • Snowline Snowline 13780 ft
    15:00 Clear 20° Sunny
    Feels Like 20°
    Moderate east wind East 3 - 21 km/h
    		UV Index 5 Moderate SPF: 6-10
    • Rain Rain 0% 0 mm
    • Humidity Humidity 54%
    • Dew Point Dew Point 11 °C
    • Clouds Clouds 2%
    • Feels Like Feels Like 20 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 3 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 21 km/h
    • Snowline Snowline 13780 ft
    16:00 Clear 21° Sunny
    Feels Like 21°
    Gentle north wind North 3 - 18 km/h
    		UV Index 3 Moderate SPF: 6-10
    • Rain Rain 0% 0 mm
    • Humidity Humidity 52%
    • Dew Point Dew Point 11 °C
    • Clouds Clouds 2%
    • Feels Like Feels Like 21 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 3 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 18 km/h
    • Snowline Snowline 13780 ft
    Sunny 17:00 Clear 21° Sunny
    Feels Like 21°
    Gentle northwest wind Northwest 3 - 16 km/h
    		UV Index 2 Low SPF: no
    17:00 Clear 21° Sunny
    Feels Like 21°
    Gentle northwest wind Northwest 3 - 16 km/h
    		UV Index 2 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 51%
    • Dew Point Dew Point 11 °C
    • Clouds Clouds 4%
    • Feels Like Feels Like 21 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 3 km/h
    • Pressure Pressure 1020 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 16 km/h
    • Snowline Snowline 13780 ft
    18:00 Clear 21° Sunny
    Feels Like 21°
    Gentle west wind West 0 - 13 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 52%
    • Dew Point Dew Point 11 °C
    • Clouds Clouds 2%
    • Feels Like Feels Like 21 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 0 km/h
    • Pressure Pressure 1020 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 13 km/h
    • Snowline Snowline 13780 ft
    19:00 Clear 21° Sunny
    Feels Like 21°
    Gentle south wind South 2 - 8 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 58%
    • Dew Point Dew Point 13 °C
    • Clouds Clouds 2%
    • Feels Like Feels Like 21 °C
    • Visibility Visibility 40 km
    • Wind Wind - Average 2 km/h
    • Pressure Pressure 1020 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 8 km/h
    • Snowline Snowline 13780 ft
    Sunny 20:00 Clear 20° Sunny
    Feels Like 20°
    Gentle south wind South 5 - 9 km/h
    		UV Index 0 Low SPF: no
    20:00 Clear 20° Sunny
    Feels Like 20°
    Gentle south wind South 5 - 9 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 68%
    • Dew Point Dew Point 14 °C
    • Clouds Clouds 3%
    • Feels Like Feels Like 20 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 5 km/h
    • Pressure Pressure 1020 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 9 km/h
    • Snowline Snowline 13780 ft
    21:00 Clear skies 19° Clear
    Feels Like 19°
    Gentle south wind South 8 - 15 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 73%
    • Dew Point Dew Point 14 °C
    • Clouds Clouds 8%
    • Feels Like Feels Like 19 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 8 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 15 km/h
    • Snowline Snowline 13451 ft
    22:00 Clear skies 18° Clear
    Feels Like 18°
    Gentle southwest wind Southwest 8 - 16 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 77%
    • Dew Point Dew Point 14 °C
    • Clouds Clouds 1%
    • Feels Like Feels Like 18 °C
    • Visibility Visibility 35 km
    • Wind Wind - Average 8 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 16 km/h
    • Snowline Snowline 13451 ft
    Clear 23:00 Clear skies 18° Clear
    Feels Like 18°
    Gentle southwest wind Southwest 8 - 15 km/h
    		UV Index 0 Low SPF: no
    23:00 Clear skies 18° Clear
    Feels Like 18°
    Gentle southwest wind Southwest 8 - 15 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 78%
    • Dew Point Dew Point 14 °C
    • Clouds Clouds 3%
    • Feels Like Feels Like 18 °C
    • Visibility Visibility 30 km
    • Wind Wind - Average 8 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 15 km/h
    • Snowline Snowline 13451 ft
    24:00 Clear skies 17° Clear
    Feels Like 17°
    Gentle southwest wind Southwest 8 - 15 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 80%
    • Dew Point Dew Point 14 °C
    • Clouds Clouds 1%
    • Feels Like Feels Like 17 °C
    • Visibility Visibility 30 km
    • Wind Wind - Average 8 km/h
    • Pressure Pressure 1021 hPa
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 15 km/h
    • Snowline Snowline 13123 ft

    Air quality in St. Catharines today

    Detail
    39
    Fair O₃ (97 µg/m³)

    Sunrise and Sunset

    Sunrise 06:37 Sunset 19:59
    First light 06:07 Midday 13:18 Last light 20:28
    Day length 13h 22m

    Time remaining until sunrise 1m

    Lunar calendar

    Mon Tue Wed Thu Fri Sat Sun
    28 Full Moon
    29 Full Moon
    30 Last Quarter
    31 Last Quarter
    1 Last Quarter
    2 Last Quarter
    3 Last Quarter
    4 Last Quarter
    5 Last Quarter
    6 Last Quarter
    7 Last Quarter
    8 Last Quarter
    9 New Moon
    10 New Moon

    What is the weather like in St. Catharines, ON in August?

    • Avg. Temp.
      Avg. Temp.: 22 °C Max.: 25 °C Min: 20 °C
    • Rainy Days
      Rainy Days: 10 days
    • Accumulated Rainfall
      Accumulated Rainfall: 81 mm
    • Average Wind Speed
      Average Wind Speed: 12 km/h

    Weather graphs

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