St. Catharines, ON Weather

    00:00 Friday
    Clear
    Clear skies
    -10° Feels like -15°
    Full Moon Full Moon Illuminated: 99%
    • Today 5 Dec. Partly cloudy 0° / -11° Moderate southwest wind 22 - 40 km/h
    • Tomorrow 6 Dec. Snow with cloudy skies 30% 0.1 mm 2° / -2° Moderate west wind 25 - 46 km/h
    • Sunday 7 Dec. Snow with partly cloudy skies 80% 1.9 mm -1° / -5° Moderate northwest wind 19 - 36 km/h
    • Monday 8 Dec. Partly cloudy -4° / -10° Moderate north wind 17 - 32 km/h
    • Tuesday 9 Dec. Snow with cloudy skies 90% 2.5 mm 1° / -8° Strong south wind 31 - 60 km/h
    • Wednesday 10 Dec. Snow with cloudy skies 80% 7.8 mm 3° / -2° Moderate west wind 25 - 48 km/h
    • Thursday 11 Dec. Snow with cloudy skies 70% 3.6 mm 2° / -5° Moderate northeast wind 24 - 41 km/h

    Weather Forecast for St. Catharines, ON Today

    , 5 December

    Tomorrow

    , 6 December
    01:00 Clear skies -10° Clear
    Feels Like -15°
    Gentle south wind South 10 - 19 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 76%
    • Dew Point Dew Point -13 °C
    • Clouds Clouds 1%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -15 °C
    • Wind Wind - Average 10 km/h
    • Pressure Pressure 1026 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 19 km/h
    • Visibility Visibility 45 km
    02:00 Clear skies -10° Clear
    Feels Like -14°
    Moderate south wind South 9 - 20 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 75%
    • Dew Point Dew Point -14 °C
    • Clouds Clouds 7%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -14 °C
    • Wind Wind - Average 9 km/h
    • Pressure Pressure 1026 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 20 km/h
    • Visibility Visibility 45 km
    03:00 Partly cloudy -10° Partly cloudy
    Feels Like -14°
    Gentle south wind South 8 - 17 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 78%
    • Dew Point Dew Point -13 °C
    • Clouds Clouds 68%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -14 °C
    • Wind Wind - Average 8 km/h
    • Pressure Pressure 1025 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 17 km/h
    • Visibility Visibility 30 km
    04:00 Partly cloudy -9° Partly cloudy
    Feels Like -14°
    Gentle southeast wind Southeast 10 - 19 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 80%
    • Dew Point Dew Point -12 °C
    • Clouds Clouds 90%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -14 °C
    • Wind Wind - Average 10 km/h
    • Pressure Pressure 1024 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 19 km/h
    • Visibility Visibility 25 km
    Overcast 05:00 Overcast -8° Overcast
    Feels Like -13°
    Moderate southeast wind Southeast 11 - 21 km/h
    		UV Index 0 Low SPF: no
    05:00 Overcast -8° Overcast
    Feels Like -13°
    Moderate southeast wind Southeast 11 - 21 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 81%
    • Dew Point Dew Point -11 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -13 °C
    • Wind Wind - Average 11 km/h
    • Pressure Pressure 1023 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 21 km/h
    • Visibility Visibility 25 km
    06:00 Overcast -7° Overcast
    Feels Like -12°
    Moderate southeast wind Southeast 11 - 21 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 82%
    • Dew Point Dew Point -10 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -12 °C
    • Wind Wind - Average 11 km/h
    • Pressure Pressure 1022 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 21 km/h
    • Visibility Visibility 25 km
    07:00 Overcast -6° Overcast
    Feels Like -11°
    Moderate southeast wind Southeast 13 - 24 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 81%
    • Dew Point Dew Point -9 °C
    • Clouds Clouds 99%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -11 °C
    • Wind Wind - Average 13 km/h
    • Pressure Pressure 1022 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 24 km/h
    • Visibility Visibility 25 km
    Overcast 08:00 Overcast -6° Overcast
    Feels Like -11°
    Moderate south wind South 16 - 29 km/h
    		UV Index 0 Low SPF: no
    08:00 Overcast -6° Overcast
    Feels Like -11°
    Moderate south wind South 16 - 29 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 78%
    • Dew Point Dew Point -9 °C
    • Clouds Clouds 97%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -11 °C
    • Wind Wind - Average 16 km/h
    • Pressure Pressure 1021 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 29 km/h
    • Visibility Visibility 35 km
    09:00 Partly cloudy -5° Partly cloudy
    Feels Like -10°
    Moderate south wind South 16 - 32 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 75%
    • Dew Point Dew Point -9 °C
    • Clouds Clouds 90%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -10 °C
    • Wind Wind - Average 16 km/h
    • Pressure Pressure 1020 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 32 km/h
    • Visibility Visibility 40 km
    10:00 Overcast -4° Overcast
    Feels Like -9°
    Moderate southwest wind Southwest 19 - 35 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 70%
    • Dew Point Dew Point -8 °C
    • Clouds Clouds 97%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -9 °C
    • Wind Wind - Average 19 km/h
    • Pressure Pressure 1020 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 35 km/h
    • Visibility Visibility 40 km
    Partly cloudy 11:00 Partly cloudy -3° Partly cloudy
    Feels Like -8°
    Moderate southwest wind Southwest 19 - 36 km/h
    		UV Index 1 Low SPF: no
    11:00 Overcast -3° Overcast
    Feels Like -8°
    Moderate southwest wind Southwest 19 - 36 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 70%
    • Dew Point Dew Point -8 °C
    • Clouds Clouds 93%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -8 °C
    • Wind Wind - Average 19 km/h
    • Pressure Pressure 1019 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 36 km/h
    • Visibility Visibility 45 km
    12:00 Partly cloudy -2° Partly cloudy
    Feels Like -8°
    Moderate southwest wind Southwest 19 - 37 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 68%
    • Dew Point Dew Point -7 °C
    • Clouds Clouds 83%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -8 °C
    • Wind Wind - Average 19 km/h
    • Pressure Pressure 1017 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 37 km/h
    • Visibility Visibility 45 km
    13:00 Partly cloudy -2° Partly cloudy
    Feels Like -7°
    Moderate southwest wind Southwest 19 - 37 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 67%
    • Dew Point Dew Point -7 °C
    • Clouds Clouds 81%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -7 °C
    • Wind Wind - Average 19 km/h
    • Pressure Pressure 1016 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 37 km/h
    • Visibility Visibility 45 km
    Partly cloudy 14:00 Partly cloudy -2° Partly cloudy
    Feels Like -7°
    Moderate southwest wind Southwest 18 - 36 km/h
    		UV Index 1 Low SPF: no
    14:00 Partly cloudy -2° Partly cloudy
    Feels Like -7°
    Moderate southwest wind Southwest 18 - 36 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 67%
    • Dew Point Dew Point -7 °C
    • Clouds Clouds 69%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -7 °C
    • Wind Wind - Average 18 km/h
    • Pressure Pressure 1015 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 36 km/h
    • Visibility Visibility 45 km
    15:00 Partly cloudy -2° Partly cloudy
    Feels Like -7°
    Moderate southwest wind Southwest 18 - 36 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 67%
    • Dew Point Dew Point -7 °C
    • Clouds Clouds 71%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -7 °C
    • Wind Wind - Average 18 km/h
    • Pressure Pressure 1015 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 36 km/h
    • Visibility Visibility 45 km
    16:00 Partly cloudy -2° Partly cloudy
    Feels Like -7°
    Moderate southwest wind Southwest 15 - 35 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 71%
    • Dew Point Dew Point -7 °C
    • Clouds Clouds 83%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -7 °C
    • Wind Wind - Average 15 km/h
    • Pressure Pressure 1014 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 35 km/h
    • Visibility Visibility 45 km
    Partly cloudy 17:00 Partly cloudy -2° Partly cloudy
    Feels Like -6°
    Moderate southwest wind Southwest 13 - 27 km/h
    		UV Index 0 Low SPF: no
    17:00 Overcast -2° Overcast
    Feels Like -6°
    Moderate southwest wind Southwest 13 - 27 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 75%
    • Dew Point Dew Point -6 °C
    • Clouds Clouds 95%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -6 °C
    • Wind Wind - Average 13 km/h
    • Pressure Pressure 1014 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 27 km/h
    • Visibility Visibility 40 km
    18:00 Overcast -2° Overcast
    Feels Like -5°
    Moderate southwest wind Southwest 12 - 24 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 77%
    • Dew Point Dew Point -5 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -5 °C
    • Wind Wind - Average 12 km/h
    • Pressure Pressure 1014 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 24 km/h
    • Visibility Visibility 40 km
    19:00 Partly cloudy -1° Partly cloudy
    Feels Like -5°
    Moderate southwest wind Southwest 12 - 22 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 79%
    • Dew Point Dew Point -4 °C
    • Clouds Clouds 88%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -5 °C
    • Wind Wind - Average 12 km/h
    • Pressure Pressure 1013 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 22 km/h
    • Visibility Visibility 40 km
    Partly cloudy 20:00 Partly cloudy -1° Partly cloudy
    Feels Like -5°
    Moderate southwest wind Southwest 12 - 22 km/h
    		UV Index 0 Low SPF: no
    20:00 Overcast -1° Overcast
    Feels Like -5°
    Moderate southwest wind Southwest 12 - 22 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 79%
    • Dew Point Dew Point -4 °C
    • Clouds Clouds 88%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -5 °C
    • Wind Wind - Average 12 km/h
    • Pressure Pressure 1013 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 22 km/h
    • Visibility Visibility 40 km
    21:00 Overcast -1° Overcast
    Feels Like -5°
    Moderate southwest wind Southwest 15 - 27 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 79%
    • Dew Point Dew Point -4 °C
    • Clouds Clouds 99%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -5 °C
    • Wind Wind - Average 15 km/h
    • Pressure Pressure 1012 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 27 km/h
    • Visibility Visibility 35 km
    22:00 Overcast 0° Overcast
    Feels Like -5°
    Moderate southwest wind Southwest 17 - 31 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 80%
    • Dew Point Dew Point -4 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -5 °C
    • Wind Wind - Average 17 km/h
    • Pressure Pressure 1012 hPa
    • Snowline Snowline 328 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 31 km/h
    • Visibility Visibility 30 km
    Overcast 23:00 Overcast 0° Overcast
    Feels Like -5°
    Moderate southwest wind Southwest 19 - 35 km/h
    		UV Index 0 Low SPF: no
    23:00 Overcast 0° Overcast
    Feels Like -5°
    Moderate southwest wind Southwest 19 - 35 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 79%
    • Dew Point Dew Point -4 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -5 °C
    • Wind Wind - Average 19 km/h
    • Pressure Pressure 1011 hPa
    • Snowline Snowline 328 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 35 km/h
    • Visibility Visibility 40 km
    24:00 Overcast 0° Overcast
    Feels Like -6°
    Moderate southwest wind Southwest 22 - 40 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 80%
    • Dew Point Dew Point -3 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 1.18 in
    • Feels Like Feels Like -6 °C
    • Wind Wind - Average 22 km/h
    • Pressure Pressure 1010 hPa
    • Snowline Snowline 328 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 40 km/h
    • Visibility Visibility 40 km

    Sunrise and Sunset

    Sunrise 07:33 Sunset 16:41
    First light 07:01 Midday 12:07 Last light 17:13
    Day length 9h 8m

    Time remaining until sunrise 6h 48m

    Lunar calendar

    Mon Tue Wed Thu Fri Sat Sun
    5 Full Moon
    6 Last Quarter
    7 Last Quarter
    8 Last Quarter
    9 Last Quarter
    10 Last Quarter
    11 Last Quarter
    12 Last Quarter
    13 Last Quarter
    14 Last Quarter
    15 Last Quarter
    16 Last Quarter
    17 Last Quarter
    18 New Moon

    Air quality in St. Catharines today

    Detail
    34
    Fair O₃ (84 µg/m³)
    • Little health risk.
    • Sensitive people should consider reducing prolonged or intense outdoor activities if they experience symptoms.

    Weather graphs
    Maximum Minimum Rainfall

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