St. Marys, ON Weather

    22:00 Thursday
    Scattered clouds
    Scattered clouds
    -13° Feels like -19°
    Full Moon Full Moon Illuminated: 100%
    • Today 4 Dec. Snow with partly cloudy skies 70% 0.5 mm -3° / -14° Strong northwest wind 30 - 51 km/h
    • Tomorrow 5 Dec. Partly cloudy -4° / -15° Moderate southwest wind 21 - 35 km/h
    • Saturday 6 Dec. Snow with cloudy skies 80% 1.9 mm -1° / -6° Moderate west wind 24 - 41 km/h
    • Sunday 7 Dec. Snow with partly cloudy skies 70% 1.3 mm -4° / -11° Moderate northwest wind 20 - 33 km/h
    • Monday 8 Dec. Scattered clouds -10° / -18° Moderate north wind 10 - 20 km/h
    • Tuesday 9 Dec. Snow with cloudy skies 90% 4.4 mm -1° / -14° Strong west wind 35 - 59 km/h
    • Wednesday 10 Dec. Snow with cloudy skies 80% 9.8 mm 1° / -4° Moderate southwest wind 24 - 40 km/h

    Weather Forecast for St. Marys, ON Today

    , 4 December

    Tomorrow

    , 5 December
    17:00 Overcast -10° Overcast
    Feels Like -12°
    Gentle north wind North 5 - 17 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 82%
    • Dew Point Dew Point -12 °C
    • Clouds Clouds 99%
    • Snow depth Snow depth 5.12 in
    • Feels Like Feels Like -12 °C
    • Wind Wind - Average 5 km/h
    • Pressure Pressure 1028 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 17 km/h
    • Visibility Visibility 20 km
    18:00 Overcast -10° Overcast
    Feels Like -11°
    Gentle northeast wind Northeast 4 - 8 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 83%
    • Dew Point Dew Point -12 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 5.12 in
    • Feels Like Feels Like -11 °C
    • Wind Wind - Average 4 km/h
    • Pressure Pressure 1028 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 8 km/h
    • Visibility Visibility 20 km
    19:00 Overcast -10° Overcast
    Feels Like -13°
    Gentle east wind East 5 - 9 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 84%
    • Dew Point Dew Point -12 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 5.12 in
    • Feels Like Feels Like -13 °C
    • Wind Wind - Average 5 km/h
    • Pressure Pressure 1028 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 9 km/h
    • Visibility Visibility 20 km
    20:00 Overcast -10° Overcast
    Feels Like -13°
    Gentle southeast wind Southeast 6 - 10 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 85%
    • Dew Point Dew Point -12 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 5.12 in
    • Feels Like Feels Like -13 °C
    • Wind Wind - Average 6 km/h
    • Pressure Pressure 1028 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 10 km/h
    • Visibility Visibility 25 km
    21:00 Overcast -11° Overcast
    Feels Like -14°
    Gentle southeast wind Southeast 6 - 10 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 85%
    • Dew Point Dew Point -13 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 5.12 in
    • Feels Like Feels Like -14 °C
    • Wind Wind - Average 6 km/h
    • Pressure Pressure 1028 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 10 km/h
    • Visibility Visibility 25 km
    22:00 Scattered clouds -11° Scattered clouds
    Feels Like -16°
    Gentle southeast wind Southeast 8 - 13 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 85%
    • Dew Point Dew Point -13 °C
    • Clouds Clouds 45%
    • Snow depth Snow depth 5.12 in
    • Feels Like Feels Like -16 °C
    • Wind Wind - Average 8 km/h
    • Pressure Pressure 1027 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 13 km/h
    • Visibility Visibility 30 km
    23:00 Scattered clouds -13° Scattered clouds
    Feels Like -19°
    Gentle south wind South 11 - 17 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 85%
    • Dew Point Dew Point -15 °C
    • Clouds Clouds 22%
    • Snow depth Snow depth 5.12 in
    • Feels Like Feels Like -19 °C
    • Wind Wind - Average 11 km/h
    • Pressure Pressure 1027 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 17 km/h
    • Visibility Visibility 30 km
    24:00 Scattered clouds -14° Scattered clouds
    Feels Like -20°
    Gentle south wind South 12 - 19 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 83%
    • Dew Point Dew Point -16 °C
    • Clouds Clouds 25%
    • Snow depth Snow depth 5.12 in
    • Feels Like Feels Like -20 °C
    • Wind Wind - Average 12 km/h
    • Pressure Pressure 1027 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 19 km/h
    • Visibility Visibility 30 km

    Sunrise and Sunset

    Sunrise 07:40 Sunset 16:49
    First light 07:08 Midday 12:14 Last light 17:21
    Day length 9h 9m

    Lunar calendar

    Mon Tue Wed Thu Fri Sat Sun
    4 Full Moon
    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

    Air quality in St. Marys today

    Detail
    32
    Fair O₃ (78 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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