St. Thomas, ON Weather

    08:00 Sunday
    Partly cloudy
    Partly cloudy
    -8° Feels like -15°
    Moderate west wind West 21 - 39 km/h
    • Today 21 Dec. Scattered clouds 2° / -8° Strong northwest wind 30 - 60 km/h
    • Tomorrow 22 Dec. Snow with partly cloudy skies 80% 0.9 mm 2° / -7° Moderate southwest wind 18 - 35 km/h
    • Tuesday 23 Dec. Rain and snow with partly cloud skies 60% 0.5 mm 6° / 0° Moderate northwest wind 27 - 49 km/h
    • Wednesday 24 Dec. Partly cloudy 1° / -3° Moderate northwest wind 24 - 45 km/h
    • Thursday 25 Dec. Partly cloudy 4° / -2° Moderate east wind 17 - 30 km/h
    • Friday 26 Dec. Freezing rain with cloudy skies 80% 11 mm 1° / -2° Strong east wind 30 - 58 km/h
    • Saturday 27 Dec. Rain and snow with cloudy skies 60% 1.1 mm 4° / -1° Strong west wind 18 - 52 km/h

    Weather Forecast for St. Thomas, ON Today

    , 21 December

    Tomorrow

    , 22 December
    08:00 Partly cloudy -8° Partly cloudy
    Feels Like -15°
    Moderate west wind West 21 - 39 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 54%
    • Dew Point Dew Point -15 °C
    • Clouds Clouds 65%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -15 °C
    • Wind Wind - Average 21 km/h
    • Pressure Pressure 1024 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 39 km/h
    • Visibility Visibility 45 km
    09:00 Partly cloudy -7° Partly cloudy
    Feels Like -15°
    Moderate west wind West 26 - 48 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 52%
    • Dew Point Dew Point -15 °C
    • Clouds Clouds 90%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -15 °C
    • Wind Wind - Average 26 km/h
    • Pressure Pressure 1026 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 48 km/h
    • Visibility Visibility 40 km
    10:00 Partly cloudy -6° Partly cloudy
    Feels Like -14°
    Strong northwest wind Northwest 27 - 52 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 52%
    • Dew Point Dew Point -15 °C
    • Clouds Clouds 94%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -14 °C
    • Wind Wind - Average 27 km/h
    • Pressure Pressure 1027 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 52 km/h
    • Visibility Visibility 45 km
    11:00 Partly cloudy -6° Partly cloudy
    Feels Like -13°
    Strong northwest wind Northwest 25 - 51 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 51%
    • Dew Point Dew Point -14 °C
    • Clouds Clouds 90%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -13 °C
    • Wind Wind - Average 25 km/h
    • Pressure Pressure 1028 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 51 km/h
    • Visibility Visibility 45 km
    12:00 Partly cloudy -5° Partly cloudy
    Feels Like -12°
    Moderate northwest wind Northwest 24 - 48 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 50%
    • Dew Point Dew Point -14 °C
    • Clouds Clouds 91%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -12 °C
    • Wind Wind - Average 24 km/h
    • Pressure Pressure 1028 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 48 km/h
    • Visibility Visibility 45 km
    13:00 Partly cloudy -4° Partly cloudy
    Feels Like -11°
    Moderate northwest wind Northwest 24 - 47 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 47%
    • Dew Point Dew Point -14 °C
    • Clouds Clouds 81%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -11 °C
    • Wind Wind - Average 24 km/h
    • Pressure Pressure 1028 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 47 km/h
    • Visibility Visibility 50 km
    Scattered clouds 14:00 Scattered clouds -4° Scattered clouds
    Feels Like -10°
    Moderate northwest wind Northwest 22 - 46 km/h
    		UV Index 1 Low SPF: no
    14:00 Partly cloudy -4° Partly cloudy
    Feels Like -10°
    Moderate northwest wind Northwest 22 - 46 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 45%
    • Dew Point Dew Point -14 °C
    • Clouds Clouds 20%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -10 °C
    • Wind Wind - Average 22 km/h
    • Pressure Pressure 1029 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 46 km/h
    • Visibility Visibility 50 km
    15:00 Scattered clouds -4° Scattered clouds
    Feels Like -9°
    Moderate northwest wind Northwest 19 - 42 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 44%
    • Dew Point Dew Point -14 °C
    • Clouds Clouds 11%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -9 °C
    • Wind Wind - Average 19 km/h
    • Pressure Pressure 1030 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 42 km/h
    • Visibility Visibility 50 km
    16:00 Clear -4° Sunny
    Feels Like -9°
    Moderate northwest wind Northwest 16 - 37 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 46%
    • Dew Point Dew Point -14 °C
    • Clouds Clouds 4%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -9 °C
    • Wind Wind - Average 16 km/h
    • Pressure Pressure 1030 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 37 km/h
    • Visibility Visibility 50 km
    Sunny 17:00 Clear -5° Sunny
    Feels Like -9°
    Moderate northwest wind Northwest 10 - 29 km/h
    		UV Index 0 Low SPF: no
    17:00 Clear -5° Sunny
    Feels Like -9°
    Moderate northwest wind Northwest 10 - 29 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 51%
    • Dew Point Dew Point -14 °C
    • Clouds Clouds 0%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -9 °C
    • Wind Wind - Average 10 km/h
    • Pressure Pressure 1031 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 29 km/h
    • Visibility Visibility 50 km
    18:00 Clear skies -6° Clear
    Feels Like -9°
    Gentle west wind West 7 - 17 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 54%
    • Dew Point Dew Point -14 °C
    • Clouds Clouds 2%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -9 °C
    • Wind Wind - Average 7 km/h
    • Pressure Pressure 1032 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 17 km/h
    • Visibility Visibility 50 km
    19:00 Clear skies -7° Clear
    Feels Like -9°
    Gentle west wind West 6 - 12 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 55%
    • Dew Point Dew Point -14 °C
    • Clouds Clouds 6%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -9 °C
    • Wind Wind - Average 6 km/h
    • Pressure Pressure 1032 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 12 km/h
    • Visibility Visibility 50 km
    Clear 20:00 Clear skies -7° Clear
    Feels Like -9°
    Gentle west wind West 6 - 10 km/h
    		UV Index 0 Low SPF: no
    20:00 Clear skies -7° Clear
    Feels Like -9°
    Gentle west wind West 6 - 10 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 54%
    • Dew Point Dew Point -15 °C
    • Clouds Clouds 1%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -9 °C
    • Wind Wind - Average 6 km/h
    • Pressure Pressure 1033 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 10 km/h
    • Visibility Visibility 50 km
    21:00 Clear skies -7° Clear
    Feels Like -10°
    Gentle southwest wind Southwest 8 - 14 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 52%
    • Dew Point Dew Point -15 °C
    • Clouds Clouds 0%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -10 °C
    • Wind Wind - Average 8 km/h
    • Pressure Pressure 1033 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 14 km/h
    • Visibility Visibility 50 km
    22:00 Clear skies -7° Clear
    Feels Like -10°
    Gentle southwest wind Southwest 8 - 15 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 54%
    • Dew Point Dew Point -15 °C
    • Clouds Clouds 1%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -10 °C
    • Wind Wind - Average 8 km/h
    • Pressure Pressure 1033 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 15 km/h
    • Visibility Visibility 50 km
    Clear 23:00 Clear skies -7° Clear
    Feels Like -10°
    Gentle southwest wind Southwest 7 - 13 km/h
    		UV Index 0 Low SPF: no
    23:00 Clear skies -7° Clear
    Feels Like -10°
    Gentle southwest wind Southwest 7 - 13 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 56%
    • Dew Point Dew Point -14 °C
    • Clouds Clouds 1%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -10 °C
    • Wind Wind - Average 7 km/h
    • Pressure Pressure 1033 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 13 km/h
    • Visibility Visibility 50 km
    24:00 Clear skies -7° Clear
    Feels Like -10°
    Gentle southwest wind Southwest 7 - 12 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 59%
    • Dew Point Dew Point -14 °C
    • Clouds Clouds 0%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -10 °C
    • Wind Wind - Average 7 km/h
    • Pressure Pressure 1032 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 12 km/h
    • Visibility Visibility 50 km

    Sunrise and Sunset

    Sunrise 07:52 Sunset 16:53
    First light 07:19 Midday 12:23 Last light 17:26
    Day length 9h 2m

    Remaining daylight 8h 24m

    Lunar calendar

    Mon Tue Wed Thu Fri Sat Sun
    21 New Moon
    22 First Quarter
    23 First Quarter
    24 First Quarter
    25 First Quarter
    26 First Quarter
    27 First Quarter
    28 First Quarter
    29 First Quarter
    30 First Quarter
    31 First Quarter
    1 First Quarter
    2 Full Moon
    3 Full Moon

    Air quality in St. Thomas today

    Detail
    31
    Fair O₃ (76 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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