St. Thomas, ON Weather

    00:00 Monday
    Clear
    Clear skies
    -6° Feels like -9°
    First Quarter First Quarter Illuminated: 6%
    • Today 22 Dec. Snow with partly cloudy skies 90% 1.5 mm 2° / -7° Moderate south wind 18 - 35 km/h
    • Tomorrow 23 Dec. Rain and snow with partly cloud skies 70% 1 mm 7° / 0° Moderate northwest wind 25 - 44 km/h
    • Wednesday 24 Dec. Partly cloudy 2° / -2° Moderate northwest wind 22 - 40 km/h
    • Thursday 25 Dec. Partly cloudy 5° / -2° Moderate east wind 21 - 36 km/h
    • Friday 26 Dec. Rain and snow with partly cloud skies 90% 7 mm 9° / -2° Strong east wind 27 - 54 km/h
    • Saturday 27 Dec. Partly cloudy 7° / 1° Moderate west wind 19 - 37 km/h
    • Sunday 28 Dec. Snow with partly cloudy skies 70% 16 mm 11° / -2° Strong west wind 34 - 62 km/h

    Weather Forecast for St. Thomas, ON Today

    , 22 December

    Tomorrow

    , 23 December
    01:00 Clear skies -6° Clear
    Feels Like -9°
    Gentle southwest wind Southwest 8 - 13 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 66%
    • Dew Point Dew Point -12 °C
    • Clouds Clouds 0%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -9 °C
    • Wind Wind - Average 8 km/h
    • Pressure Pressure 1033 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 13 km/h
    • Visibility Visibility 50 km
    02:00 Clear skies -6° Clear
    Feels Like -10°
    Gentle southwest wind Southwest 9 - 17 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 66%
    • Dew Point Dew Point -11 °C
    • Clouds Clouds 0%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -10 °C
    • Wind Wind - Average 9 km/h
    • Pressure Pressure 1033 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 17 km/h
    • Visibility Visibility 50 km
    03:00 Scattered clouds -6° Scattered clouds
    Feels Like -9°
    Gentle southwest wind Southwest 9 - 16 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 68%
    • Dew Point Dew Point -11 °C
    • Clouds Clouds 38%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -9 °C
    • Wind Wind - Average 9 km/h
    • Pressure Pressure 1033 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 16 km/h
    • Visibility Visibility 50 km
    04:00 Scattered clouds -5° Scattered clouds
    Feels Like -9°
    Gentle southwest wind Southwest 9 - 17 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 71%
    • Dew Point Dew Point -10 °C
    • Clouds Clouds 43%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -9 °C
    • Wind Wind - Average 9 km/h
    • Pressure Pressure 1032 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 17 km/h
    • Visibility Visibility 45 km
    Scattered clouds 05:00 Scattered clouds -5° Scattered clouds
    Feels Like -9°
    Gentle southwest wind Southwest 10 - 16 km/h
    		UV Index 0 Low SPF: no
    05:00 Scattered clouds -5° Scattered clouds
    Feels Like -9°
    Gentle southwest wind Southwest 10 - 16 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 72%
    • Dew Point Dew Point -9 °C
    • Clouds Clouds 29%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -9 °C
    • Wind Wind - Average 10 km/h
    • Pressure Pressure 1032 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 16 km/h
    • Visibility Visibility 45 km
    06:00 Scattered clouds -5° Scattered clouds
    Feels Like -8°
    Gentle southwest wind Southwest 9 - 17 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 76%
    • Dew Point Dew Point -8 °C
    • Clouds Clouds 50%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -8 °C
    • Wind Wind - Average 9 km/h
    • Pressure Pressure 1032 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 17 km/h
    • Visibility Visibility 45 km
    07:00 Partly cloudy -4° Partly cloudy
    Feels Like -8°
    Gentle southwest wind Southwest 10 - 17 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 81%
    • Dew Point Dew Point -7 °C
    • Clouds Clouds 83%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -8 °C
    • Wind Wind - Average 10 km/h
    • Pressure Pressure 1031 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 17 km/h
    • Visibility Visibility 45 km
    Overcast 08:00 Overcast -3° Overcast
    Feels Like -7°
    Moderate southwest wind Southwest 13 - 22 km/h
    		UV Index 0 Low SPF: no
    08:00 Overcast -3° Overcast
    Feels Like -7°
    Moderate southwest wind Southwest 13 - 22 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 81%
    • Dew Point Dew Point -6 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -7 °C
    • Wind Wind - Average 13 km/h
    • Pressure Pressure 1032 hPa
    • Snowline Snowline 0 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 22 km/h
    • Visibility Visibility 45 km
    09:00 Overcast -2° Overcast
    Feels Like -6°
    Moderate southwest wind Southwest 16 - 27 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 73%
    • Dew Point Dew Point -6 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -6 °C
    • Wind Wind - Average 16 km/h
    • Pressure Pressure 1032 hPa
    • Snowline Snowline 2625 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 27 km/h
    • Visibility Visibility 40 km
    10:00 Overcast 0° Overcast
    Feels Like -4°
    Moderate southwest wind Southwest 15 - 29 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 67%
    • Dew Point Dew Point -5 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -4 °C
    • Wind Wind - Average 15 km/h
    • Pressure Pressure 1031 hPa
    • Snowline Snowline 3281 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 29 km/h
    • Visibility Visibility 35 km
    Overcast 11:00 Overcast 1° Overcast
    Feels Like -3°
    Moderate southwest wind Southwest 18 - 34 km/h
    		UV Index 1 Low SPF: no
    11:00 Overcast 1° Overcast
    Feels Like -3°
    Moderate southwest wind Southwest 18 - 34 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 10% 0 mm
    • Humidity Humidity 63%
    • Dew Point Dew Point -5 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -3 °C
    • Wind Wind - Average 18 km/h
    • Pressure Pressure 1031 hPa
    • Snowline Snowline 2625 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 34 km/h
    • Visibility Visibility 20 km
    12:00 Overcast 1° Overcast
    Feels Like -3°
    Moderate southwest wind Southwest 17 - 34 km/h
    		UV Index 1 Low SPF: no
    • Rain Rain 20% 0 mm
    • Humidity Humidity 62%
    • Dew Point Dew Point -5 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -3 °C
    • Wind Wind - Average 17 km/h
    • Pressure Pressure 1030 hPa
    • Snowline Snowline 984 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 34 km/h
    • Visibility Visibility 10 km
    13:00 Snow with cloudy skies 50% 0.08 in 1° Snow
    Feels Like -2°
    Moderate southwest wind Southwest 16 - 33 km/h
    		UV Index 1 Low SPF: no
    • Snow Snow 50% 0.08 in
    • Humidity Humidity 60%
    • Dew Point Dew Point -5 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -2 °C
    • Wind Wind - Average 16 km/h
    • Pressure Pressure 1030 hPa
    • Snowline Snowline 984 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 33 km/h
    • Visibility Visibility 6 km
    Snow 14:00 Snow with cloudy skies 80% 0.12 in 1° Snow
    Feels Like -3°
    Moderate southwest wind Southwest 13 - 31 km/h
    		UV Index 0 Low SPF: no
    14:00 Snow with cloudy skies 80% 0.8 in 1° Snow
    Feels Like -3°
    Moderate southwest wind Southwest 13 - 31 km/h
    		UV Index 0 Low SPF: no
    • Snow Snow 80% 0.12 in
    • Humidity Humidity 66%
    • Dew Point Dew Point -5 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -3 °C
    • Wind Wind - Average 13 km/h
    • Pressure Pressure 1029 hPa
    • Snowline Snowline 984 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 31 km/h
    • Visibility Visibility 5 km
    15:00 Snow with cloudy skies 80% 0.12 in 0° Snow
    Feels Like -3°
    Moderate southwest wind Southwest 11 - 24 km/h
    		UV Index 0 Low SPF: no
    • Snow Snow 80% 0.12 in
    • Humidity Humidity 73%
    • Dew Point Dew Point -4 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -3 °C
    • Wind Wind - Average 11 km/h
    • Pressure Pressure 1029 hPa
    • Snowline Snowline 984 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 24 km/h
    • Visibility Visibility 6 km
    16:00 Snow with cloudy skies 80% 0.12 in 0° Snow
    Feels Like -3°
    Moderate southwest wind Southwest 10 - 20 km/h
    		UV Index 0 Low SPF: no
    • Snow Snow 80% 0.12 in
    • Humidity Humidity 82%
    • Dew Point Dew Point -3 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -3 °C
    • Wind Wind - Average 10 km/h
    • Pressure Pressure 1028 hPa
    • Snowline Snowline 3281 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 20 km/h
    • Visibility Visibility 5 km
    Snow 17:00 Snow with cloudy skies 60% 0.08 in -1° Snow
    Feels Like -3°
    Gentle south wind South 9 - 17 km/h
    		UV Index 0 Low SPF: no
    17:00 Snow with cloudy skies 80% 0.5 in -1° Snow
    Feels Like -3°
    Gentle south wind South 9 - 17 km/h
    		UV Index 0 Low SPF: no
    • Snow Snow 60% 0.08 in
    • Humidity Humidity 89%
    • Dew Point Dew Point -2 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -3 °C
    • Wind Wind - Average 9 km/h
    • Pressure Pressure 1028 hPa
    • Snowline Snowline 3609 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 17 km/h
    • Visibility Visibility 12 km
    18:00 Overcast -1° Overcast
    Feels Like -4°
    Gentle south wind South 11 - 18 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 20% 0 mm
    • Humidity Humidity 91%
    • Dew Point Dew Point -2 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -4 °C
    • Wind Wind - Average 11 km/h
    • Pressure Pressure 1027 hPa
    • Snowline Snowline 4265 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 18 km/h
    • Visibility Visibility 20 km
    19:00 Overcast 0° Overcast
    Feels Like -4°
    Moderate southeast wind Southeast 14 - 24 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 20% 0 mm
    • Humidity Humidity 93%
    • Dew Point Dew Point -1 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -4 °C
    • Wind Wind - Average 14 km/h
    • Pressure Pressure 1026 hPa
    • Snowline Snowline 4593 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 24 km/h
    • Visibility Visibility 25 km
    Overcast 20:00 Overcast 0° Overcast
    Feels Like -4°
    Moderate southeast wind Southeast 17 - 28 km/h
    		UV Index 0 Low SPF: no
    20:00 Overcast 0° Overcast
    Feels Like -4°
    Moderate southeast wind Southeast 17 - 28 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 93%
    • Dew Point Dew Point -1 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -4 °C
    • Wind Wind - Average 17 km/h
    • Pressure Pressure 1025 hPa
    • Snowline Snowline 4593 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 28 km/h
    • Visibility Visibility 30 km
    21:00 Overcast 1° Overcast
    Feels Like -4°
    Moderate south wind South 18 - 31 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 88%
    • Dew Point Dew Point -1 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -4 °C
    • Wind Wind - Average 18 km/h
    • Pressure Pressure 1024 hPa
    • Snowline Snowline 4265 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 31 km/h
    • Visibility Visibility 35 km
    22:00 Overcast 1° Overcast
    Feels Like -3°
    Moderate south wind South 18 - 32 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 0% 0 mm
    • Humidity Humidity 84%
    • Dew Point Dew Point -2 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -3 °C
    • Wind Wind - Average 18 km/h
    • Pressure Pressure 1023 hPa
    • Snowline Snowline 4265 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 32 km/h
    • Visibility Visibility 40 km
    Overcast 23:00 Overcast 1° Overcast
    Feels Like -3°
    Moderate southeast wind Southeast 17 - 31 km/h
    		UV Index 0 Low SPF: no
    23:00 Rain and snow with cloudy skies 30% 0.2 mm 1° Rain and snow
    Feels Like -3°
    Moderate southeast wind Southeast 17 - 31 km/h
    		UV Index 0 Low SPF: no
    • Rain Rain 10% 0 mm
    • Humidity Humidity 80%
    • Dew Point Dew Point -2 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.39 in
    • Feels Like Feels Like -3 °C
    • Wind Wind - Average 17 km/h
    • Pressure Pressure 1023 hPa
    • Snowline Snowline 4265 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 31 km/h
    • Visibility Visibility 45 km
    24:00 Rain and snow with cloudy skies 30% 0.08 in 1° Rain and snow
    Feels Like -3°
    Moderate southeast wind Southeast 16 - 29 km/h
    		UV Index 0 Low SPF: no
    • Snow Snow 30% 0.08 in
    • Humidity Humidity 77%
    • Dew Point Dew Point -2 °C
    • Clouds Clouds 100%
    • Snow depth Snow depth 0.79 in
    • Feels Like Feels Like -3 °C
    • Wind Wind - Average 16 km/h
    • Pressure Pressure 1022 hPa
    • Snowline Snowline 3609 ft
    • Fog Fog No
    • Wind - Gusts Wind - Gusts 29 km/h
    • Visibility Visibility 35 km

    Sunrise and Sunset

    Sunrise 07:52 Sunset 16:54
    First light 07:20 Midday 12:23 Last light 17:26
    Day length 9h 2m

    Time remaining until sunrise 7h 34m

    Lunar calendar

    Mon Tue Wed Thu Fri Sat Sun
    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
    4 Full Moon

    Air quality in St. Thomas today

    Detail
    25
    Fair O₃ (60 µg/m³)
    • Little health risk.
    • Sensitive people should consider reducing prolonged or intense outdoor activities if they experience symptoms.

    Weather graphs
    Maximum Minimum Rainfall

    Videos

    More Videos
    A large lenticular cloud covers one of the volcanoes in Kamchatka, Russia
    A large lenticular cloud covers one of the volcanoes in Kamchatka, Russia