St. Thomas, ON Weather

02:23 Saturday Artboard
Overcast Overcast -6° Feels like -13° West West 26 - 48 km/h
  • Today 4 Jan. Overcast -4° / -9° Calm 31 - 59 km/h
  • Tomorrow 5 Jan. Overcast -5° / -10° Calm 24 - 49 km/h
  • Monday 6 Jan. Partly cloudy -5° / -9° Calm 20 - 40 km/h
  • Tuesday 7 Jan. Snow 70% 1.8 mm -5° / -9° Calm 25 - 47 km/h
  • Wednesday 8 Jan. Snow 80% 0.7 mm -6° / -12° Calm 22 - 43 km/h
  • Thursday 9 Jan. Snow 80% 2.2 mm -5° / -12° Calm 29 - 56 km/h
  • Friday 10 Jan. Snow 40% 0.8 mm -5° / -11° Calm 20 - 39 km/h

Weather Forecast for St. Thomas, ON Today

, 4 January

Tomorrow

, 5 January
02:00 Overcast -6° Overcast
Feels Like -13°
Calm West 26 - 48 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 73%
  • Dew Point Dew Point -10 °C
  • Clouds Clouds 99%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -13 °C
  • Wind Wind - Average 26 km/h
  • Pressure Pressure 1017 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 48 km/h
  • Visibility Visibility 20 km
03:00 Overcast -6° Overcast
Feels Like -13°
Calm West 26 - 49 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 72%
  • Dew Point Dew Point -10 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -13 °C
  • Wind Wind - Average 26 km/h
  • Pressure Pressure 1018 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 49 km/h
  • Visibility Visibility 14 km
04:00 Overcast -7° Overcast
Feels Like -14°
Calm West 25 - 49 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 74%
  • Dew Point Dew Point -11 °C
  • Clouds Clouds 99%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -14 °C
  • Wind Wind - Average 25 km/h
  • Pressure Pressure 1018 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 49 km/h
  • Visibility Visibility 12 km
Overcast 05:00 Overcast -7° Overcast
Feels Like -14°
Calm West 24 - 47 km/h
UV Index 0 Low SPF: no
Overcast 05:00 Overcast -7° Overcast
Feels Like -14°
Calm West 24 - 47 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 73%
  • Dew Point Dew Point -11 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -14 °C
  • Wind Wind - Average 24 km/h
  • Pressure Pressure 1018 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 47 km/h
  • Visibility Visibility 12 km
06:00 Overcast -7° Overcast
Feels Like -14°
Calm West 24 - 46 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 72%
  • Dew Point Dew Point -11 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -14 °C
  • Wind Wind - Average 24 km/h
  • Pressure Pressure 1019 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 46 km/h
  • Visibility Visibility 12 km
07:00 Overcast -7° Overcast
Feels Like -15°
Calm West 24 - 47 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 71%
  • Dew Point Dew Point -12 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -15 °C
  • Wind Wind - Average 24 km/h
  • Pressure Pressure 1019 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 47 km/h
  • Visibility Visibility 16 km
Overcast 08:00 Overcast -8° Overcast
Feels Like -15°
Calm West 24 - 45 km/h
UV Index 0 Low SPF: no
Overcast 08:00 Overcast -8° Overcast
Feels Like -15°
Calm West 24 - 45 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 71%
  • Dew Point Dew Point -12 °C
  • Clouds Clouds 97%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -15 °C
  • Wind Wind - Average 24 km/h
  • Pressure Pressure 1019 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 45 km/h
  • Visibility Visibility 20 km
09:00 Overcast -8° Overcast
Feels Like -16°
Calm West 25 - 46 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 70%
  • Dew Point Dew Point -13 °C
  • Clouds Clouds 98%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -16 °C
  • Wind Wind - Average 25 km/h
  • Pressure Pressure 1019 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 46 km/h
  • Visibility Visibility 25 km
10:00 Overcast -8° Overcast
Feels Like -15°
Calm West 27 - 50 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 68%
  • Dew Point Dew Point -12 °C
  • Clouds Clouds 99%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -15 °C
  • Wind Wind - Average 27 km/h
  • Pressure Pressure 1020 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 50 km/h
  • Visibility Visibility 25 km
Overcast 11:00 Overcast -7° Overcast
Feels Like -15°
Calm West 31 - 58 km/h
UV Index 0 Low SPF: no
Overcast 11:00 Overcast -7° Overcast
Feels Like -15°
Calm West 31 - 58 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 66%
  • Dew Point Dew Point -12 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -15 °C
  • Wind Wind - Average 31 km/h
  • Pressure Pressure 1020 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 58 km/h
  • Visibility Visibility 20 km
12:00 Overcast -6° Overcast
Feels Like -14°
Calm West 31 - 59 km/h
UV Index 1 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 66%
  • Dew Point Dew Point -12 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -14 °C
  • Wind Wind - Average 31 km/h
  • Pressure Pressure 1020 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 59 km/h
  • Visibility Visibility 18 km
13:00 Overcast -6° Overcast
Feels Like -14°
Calm West 30 - 59 km/h
UV Index 1 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 63%
  • Dew Point Dew Point -12 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -14 °C
  • Wind Wind - Average 30 km/h
  • Pressure Pressure 1020 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 59 km/h
  • Visibility Visibility 18 km
Overcast 14:00 Overcast -6° Overcast
Feels Like -14°
Calm West 28 - 55 km/h
UV Index 0 Low SPF: no
Overcast 14:00 Overcast -6° Overcast
Feels Like -14°
Calm West 28 - 55 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 63%
  • Dew Point Dew Point -12 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -14 °C
  • Wind Wind - Average 28 km/h
  • Pressure Pressure 1020 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 55 km/h
  • Visibility Visibility 16 km
15:00 Overcast -6° Overcast
Feels Like -14°
Calm West 27 - 52 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 62%
  • Dew Point Dew Point -12 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -14 °C
  • Wind Wind - Average 27 km/h
  • Pressure Pressure 1020 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 52 km/h
  • Visibility Visibility 20 km
16:00 Overcast -7° Overcast
Feels Like -14°
Calm West 26 - 55 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 63%
  • Dew Point Dew Point -13 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -14 °C
  • Wind Wind - Average 26 km/h
  • Pressure Pressure 1020 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 55 km/h
  • Visibility Visibility 20 km
Overcast 17:00 Overcast -7° Overcast
Feels Like -14°
Calm West 24 - 48 km/h
UV Index 0 Low SPF: no
Overcast 17:00 Overcast -7° Overcast
Feels Like -14°
Calm West 24 - 48 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 63%
  • Dew Point Dew Point -13 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -14 °C
  • Wind Wind - Average 24 km/h
  • Pressure Pressure 1020 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 48 km/h
  • Visibility Visibility 18 km
18:00 Overcast -7° Overcast
Feels Like -14°
Calm West 23 - 44 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 66%
  • Dew Point Dew Point -12 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -14 °C
  • Wind Wind - Average 23 km/h
  • Pressure Pressure 1020 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 44 km/h
  • Visibility Visibility 25 km
19:00 Overcast -7° Overcast
Feels Like -14°
Calm West 24 - 48 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 66%
  • Dew Point Dew Point -12 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -14 °C
  • Wind Wind - Average 24 km/h
  • Pressure Pressure 1020 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 48 km/h
  • Visibility Visibility 25 km
Overcast 20:00 Overcast -7° Overcast
Feels Like -15°
Calm West 24 - 46 km/h
UV Index 0 Low SPF: no
Overcast 20:00 Overcast -7° Overcast
Feels Like -15°
Calm West 24 - 46 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 66%
  • Dew Point Dew Point -13 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 2 cm
  • Feels Like Feels Like -15 °C
  • Wind Wind - Average 24 km/h
  • Pressure Pressure 1021 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 46 km/h
  • Visibility Visibility 25 km
21:00 Overcast -8° Overcast
Feels Like -15°
Calm West 24 - 46 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 67%
  • Dew Point Dew Point -13 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 1 cm
  • Feels Like Feels Like -15 °C
  • Wind Wind - Average 24 km/h
  • Pressure Pressure 1021 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 46 km/h
  • Visibility Visibility 20 km
22:00 Overcast -8° Overcast
Feels Like -16°
Calm West 25 - 47 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 67%
  • Dew Point Dew Point -13 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 1 cm
  • Feels Like Feels Like -16 °C
  • Wind Wind - Average 25 km/h
  • Pressure Pressure 1021 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 47 km/h
  • Visibility Visibility 25 km
Overcast 23:00 Overcast -8° Overcast
Feels Like -16°
Calm West 25 - 48 km/h
UV Index 0 Low SPF: no
Overcast 23:00 Overcast -8° Overcast
Feels Like -16°
Calm West 25 - 48 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 66%
  • Dew Point Dew Point -13 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 1 cm
  • Feels Like Feels Like -16 °C
  • Wind Wind - Average 25 km/h
  • Pressure Pressure 1021 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 48 km/h
  • Visibility Visibility 25 km
24:00 Overcast -8° Overcast
Feels Like -16°
Calm West 25 - 48 km/h
UV Index 0 Low SPF: no
  • Rain Rain 0% 0 mm
  • Humidity Humidity 67%
  • Dew Point Dew Point -13 °C
  • Clouds Clouds 100%
  • Snow depth Snow depth 1 cm
  • Feels Like Feels Like -16 °C
  • Wind Wind - Average 25 km/h
  • Pressure Pressure 1021 hPa
  • Snowline Snowline 0 m
  • Fog Fog No
  • Wind - Gusts Wind - Gusts 48 km/h
  • Visibility Visibility 25 km

Air quality in St. Thomas 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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