St. Thomas
Southwestern Ontario, Ontario, Canada
Current Weather
15°60°
Overcast
Feels Like: 16°61°
Min: 3°38°
Max: 18°64°
The next few hours will be clear, with today reaching 18°C and dropping to 6°C. The coming days will be partly cloudy from afternoon until night.
Hourly Forecast
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Air Quality
Air quality is satisfactory, and air pollution poses little or no risk.
Daylight Hours
07:58
Sunrise
18:18
Sunset
Moon
17:51
Moonrise
07:14
Moonset
Daily Forecast
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Monday
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UV Index
Humidity
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View stargazing scoreWeather in St. Thomas today, October 25, 2026
St. Thomas looks cloudy on October 25, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward.St. Thomas looks cloudy on October 25, 2026, with grey skies for much of the day. Sunshine stays limited, so the overall tone is muted from the morning onward.
Temperatures climb from an overnight low near 3°C toward a daytime high of about 18°C. Relative humidity sits between 71% and 97%, reaching its peak around 22:00. A lighter breeze peaks around 17:00 near 14 km/h.Temperatures climb from an overnight low near 38°F toward a daytime high of about 64°F. Relative humidity sits between 71% and 97%, reaching its peak around 22:00. A lighter breeze peaks around 17:00 near 9 mph.
Afternoon skies stay clogged, peaking close to 100% near 17:00. The grey theme continues rather than clearing out. Visibility holds near 14.3 km, though it can fall to 13.1 km. Sunrise is at 07:58 and sunset at 18:18, giving 10 hours 20 minutes of sunlight today.Afternoon skies stay clogged, peaking close to 100% near 17:00. The grey theme continues rather than clearing out. Visibility holds near 8.9 mi, though it can fall to 8.1 mi. Sunrise is at 07:58 and sunset at 18:18, giving 10 hours 20 minutes of sunlight today.
Taken together, overcast skies in St. Thomas on October 25, 2026 favour indoor or covered options, with temperatures near 18°C.Taken together, overcast skies in St. Thomas on October 25, 2026 favour indoor or covered options, with temperatures near 64°F.
Frequently asked questions about weather in St. Thomas
How warm does it get in St. Thomas?
The warmest month in St. Thomas is July, with average high temperatures of 26°C. The average temperature during this period is around 22°C.The warmest month in St. Thomas is July, with average high temperatures of 78°F. The average temperature during this period is around 72°F.
How cold does it get in St. Thomas?
The coldest month in St. Thomas is January, with average low temperatures of -5°C. The average temperature during this period is around -3°C.The coldest month in St. Thomas is January, with average low temperatures of 23°F. The average temperature during this period is around 27°F.
What is the wettest time of year in St. Thomas?
The wettest month in St. Thomas is April, with an average of 103 mm of precipitation.The wettest month in St. Thomas is April, with an average of 4 in of precipitation.
What is the driest time of year in St. Thomas?
The driest month in St. Thomas is September, with an average of 66 mm of precipitation.The driest month in St. Thomas is September, with an average of 2.6 in of precipitation.