Weather Forecast and Radar for St. Thomas, Ontario

Current & 7-day weather forecast, weather alerts, and weather radar for St. Thomas, Ontario.
All times shown in your local timezone

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Temperature Forecast for St. Thomas, Ontario

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Temperature Forecast for St. Thomas, Ontario

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Weather Radar for St. Thomas, Ontario

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Weather in St. Thomas, ON

St. Thomas, Ontario experiences four distinct seasons throughout the year. In the summer months, temperatures typically range from 18-27°C with occasional days reaching up to 30°C. Humidity levels can be high, but temperatures are often cooled by breezes coming off Lake Erie.

In the fall, temperatures tend to range between 8-15°C with some colder days reaching below 0°C. Rainfall is common during this season, as well as fog and mist.

Winter temperatures in St. Thomas can dip down to as low as -18°C, with periodic snowfall throughout the season.

Spring temperatures are usually mild, ranging from 7-20°C. Rainfall is common during this season, as the area experiences an increase in precipitation.

Fast Facts About St. Thomas, ON

As of 2020, the city population is 61707.

Major Cities Nearby St. Thomas, ON

This map shows the current & 7-day weather forecast, weather alerts, and weather radar for St. Thomas, Ontario.