Nearby locations
St. Thomas, Ontario, Canada
Port Stanley, Ontario, Canada
Belmont, Ontario, Canada
Nearby popular places
St. Thomas Municipal Airport, Canada
Sanders Pond, Canada
Springwater Conservation Area, Canada

Weather in St. Thomas, Canada

62°
Clear
Feels like 62°
·
High78°Low49°
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Air quality

Full Details
0
53
500
Air quality:Moderate

Pollen index

Full Details
Tree
0/5
012345
Weed
0/5
012345
Grass
0/5
012345

Tomorrow's weather summary

The weather in St. Thomas on Saturday, May 11th, will be clear throughout the day.

Also, there's a high chance of few clouds during the morning, around 10 am.

Weather details for St. Thomas, on Saturday, May 11th:

The highest temperature during the day is going to be 70°F at about 6 pm. The day will have high relative humidity, with average humidity of 62%, ranging from 40% to a maximum value of 82% at about 7 am. The wind will be light, and will get up to 8 mph at midnight, blowing from the north-west. The cloud coverage will range from 0% around midnight to as high as 100% around 10 pm with an average of 17%.

There is no probability for any precipitation throughout the day. The dew point will range from 44°F up to a maximum value of 51°F around 11 pm.

The visibility is expected to be good with average visibility of 10 mi throughout the day. Atmospheric pressure will be normal with average pressure of 1011 hPa. Sunrise will be at 6:19 am, and sunset at 8:05 pm. The day will have 13 hours and 46 minutes of daylight.

Air quality forecast for St. Thomas, on Saturday, May 11th:

On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 27 and 46.

Pollen forecast for St. Thomas, on Saturday, May 11th:

Tree pollen on this day is expected to have very high risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have medium risk.

The weather in St. Thomas on Sunday, May 12th, will be clear for most of the day, together with cloud overcast before dawn.

There's seems to be also high probability of some clouds before dawn at about 1 am.

Weather information for St. Thomas, on Sunday, May 12th:

The maximum temperature of the day will be 75°F around 3 pm. The day will have comfortable humidity, with average humidity of 59%, ranging from 31% to a maximum value of 88% at about 6 am. The wind will be breezy, and will get up to 12 mph at noon, blowing from the north-west. The cloud coverage will range from 0% around 6 am to as high as 100% around midnight with an average of 21%.

There is no probability for any precipitation throughout the day. The dew point will range from 42°F up to a maximum value of 54°F around 8 am.

The visibility is expected to be good with average visibility of 10 mi throughout the day. Atmospheric pressure will be normal with average pressure of 1012 hPa. Sunrise will be at 6:18 am, and sunset at 8:05 pm. The day will have 13 hours and 47 minutes of daylight.

Air quality forecast for St. Thomas, on Sunday, May 12th:

On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 32 and 45.

Pollen forecast for St. Thomas, on Sunday, May 12th:

Tree pollen on this day is expected to have very high risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have very high risk.

FAQ

How warm does it get in St. Thomas?
The average annual highest temperature in St. Thomas is 27.0°C (80.6°F), and the July 18th is the hottest day on average.
How cold does it get in St. Thomas?
The average annual lowest temperature in St. Thomas is -10.5°C (13.1°F), and the January 21st is the coldest day on average.
Which month has the most rain in St. Thomas?
The wettest months in St. Thomas are October and May.
What months does it snow in St. Thomas?
The most common time of year for snow is February, January, December and March.