St. Marys
Southwestern Ontario, Ontario, Canada
Current Weather
7°44°
Clear
Feels Like: -3°27°
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 starting in the afternoon.
Hourly Forecast
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Air Quality
Air quality is satisfactory, and air pollution poses little or no risk.
Daylight Hours
07:59
Sunrise
18:17
Sunset
Moon
17:49
Moonrise
07:14
Moonset
Daily Forecast
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UV Index
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View stargazing scoreWeather in St. Marys today, October 25, 2026
St. Marys stays under cloudy skies on October 25, 2026, with only brief brighter breaks. Plan for a day that feels grey more often than open. The opening hours look fair, as cloud stays near 7% around 09:00. Morning errands should face fewer weather interruptions.St. Marys stays under cloudy skies on October 25, 2026, with only brief brighter breaks. Plan for a day that feels grey more often than open. The opening hours look fair, as cloud stays near 7% around 09:00. Morning errands should face fewer weather interruptions.
The temperature range runs from about 3°C up to 18°C. The air stays humid, with relative humidity between 44% and 96% and the peak around 09:00. Airflow remains manageable, reaching about 17 km/h around 12:00.The temperature range runs from about 38°F up to 64°F. The air stays humid, with relative humidity between 44% and 96% and the peak around 09:00. Airflow remains manageable, reaching about 10 mph around 12:00.
Afternoon skies stay clogged, peaking close to 100% near 13:00. The grey theme continues rather than clearing out. Visibility holds near 15.8 km, though it can fall to 13.9 km. Expect sunrise at 07:59, sunset at 18:17, and 10 hours 18 minutes of sunlight today overall.Afternoon skies stay clogged, peaking close to 100% near 13:00. The grey theme continues rather than clearing out. Visibility holds near 9.8 mi, though it can fall to 8.6 mi. Expect sunrise at 07:59, sunset at 18:17, and 10 hours 18 minutes of sunlight today overall.
The practical takeaway for St. Marys on October 25, 2026 is a cloudy day that stays usable, just not particularly bright, around 18°C.The practical takeaway for St. Marys on October 25, 2026 is a cloudy day that stays usable, just not particularly bright, around 64°F.
Frequently asked questions about weather in St. Marys
How warm does it get in St. Marys?
The warmest month in St. Marys is July, with average high temperatures of 27°C. The average temperature during this period is around 21°C.The warmest month in St. Marys is July, with average high temperatures of 80°F. The average temperature during this period is around 70°F.
How cold does it get in St. Marys?
The coldest month in St. Marys is January, with average low temperatures of -7°C. The average temperature during this period is around -4°C.The coldest month in St. Marys is January, with average low temperatures of 19°F. The average temperature during this period is around 24°F.
What is the wettest time of year in St. Marys?
The wettest month in St. Marys is August, with an average of 106 mm of precipitation.The wettest month in St. Marys is August, with an average of 4.2 in of precipitation.
What is the driest time of year in St. Marys?
The driest month in St. Marys is September, with an average of 73 mm of precipitation.The driest month in St. Marys is September, with an average of 2.9 in of precipitation.