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St. Marys, Ontario

25°F
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St. Marys

Ontario

25°
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St. Marys, Ontario Weather
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Today WinterCast

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WinterCast

A coating to an inch

Sat, 2/28, 9:00 PM - Sun, 3/1, 5:00 AM

Snow

0.15 - 0.25 in

Tue, 3/3, 10:00 AM - Tue, 3/3, 7:00 PM

Ice

5 PM

22°
RealFeel® 7°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 1%
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Cloudy

RealFeel Shade™7°

WindNW 14 mph

Air QualityFair

Max UV Index0.1 (Low)

Wind Gusts24 mph

Humidity80%

Indoor Humidity28% (Very Dry)

Dew Point17° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling1800 ft

6 PM

20°
RealFeel® 6°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 4%
Chevron down
Cloudy

RealFeel Shade™6°

WindNNW 13 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts23 mph

Humidity76%

Indoor Humidity26% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling9600 ft

7 PM

20°
RealFeel® 10°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 35%
Chevron down
Cloudy

WindNNW 9 mph

Air QualityFair

Wind Gusts17 mph

Humidity74%

Indoor Humidity26% (Very Dry)

Dew Point13° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling9700 ft

8 PM

20°
RealFeel® 10°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
rain drop 38%
Chevron down
Cloudy

WindN 9 mph

Air QualityFair

Wind Gusts16 mph

Humidity75%

Indoor Humidity26% (Very Dry)

Dew Point13° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling9600 ft

9 PM

19°
RealFeel® 8°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 42%
Chevron down
Snow

WindN 8 mph

Air QualityFair

Wind Gusts15 mph

Humidity78%

Indoor Humidity26% (Very Dry)

Dew Point13° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Snow0.14 in

Visibility5 mi

Cloud Ceiling7000 ft

10 PM

19°
RealFeel® 8°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 44%
Chevron down
Snow

WindN 8 mph

Air QualityFair

Wind Gusts14 mph

Humidity79%

Indoor Humidity26% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Snow0.13 in

Visibility5 mi

Cloud Ceiling6300 ft

11 PM

18°
RealFeel® 9°
Bitterly Cold
RealFeel Guide
Bitterly Cold
-10° to 9°
Caution advised. Frostbite to exposed skin within 15 minutes. Hypothermia likely without protective clothing.
LEARN MORE
rain drop 38%
Chevron down
Cloudy

WindN 8 mph

Air QualityFair

Wind Gusts14 mph

Humidity79%

Indoor Humidity26% (Very Dry)

Dew Point13° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling9600 ft

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World North America Canada Ontario St. Marys

Weather Near St. Marys:

  • Brampton, Ontario
  • Mississauga Valley, Ontario
  • Toronto, Ontario
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