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St. Marys, Ontario

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St. Marys, Ontario Weather
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Winter Center
Today WinterCast

Hourly

 Daily Radar MinuteCast® Monthly Air Quality Health & Activities

WinterCast

A coating to an inch

Sun, 12/14, 10:00 PM - Mon, 12/15, 7:00 PM

Snow

3 AM

14°
RealFeel® 1°
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 55%
Chevron down
Flurries

WindW 9 mph

Air QualityExcellent

Wind Gusts21 mph

Humidity100%

Indoor Humidity27% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Snowtrace

Visibility10 mi

Cloud Ceiling2000 ft

4 AM

16°
RealFeel® 2°
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 36%
Chevron down
Cloudy

WindW 10 mph

Air QualityExcellent

Wind Gusts23 mph

Humidity100%

Indoor Humidity28% (Very Dry)

Dew Point16° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2000 ft

5 AM

17°
RealFeel® 3°
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 41%
Chevron down
Flurries

WindW 12 mph

Air QualityExcellent

Wind Gusts22 mph

Humidity93%

Indoor Humidity28% (Very Dry)

Dew Point16° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Snowtrace

Visibility10 mi

Cloud Ceiling2000 ft

6 AM

18°
RealFeel® 5°
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

WindWSW 10 mph

Air QualityExcellent

Wind Gusts22 mph

Humidity91%

Indoor Humidity27% (Very Dry)

Dew Point15° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2000 ft

7 AM

19°
RealFeel® 4°
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 35%
Chevron down
Cloudy

WindWSW 13 mph

Air QualityExcellent

Wind Gusts23 mph

Humidity86%

Indoor Humidity27% (Very Dry)

Dew Point15° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2000 ft

8 AM

18°
RealFeel® 3°
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 39%
Chevron down
Cloudy

RealFeel Shade™3°

WindWSW 13 mph

Air QualityExcellent

Max UV Index0.1 (Low)

Wind Gusts23 mph

Humidity88%

Indoor Humidity27% (Very Dry)

Dew Point15° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2000 ft

9 AM

17°
RealFeel® 0°
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
Flurries

RealFeel Shade™0°

WindSW 13 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts24 mph

Humidity90%

Indoor Humidity27% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Snow0.1

Visibility6 mi

Cloud Ceiling2000 ft

10 AM

17°
RealFeel® 0°
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 46%
Chevron down
Flurries

RealFeel Shade™0°

WindSW 14 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts25 mph

Humidity88%

Indoor Humidity26% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Snow0.1

Visibility10 mi

Cloud Ceiling7000 ft

11 AM

17°
RealFeel® -2°
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 46%
Chevron down
Flurries

RealFeel Shade™-2°

WindSW 15 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts28 mph

Humidity87%

Indoor Humidity26% (Very Dry)

Dew Point13° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Snow0.1

Visibility6 mi

Cloud Ceiling4000 ft

12 PM

17°
RealFeel® -1°
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

RealFeel Shade™-1°

WindSW 16 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts30 mph

Humidity86%

Indoor Humidity26% (Very Dry)

Dew Point14° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling7000 ft

1 PM

17°
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 51%
Chevron down
Flurries

RealFeel Shade™-6°

WindSW 21 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts39 mph

Humidity85%

Indoor Humidity26% (Very Dry)

Dew Point13° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Snow0.1

Visibility6 mi

Cloud Ceiling7000 ft

2 PM

17°
RealFeel® -5°
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 46%
Chevron down
Cloudy

RealFeel Shade™-5°

WindSW 21 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts39 mph

Humidity83%

Indoor Humidity26% (Very Dry)

Dew Point13° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover98%

Visibility10 mi

Cloud Ceiling4000 ft

3 PM

16°
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 42%
Chevron down
Cloudy

RealFeel Shade™-6°

WindSW 21 mph

Air QualityFair

Max UV Index0.3 (Low)

Wind Gusts38 mph

Humidity81%

Indoor Humidity25% (Very Dry)

Dew Point12° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover96%

Visibility10 mi

Cloud Ceiling9400 ft

4 PM

15°
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 48%
Chevron down
Cloudy

RealFeel Shade™-7°

WindSW 20 mph

Air QualityFair

Max UV Index0.1 (Low)

Wind Gusts36 mph

Humidity81%

Indoor Humidity24% (Very Dry)

Dew Point10° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling6000 ft

5 PM

14°
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 52%
Chevron down
Flurries

WindSW 18 mph

Air QualityFair

Wind Gusts33 mph

Humidity82%

Indoor Humidity24% (Very Dry)

Dew Point10° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover96%

Snow0.1

Visibility6 mi

Cloud Ceiling6000 ft

6 PM

14°
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 52%
Chevron down
Flurries

WindSW 16 mph

Air QualityFair

Wind Gusts30 mph

Humidity83%

Indoor Humidity23% (Very Dry)

Dew Point9° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover98%

Snow0.1

Visibility6 mi

Cloud Ceiling2400 ft

7 PM

13°
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 25%
Chevron down
Cloudy

WindSW 15 mph

Air QualityFair

Wind Gusts29 mph

Humidity83%

Indoor Humidity23% (Very Dry)

Dew Point9° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility5 mi

Cloud Ceiling2000 ft

8 PM

13°
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 20%
Chevron down
Cloudy

WindSW 15 mph

Air QualityFair

Wind Gusts28 mph

Humidity84%

Indoor Humidity23% (Very Dry)

Dew Point9° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility5 mi

Cloud Ceiling2000 ft

9 PM

13°
RealFeel® -5°
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 20%
Chevron down
Cloudy

WindSW 14 mph

Air QualityFair

Wind Gusts27 mph

Humidity84%

Indoor Humidity23% (Very Dry)

Dew Point9° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility5 mi

Cloud Ceiling2000 ft

10 PM

13°
RealFeel® -4°
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 20%
Chevron down
Cloudy

WindSW 14 mph

Air QualityFair

Wind Gusts25 mph

Humidity85%

Indoor Humidity24% (Very Dry)

Dew Point9° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility5 mi

Cloud Ceiling2000 ft

11 PM

13°
RealFeel® -3°
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 20%
Chevron down
Cloudy

WindSW 13 mph

Air QualityFair

Wind Gusts23 mph

Humidity86%

Indoor Humidity24% (Very Dry)

Dew Point10° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility5 mi

Cloud Ceiling2000 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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