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St. Marys, Ontario

64°F
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St. Marys

Ontario

64°
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St. Marys, Ontario Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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1 AM

64°
RealFeel® 58°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 71%
Chevron down
Showers

WindSSW 12 mph

Air QualityFair

Wind Gusts23 mph

Humidity93%

Indoor Humidity80% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Rain0.05 in

Visibility10 mi

Cloud Ceiling6500 ft

2 AM

64°
RealFeel® 60°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 25%
Chevron down
Cloudy

WindSSW 13 mph

Air QualityFair

Wind Gusts29 mph

Humidity96%

Indoor Humidity82% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover98%

Visibility10 mi

Cloud Ceiling4000 ft

3 AM

64°
RealFeel® 61°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

WindSSW 13 mph

Air QualityFair

Wind Gusts29 mph

Humidity96%

Indoor Humidity83% (Humid)

Dew Point63° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover98%

Visibility10 mi

Cloud Ceiling2400 ft

4 AM

64°
RealFeel® 62°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

WindWSW 12 mph

Air QualityFair

Wind Gusts28 mph

Humidity95%

Indoor Humidity84% (Humid)

Dew Point63° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling2400 ft

5 AM

65°
RealFeel® 62°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

WindWSW 12 mph

Air QualityFair

Wind Gusts27 mph

Humidity94%

Indoor Humidity85% (Humid)

Dew Point63° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2400 ft

6 AM

65°
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 20%
Chevron down
Cloudy

RealFeel Shade™63°

WindWSW 12 mph

Air QualityFair

Max UV Index0.1 (Low)

Wind Gusts27 mph

Humidity95%

Indoor Humidity86% (Humid)

Dew Point64° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2400 ft

7 AM

65°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 25%
Chevron down
Cloudy

RealFeel Shade™64°

WindW 10 mph

Air QualityFair

Max UV Index0.3 (Low)

Wind Gusts27 mph

Humidity97%

Indoor Humidity88% (Humid)

Dew Point64° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2400 ft

8 AM

66°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 43%
Chevron down
Cloudy

RealFeel Shade™64°

WindW 10 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts27 mph

Humidity96%

Indoor Humidity88% (Humid)

Dew Point64° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Visibility10 mi

Cloud Ceiling2400 ft

9 AM

67°
RealFeel® 66°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Cloudy

RealFeel Shade™66°

WindW 10 mph

Air QualityFair

Max UV Index0.8 (Low)

Wind Gusts27 mph

Humidity94%

Indoor Humidity90% (Humid)

Dew Point65° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling2400 ft

10 AM

68°
RealFeel® 65°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 51%
Chevron down
Thunderstorms

RealFeel Shade™65°

WindW 10 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts27 mph

Humidity91%

Indoor Humidity91% (Humid)

Dew Point65° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Rain0.08 in

Visibility5 mi

Cloud Ceiling2400 ft

11 AM

70°
RealFeel® 70°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 19%
Chevron down
Cloudy

RealFeel Shade™68°

WindW 10 mph

Air QualityFair

Max UV Index1.7 (Low)

Wind Gusts27 mph

Humidity87%

Indoor Humidity87% (Humid)

Dew Point66° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling2400 ft

12 PM

70°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 15%
Chevron down
Cloudy

RealFeel Shade™69°

WindW 10 mph

Air QualityFair

Max UV Index2.4 (Low)

Wind Gusts27 mph

Humidity83%

Indoor Humidity83% (Humid)

Dew Point65° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover97%

Visibility10 mi

Cloud Ceiling2500 ft

1 PM

71°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 19%
Chevron down
Cloudy

RealFeel Shade™69°

WindW 10 mph

Air QualityFair

Max UV Index2.7 (Moderate)

Wind Gusts25 mph

Humidity79%

Indoor Humidity79% (Humid)

Dew Point64° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover96%

Visibility10 mi

Cloud Ceiling2500 ft

2 PM

71°
RealFeel® 69°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 51%
Chevron down
Thunderstorms

RealFeel Shade™66°

WindW 10 mph

Air QualityFair

Max UV Index2.0 (Low)

Wind Gusts25 mph

Humidity76%

Indoor Humidity76% (Humid)

Dew Point64° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover94%

Rain0.05 in

Visibility5 mi

Cloud Ceiling2500 ft

3 PM

73°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 47%
Chevron down
Mostly cloudy

RealFeel Shade™70°

WindW 10 mph

Air QualityFair

Max UV Index2.3 (Low)

Wind Gusts25 mph

Humidity72%

Indoor Humidity72% (Humid)

Dew Point63° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover88%

Visibility10 mi

Cloud Ceiling2500 ft

4 PM

74°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 40%
Chevron down
Mostly cloudy

RealFeel Shade™71°

WindW 10 mph

Air QualityFair

Max UV Index1.7 (Low)

Wind Gusts27 mph

Humidity69%

Indoor Humidity69% (Humid)

Dew Point63° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover82%

Visibility10 mi

Cloud Ceiling2400 ft

5 PM

75°
RealFeel® 73°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 34%
Chevron down
Mostly cloudy

RealFeel Shade™72°

WindW 10 mph

Air QualityFair

Max UV Index1.4 (Low)

Wind Gusts27 mph

Humidity65%

Indoor Humidity65% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling2400 ft

6 PM

73°
RealFeel® 74°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 34%
Chevron down
Intermittent clouds

RealFeel Shade™71°

WindW 9 mph

Air QualityFair

Max UV Index2.2 (Low)

Wind Gusts24 mph

Humidity68%

Indoor Humidity68% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover52%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

72°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 29%
Chevron down
Mostly sunny

RealFeel Shade™70°

WindWNW 8 mph

Air QualityFair

Max UV Index1.3 (Low)

Wind Gusts20 mph

Humidity70%

Indoor Humidity70% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover28%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

70°
RealFeel® 69°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 20%
Chevron down
Mostly sunny

RealFeel Shade™69°

WindWNW 7 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts17 mph

Humidity76%

Indoor Humidity76% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

69°
RealFeel® 67°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 20%
Chevron down
Mostly sunny

RealFeel Shade™67°

WindWNW 7 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts14 mph

Humidity78%

Indoor Humidity78% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

66°
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 20%
Chevron down
Mostly clear

WindNW 7 mph

Air QualityFair

Wind Gusts14 mph

Humidity83%

Indoor Humidity78% (Slightly Humid)

Dew Point61° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

63°
RealFeel® 62°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
rain drop 20%
Chevron down
Mostly clear

WindNW 6 mph

Air QualityFair

Wind Gusts13 mph

Humidity87%

Indoor Humidity74% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for St. Marys

AccuWeather's hourly forecast for St. Marys provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 64° with a RealFeel® of 58°, showers with a 71% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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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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