Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™

St. Jacobs, Ontario

75°F
Location Chevron down
Location News Videos
Use Current Location
Recent

St. Jacobs

Ontario

75°
No results found.
Try searching for a city, zip code or point of interest.
Get Premium+
Create Your Account Unlock extended daily and hourly forecasts — all with your free account.
Let's Go Chevron right
Have an account already? Log In
settings
Help
St. Jacobs, Ontario Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

News & Features

Astronomy

Business

Climate

Health

Recreation

Sports

Travel

For Business

Warnings

Data Suite

Forensics

Advertising

Superior Accuracy™

Video

Winter Center

Today Hourly

10-Day

Radar MinuteCast® Monthly Air Quality Health & Activities

Unlock extended 90-day forecasts

Activate Your Premium+ Subscription

Chevron right

August 29 - September 12

Sat 8/29

79° /61°
6%
Pleasant with times of clouds and sun

RealFeel®81°

RealFeel Shade™75°

Max UV Index6.0 (High)

WindSW 12 mph

Sun 8/30

70° /63°
55%
Cloudy and not as warm with a thunderstorm in parts of the area

RealFeel®70°

RealFeel Shade™70°

Max UV Index2.0 (Low)

WindSW 6 mph

Total Hours of Precipitation2

Total Hours of Rain2

Mon 8/31

76° /67°
66%
A couple of morning showers; otherwise, humid with times of clouds and sun

RealFeel®80°

RealFeel Shade™75°

Max UV Index5.0 (Moderate)

WindSSE 8 mph

Total Hours of Precipitation1

Total Hours of Rain1

Tue 9/1

81° /65°
55%
Cloudy and humid with a heavy thunderstorm; any thunderstorm can cause flash flooding and damaging winds

RealFeel®88°

RealFeel Shade™86°

Max UV Index2.0 (Low)

WindW 8 mph

Total Hours of Precipitation2

Total Hours of Rain2

Wed 9/2

83° /62°
55%
A blend of sun and clouds with a thunderstorm in the area; very warm and humid; any thunderstorm can cause flash flooding and damaging winds

RealFeel®90°

RealFeel Shade™87°

Max UV Index6.0 (High)

WindW 8 mph

Total Hours of Precipitation1

Total Hours of Rain1

Thu 9/3

77° /57°
10%
Clouds followed by a brightening sky and humid

RealFeel®80°

RealFeel Shade™77°

Max UV Index3.0 (Moderate)

WindNW 7 mph

Fri 9/4

76° /56°
5%
Partly sunny and nice

RealFeel®82°

RealFeel Shade™75°

Max UV Index6.0 (High)

WindN 6 mph

Sat 9/5

75° /57°
4%
Sun and some clouds

RealFeel®79°

RealFeel Shade™73°

Max UV Index6.0 (High)

WindW 2 mph

Sun 9/6

75° /58°
9%
Sun and some clouds

RealFeel®78°

RealFeel Shade™75°

Max UV Index6.0 (High)

WindW 7 mph

Mon 9/7

77° /56°
55%
Partly sunny with a stray shower

RealFeel®80°

RealFeel Shade™76°

Max UV Index6.0 (High)

WindN 4 mph

Total Hours of Precipitation1.5

Total Hours of Rain1.5

Tue 9/8

76° /57°
19%
Variable cloudiness

RealFeel®76°

RealFeel Shade™75°

Max UV Index3.0 (Moderate)

WindSSW 8 mph

Wed 9/9

73° /55°
55%
Mostly cloudy with a little rain

RealFeel®74°

RealFeel Shade™72°

Max UV Index3.0 (Moderate)

WindW 8 mph

Total Hours of Precipitation2

Total Hours of Rain2

Thu 9/10

71° /53°
57%
A little rain in the morning; otherwise, clouds giving way to sun

RealFeel®69°

RealFeel Shade™67°

Max UV Index5.0 (Moderate)

WindWNW 15 mph

Total Hours of Precipitation1

Total Hours of Rain1

Fri 9/11

70° /49°
25%
Clouds and sun

RealFeel®72°

RealFeel Shade™71°

Max UV Index3.0 (Moderate)

WindW 1 mph

Sat 9/12

72° /54°
20%
Partly sunny

RealFeel®74°

RealFeel Shade™70°

Max UV Index4.0 (Moderate)

WindSW 4 mph

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Hurricane

Dolly to drench northern Caribbean, raise flood risk

5 hours ago

Severe Weather

Illinois sets US state record for most tornadoes in a year

1 day ago

Hurricane

Dolly could regroup as US tropical threats unfold as Labor Day nears

3 hours ago

Weather News

What caused the Nepal flood wave? Here’s what we know

2 days ago

Weather Forecasts

Heat dome to bounce back in Mississippi Valley, East as West cools

2 hours ago

More Stories

Featured Stories

Astronomy

NASA’s Roman Space Telescope set to launch Sunday

1 day ago

Weather News

Hummingbirds are migrating south. This map shows when they will leave

2 days ago

Weather News

Amazon rivers falling faster as El Niño intensifies

1 day ago

Health

As a measles outbreak escalates in Pennsylvania’s Amish Country

1 day ago

Climate

Global ocean heat breaks record months after its usual peak

3 days ago

World North America Canada Ontario St. Jacobs

Weather Near St. Jacobs:

  • Brampton, Ontario
  • Mississauga Valley, Ontario
  • Toronto, Ontario
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect Personal Weather Stations
Apps & Downloads
iPhone App Android App See all Apps & Downloads
Subscription Services
AccuWeather Premium AccuWeather Professional
More
AccuWeather Ready Business Health Hurricane Leisure and Recreation Severe Weather Space and Astronomy Sports Travel Weather News Winter Center
© 2026 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved.
Terms of Use | Privacy Policy | Cookie Policy | About Your Privacy Do Not Sell or Share My Personal Information | Data Sources

...

...

...