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

Waterdown, Ontario

58°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Waterdown

Ontario

58°
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
Waterdown, 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 28 - September 11

Fri 8/28

72° /55°
1%
Less humid with clouds giving way to some sun

RealFeel®77°

RealFeel Shade™70°

Max UV Index6.0 (High)

WindNE 6 mph

Sat 8/29

78° /62°
25%
Nice with sun and clouds

RealFeel®80°

RealFeel Shade™75°

Max UV Index6.0 (High)

WindSW 9 mph

Sun 8/30

76° /65°
25%
Cloudy

RealFeel®75°

RealFeel Shade™73°

Max UV Index2.0 (Low)

WindWSW 8 mph

Mon 8/31

77° /67°
60%
Occasional rain and a thunderstorm in the morning; otherwise, mostly cloudy and humid

RealFeel®82°

RealFeel Shade™77°

Max UV Index4.0 (Moderate)

WindS 6 mph

Total Hours of Precipitation1

Total Hours of Rain1

Tue 9/1

82° /64°
86%
Mostly cloudy and humid; a thunderstorm in parts of the area in the morning followed by a couple of showers in the afternoon

RealFeel®88°

RealFeel Shade™85°

Max UV Index3.0 (Moderate)

WindWSW 9 mph

Total Hours of Precipitation2.5

Total Hours of Rain2.5

Wed 9/2

81° /61°
25%
Humid with intervals of clouds and sun

RealFeel®90°

RealFeel Shade™83°

Max UV Index5.0 (Moderate)

WindWNW 7 mph

Thu 9/3

77° /60°
1%
Less humid with more sunshine than clouds

RealFeel®80°

RealFeel Shade™76°

Max UV Index6.0 (High)

WindWNW 7 mph

Fri 9/4

75° /59°
2%
Mostly cloudy

RealFeel®73°

RealFeel Shade™73°

Max UV Index4.0 (Moderate)

WindNNW 7 mph

Sat 9/5

73° /58°
6%
Sun and some clouds

RealFeel®79°

RealFeel Shade™72°

Max UV Index5.0 (Moderate)

WindSW 4 mph

Sun 9/6

73° /60°
14%
Peeks of sunshine

RealFeel®77°

RealFeel Shade™76°

Max UV Index4.0 (Moderate)

WindESE 5 mph

Mon 9/7

74° /58°
65%
A couple of morning thunderstorms; otherwise, variable cloudiness

RealFeel®77°

RealFeel Shade™76°

Max UV Index4.0 (Moderate)

WindW 5 mph

Total Hours of Precipitation1

Total Hours of Rain1

Tue 9/8

74° /60°
1%
Plenty of sunshine

RealFeel®82°

RealFeel Shade™77°

Max UV Index5.0 (Moderate)

WindW 4 mph

Wed 9/9

76° /61°
25%
Humid with sun and clouds

RealFeel®77°

RealFeel Shade™76°

Max UV Index3.0 (Moderate)

WindNW 8 mph

Thu 9/10

75° /52°
10%
Mostly sunny and less humid

RealFeel®78°

RealFeel Shade™73°

Max UV Index5.0 (Moderate)

WindNNW 6 mph

Fri 9/11

72° /56°
20%
Sunshine and a few clouds

RealFeel®77°

RealFeel Shade™70°

Max UV Index5.0 (Moderate)

WindNNE 1 mph

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Hurricane

Tropical Storm Dolly forms in Atlantic, tracking toward Caribbean

12 minutes ago

Weather Forecasts

Fall foliage forecast 2026: Where to expect the best color in the US

1 day ago

Astronomy

September nights bring planets, longer nights and the Harvest Moon

17 hours ago

Weather News

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

19 hours ago

Weather Forecasts

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

1 hour ago

 More Stories

Featured Stories

Severe Weather

Hundreds missing after massive flood wave on China-Nepal border

20 hours ago

Weather News

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

16 hours ago

Weather News

Ross Fire doubles to 80,000 acres, destroys structures

17 hours ago

Climate

Global ocean heat breaks record months after its usual peak

1 day ago

Astronomy

NASA’s Roman Space Telescope set to launch Sunday

1 day ago
World North America Canada Ontario Waterdown

Weather Near Waterdown:

  • Hamilton, 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

...

...

...