For Business
|
Warnings
Data Suite
Forensics
Advertising
Superior Accuracy™

Alliston, Ontario

Location

Location News Videos

Use Current Location

Recent

Alliston

Ontario

No results found.

Try searching for a city, zip code or point of interest.

Create Your Account Unlock extended daily and hourly forecasts — all with your free account.

Have an account already? Log In

settings

Alliston, 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

Hourly

10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

5 PM

70°

RealFeel® 70°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

7%

Intermittent clouds

RealFeel Shade™67°

WindNNW 8 mph

Air QualityExcellent

Max UV Index1.9 (Low)

Wind Gusts18 mph

Humidity62%

Indoor Humidity62% (Slightly Humid)

Dew Point57° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

68°

RealFeel® 68°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

7%

Mostly sunny

RealFeel Shade™66°

WindNNW 8 mph

Air QualityExcellent

Max UV Index1.3 (Low)

Wind Gusts17 mph

Humidity74%

Indoor Humidity74% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover24%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

67°

RealFeel® 65°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

5%

Mostly sunny

RealFeel Shade™65°

WindNNW 7 mph

Air QualityExcellent

Max UV Index0.3 (Low)

Wind Gusts16 mph

Humidity78%

Indoor Humidity75% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover18%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

63°

RealFeel® 62°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

0%

Mostly clear

WindNNW 6 mph

Air QualityExcellent

Wind Gusts15 mph

Humidity89%

Indoor Humidity76% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

61°

RealFeel® 60°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

0%

Mostly clear

WindNNW 6 mph

Air QualityExcellent

Wind Gusts13 mph

Humidity97%

Indoor Humidity76% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

60°

RealFeel® 59°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

0%

Mostly clear

WindN 6 mph

Air QualityExcellent

Wind Gusts12 mph

Humidity99%

Indoor Humidity74% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

59°

RealFeel® 58°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

0%

Mostly clear

WindN 5 mph

Air QualityExcellent

Wind Gusts10 mph

Humidity100%

Indoor Humidity72% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Alliston

AccuWeather's hourly forecast for Alliston provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 70° with a RealFeel® of 70°, intermittent clouds with a 7% 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.

Further Ahead

Tomorrow

Monday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Hurricane

Powerful Hurricane Lowell to turn toward Hawaii with impacts

2 hours ago

Severe Weather

Detroit’s first tornado since 1997 confirmed after severe storms

1 day ago

Hurricane

Hawaii braces for Hurricane Lowell while still recovering from Lala

1 day ago

Weather Forecasts

Tropical downpours to drench Los Angeles, Las Vegas into Labor Day

7 hours ago

Severe Weather

Severe thunderstorms threaten Labor Day weekend travel across U.S.

52 minutes ago

Featured Stories

Weather News

Staten Island man walks away after lightning strike caught on camera

2 days ago

Hurricane

Has a hurricane ever hit California?

2 days ago

Weather News

U.N. warns very strong El Niño means more floods, drought, extreme hea...

1 day ago

Health

Chicago confirms first West Nile virus death of 2026

2 days ago

Astronomy

Labor Day brings best planetary alignment of September

2 days ago

World North America Canada Ontario Alliston

Weather Near Alliston:

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

...

...

...