For Business
|
Warnings
Data Suite
Forensics
Advertising
Superior Accuracy™

Grimsby, Ontario

Location

Location News Videos

Use Current Location

Recent

Grimsby

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

Grimsby, 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

4 PM

66°

RealFeel® 60°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

71%

Thunderstorms

Special Weather Statement

1:42 PM Sunday - 11:00 PM Sunday

RealFeel Shade™60°

WindW 15 mph

Air QualityExcellent

Max UV Index1.0 (Low)

Wind Gusts29 mph

Humidity85%

Indoor Humidity80% (Slightly Humid)

Dew Point62° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Rain0.03 in

Visibility10 mi

Cloud Ceiling9000 ft

5 PM

66°

RealFeel® 65°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

40%

Partly sunny

Special Weather Statement

1:42 PM Sunday - 11:00 PM Sunday

RealFeel Shade™62°

WindW 15 mph

Air QualityExcellent

Max UV Index2.4 (Low)

Wind Gusts29 mph

Humidity81%

Indoor Humidity76% (Slightly Humid)

Dew Point60° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

66°

RealFeel® 64°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

34%

Partly sunny

Special Weather Statement

1:42 PM Sunday - 11:00 PM Sunday

RealFeel Shade™62°

WindW 14 mph

Air QualityExcellent

Max UV Index1.5 (Low)

Wind Gusts28 mph

Humidity77%

Indoor Humidity72% (Slightly Humid)

Dew Point59° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

66°

RealFeel® 63°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

27%

Partly sunny

Special Weather Statement

1:42 PM Sunday - 11:00 PM Sunday

RealFeel Shade™63°

WindW 13 mph

Air QualityExcellent

Max UV Index0.6 (Low)

Wind Gusts24 mph

Humidity74%

Indoor Humidity69% (Slightly Humid)

Dew Point58° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover45%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

66°

RealFeel® 63°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

14%

Mostly sunny

Special Weather Statement

1:42 PM Sunday - 11:00 PM Sunday

RealFeel Shade™63°

WindW 10 mph

Air QualityExcellent

Max UV Index0.0 (Low)

Wind Gusts22 mph

Humidity71%

Indoor Humidity66% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

63°

RealFeel® 60°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

14%

Mostly clear

Special Weather Statement

1:42 PM Sunday - 11:00 PM Sunday

WindW 9 mph

Air QualityExcellent

Wind Gusts22 mph

Humidity77%

Indoor Humidity66% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

62°

RealFeel® 59°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

14%

Mostly clear

Special Weather Statement

1:42 PM Sunday - 11:00 PM Sunday

WindW 8 mph

Air QualityExcellent

Wind Gusts21 mph

Humidity81%

Indoor Humidity65% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

61°

RealFeel® 58°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

14%

Mostly clear

WindWSW 8 mph

Air QualityExcellent

Wind Gusts20 mph

Humidity83%

Indoor Humidity64% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Grimsby

AccuWeather's hourly forecast for Grimsby provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 66° with a RealFeel® of 60°, thunderstorms 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.

Further Ahead

Tomorrow

Tuesday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Hurricane

Tropical Storm Moke to sideswipe Hawaii with heavy rain, flood risk

2 hours ago

Hurricane

Recovering Hawaii braces for Moke, second tropical threat in a week

4 hours ago

Severe Weather

Storms to bring flooding, damaging winds from Rockies to Northeast

1 hour ago

Weather Forecasts

Taste of fall coming for Midwest, Northeast as Canadian air arrives

2 hours ago

Severe Weather

Rare tornadoes struck Delaware and Long Island on Thursday

2 days ago

Featured Stories

Recreation

Visitor dies in Death Valley after becoming stranded in 116-degree hea...

1 day ago

Weather News

Lala leaves Hawaii communities buried in mud, communication cut off

4 days ago

Severe Weather

Lightning kills man in Virginia amid more than 500 nearby strikes

2 days ago

Recreation

250-pound black bear dies after becoming trapped in Colorado car

4 days ago

Climate

Lake Powell sinks to record low as Colorado River crisis deepens

5 days ago

World North America Canada Ontario Grimsby

Weather Near Grimsby:

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

...

...

...