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

3 PM

60°

RealFeel® 62°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

0%

Mostly sunny

RealFeel Shade™57°

WindWSW 8 mph

Air QualityExcellent

Max UV Index3.0 (Moderate)

Wind Gusts14 mph

Humidity48%

Indoor Humidity36% (Slightly Dry)

Dew Point40° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover13%

Visibility10 mi

Cloud Ceiling33400 ft

4 PM

60°

RealFeel® 60°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

0%

Mostly sunny

RealFeel Shade™57°

WindSW 9 mph

Air QualityFair

Max UV Index2.2 (Low)

Wind Gusts16 mph

Humidity50%

Indoor Humidity38% (Ideal Humidity)

Dew Point42° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover29%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

59°

RealFeel® 57°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

0%

Partly sunny

RealFeel Shade™55°

WindSSW 10 mph

Air QualityFair

Max UV Index1.4 (Low)

Wind Gusts18 mph

Humidity52%

Indoor Humidity38% (Ideal Humidity)

Dew Point42° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover43%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

57°

RealFeel® 53°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

0%

Partly sunny

RealFeel Shade™53°

WindSSW 10 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts17 mph

Humidity62%

Indoor Humidity42% (Ideal Humidity)

Dew Point44° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover32%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

55°

RealFeel® 50°

Chilly

RealFeel Guide

Chilly

40° to 52°

Jacket or sweater is recommended.

0%

Mostly clear

WindSSW 10 mph

Air QualityFair

Wind Gusts17 mph

Humidity70%

Indoor Humidity44% (Ideal Humidity)

Dew Point46° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover26%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

54°

RealFeel® 49°

Chilly

RealFeel Guide

Chilly

40° to 52°

Jacket or sweater is recommended.

0%

Mostly clear

WindSSW 9 mph

Air QualityFair

Wind Gusts17 mph

Humidity76%

Indoor Humidity46% (Ideal Humidity)

Dew Point46° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

52°

RealFeel® 47°

Chilly

RealFeel Guide

Chilly

40° to 52°

Jacket or sweater is recommended.

0%

Mostly clear

WindS 9 mph

Air QualityFair

Wind Gusts17 mph

Humidity83%

Indoor Humidity46% (Ideal Humidity)

Dew Point47° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

54°

RealFeel® 49°

Chilly

RealFeel Guide

Chilly

40° to 52°

Jacket or sweater is recommended.

0%

Mostly clear

WindS 9 mph

Air QualityFair

Wind Gusts16 mph

Humidity78%

Indoor Humidity47% (Ideal Humidity)

Dew Point47° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

54°

RealFeel® 50°

Chilly

RealFeel Guide

Chilly

40° to 52°

Jacket or sweater is recommended.

0%

Mostly clear

WindS 8 mph

Air QualityFair

Wind Gusts16 mph

Humidity79%

Indoor Humidity47% (Ideal Humidity)

Dew Point47° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover11%

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 60° with a RealFeel® of 62°, mostly sunny with a 0% 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

Thursday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Hurricane

Gulf storm forecast to be Atlantic's 1st hurricane before striking US

1 hour ago

Weather Forecasts

Summerlike heat grips L.A., San Diego: When will it end?

4 hours ago

Weather News

October heat strains Southern California grid as thousands lose power

23 hours ago

Weather Forecasts

Coldest air of season to bring freeze risk to Northeast

5 hours ago

Hurricane

Hurricane Nolo crosses International Date Line, becomes Typhoon Nolo

1 day ago

Featured Stories

Astronomy

Jupiter disappeared behind the moon in an eclipse-like event

3 hours ago

Travel

Sycamore Gap tree sprouts new life 3 years after vandals cut it down

1 day ago

Weather News

Yosemite’s Dome Fire identified as human-caused

1 day ago

Weather News

New statue unveiled to honor Jackie, Big Bear’s beloved bald eagle

5 days ago

Weather News

The hidden costs behind your higher electric bill

1 day 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

...

...

...