For Business
|
Warnings
Data Suite
Forensics
Advertising
Superior Accuracy™

Sarnia, Ontario

Location

Location News Videos

Use Current Location

Recent

Sarnia

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

Sarnia, 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

1 PM

62°

RealFeel® 59°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

51%

Showers

RealFeel Shade™55°

WindSSW 16 mph

Air QualityFair

Max UV Index4.2 (Moderate)

Wind Gusts21 mph

Humidity66%

Indoor Humidity54% (Ideal Humidity)

Dew Point51° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover80%

Rain0.01 in

Visibility10 mi

Cloud Ceiling14700 ft

2 PM

63°

RealFeel® 58°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

59%

Thunderstorms

RealFeel Shade™55°

WindSW 16 mph

Air QualityFair

Max UV Index2.3 (Low)

Wind Gusts23 mph

Humidity71%

Indoor Humidity60% (Ideal Humidity)

Dew Point54° F

AccuLumen Brightness Index™3 (Dull)

Cloud Cover85%

Rain0.10 in

Visibility5 mi

Cloud Ceiling4000 ft

3 PM

64°

RealFeel® 63°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

49%

Intermittent clouds

RealFeel Shade™59°

WindSW 16 mph

Air QualityFair

Max UV Index3.8 (Moderate)

Wind Gusts22 mph

Humidity66%

Indoor Humidity57% (Ideal Humidity)

Dew Point52° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling14600 ft

4 PM

65°

RealFeel® 63°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

49%

Intermittent clouds

RealFeel Shade™60°

WindWSW 16 mph

Air QualityFair

Max UV Index2.7 (Moderate)

Wind Gusts21 mph

Humidity60%

Indoor Humidity54% (Ideal Humidity)

Dew Point51° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling14600 ft

5 PM

66°

RealFeel® 64°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

49%

Intermittent clouds

RealFeel Shade™62°

WindWSW 16 mph

Air QualityFair

Max UV Index1.9 (Low)

Wind Gusts21 mph

Humidity52%

Indoor Humidity48% (Ideal Humidity)

Dew Point48° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Visibility10 mi

Cloud Ceiling14600 ft

6 PM

64°

RealFeel® 58°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

66%

Mostly cloudy w/ t-storms

RealFeel Shade™58°

WindWSW 15 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts17 mph

Humidity65%

Indoor Humidity56% (Ideal Humidity)

Dew Point52° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover70%

Rain0.10 in

Visibility5 mi

Cloud Ceiling3900 ft

7 PM

61°

RealFeel® 58°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

49%

Intermittent clouds

RealFeel Shade™58°

WindW 14 mph

Air QualityFair

Max UV Index0.6 (Low)

Wind Gusts16 mph

Humidity62%

Indoor Humidity49% (Ideal Humidity)

Dew Point48° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover67%

Visibility10 mi

Cloud Ceiling14600 ft

8 PM

59°

RealFeel® 54°

Cool

RealFeel Guide

Cool

53° to 62°

Light jacket or sweater may be appropriate.

0%

Intermittent clouds

RealFeel Shade™54°

WindW 12 mph

Air QualityFair

Max UV Index0.1 (Low)

Wind Gusts15 mph

Humidity55%

Indoor Humidity40% (Ideal Humidity)

Dew Point43° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover65%

Visibility10 mi

Cloud Ceiling14700 ft

9 PM

56°

RealFeel® 51°

Chilly

RealFeel Guide

Chilly

40° to 52°

Jacket or sweater is recommended.

0%

Intermittent clouds

WindW 10 mph

Air QualityFair

Wind Gusts12 mph

Humidity60%

Indoor Humidity39% (Ideal Humidity)

Dew Point42° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover74%

Visibility10 mi

Cloud Ceiling14700 ft

10 PM

53°

RealFeel® 49°

Chilly

RealFeel Guide

Chilly

40° to 52°

Jacket or sweater is recommended.

0%

Mostly cloudy

WindWNW 8 mph

Air QualityFair

Wind Gusts9 mph

Humidity64%

Indoor Humidity37% (Ideal Humidity)

Dew Point41° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover86%

Visibility10 mi

Cloud Ceiling14700 ft

11 PM

50°

RealFeel® 47°

Chilly

RealFeel Guide

Chilly

40° to 52°

Jacket or sweater is recommended.

0%

Cloudy

WindNW 7 mph

Air QualityFair

Wind Gusts8 mph

Humidity69%

Indoor Humidity36% (Slightly Dry)

Dew Point40° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling14700 ft

Hourly Weather Forecast for Sarnia

AccuWeather's hourly forecast for Sarnia provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 62° with a RealFeel® of 59°, showers with a 51% 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

Severe Weather

Severe t-storms to focus across parts of the Plains, Gulf Coast

1 hour ago

Severe Weather

EF3 tornado damages hundreds of homes, injures 17 in Mississippi

14 hours ago

Weather Forecasts

Cool weather, frost risk to last through mid-May in Midwest, Northeast

18 minutes ago

Weather News

3 hikers killed as Indonesia volcano spews ash 6 miles high

23 hours ago

Severe Weather

How one of the internet's most famous weather videos was captured

2 days ago

Featured Stories

Weather News

83 days of sunlight: Alaska town won’t see another sunset until August

1 day ago

Recreation

Rabid beaver attacks family fishing at Lake Henry in New Jersey

23 hours ago

Weather News

Meet the first bald eagle born in Chicago in over 100 years

2 days ago

Weather News

Teen 'lucky' to survive electrocution, 60-foot fall into brush fire

2 days ago

Weather News

Tow truck driver goes viral after rescuing moose stuck in ice

2 days ago

World North America Canada Ontario Sarnia

Weather Near Sarnia:

Detroit, MI
London, Ontario
Windsor, 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

...

...

...