Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Warming atmosphere fueling heavier U.S. rainfall and rising flood risk. Get the details Chevron right
Gabrielle may become next hurricane as Atlantic heats up. Get the latest. Chevron right

Ontario, CA

67°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Ontario

California

67°
No results found.
Try searching for a city, zip code or point of interest.
settings
Ontario, CA Weather
Today WinterCast Local {stormName} Tracker Hourly Daily 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 Daily Radar MinuteCast® Monthly Air Quality Health & Activities
Sunday, September 21

Day

9/21
86°Hi
RealFeel® 86°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
RealFeel Shade™ 83°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
Times of clouds and sun

Max UV Index5.0 (Moderate)

AccuLumen Brightness Index™6 (Medium)

WindSSW 7 mph

Wind Gusts10 mph

Probability of Precipitation6%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover69%

Morning

Afternoon

Night

9/21
62°Lo
RealFeel® 63°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
Mostly cloudy; a shower cannot be ruled out

WindS 4 mph

Wind Gusts7 mph

Probability of Precipitation3%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover77%

Evening

Overnight

Sun & Moon

12 hrs 11 mins
Rise 6:38 AM
Set 6:49 PM
New Moon
Rise 6:29 AM
Set 6:46 PM

Temperature History

9/21
High
Low
Forecast
86°
62°
Average
87°
60°
Last Year
79°
56°

Further Ahead

Hourly

Daily

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather News

AccuWeather study: Flood risk rising as US storms grow more intense

22 hours ago

Weather News

Mudslides damage homes, bury roads and cars in Southern California

19 hours ago

Hurricane

Gabrielle may become hurricane, 2 more areas being watched

1 hour ago

Weather Forecasts

Where’s the rain? Dry pattern grips the East

13 minutes ago

Hurricane

Mario's ghost sets off flash flooding in Southern California, Southwes...

14 hours ago

 More Stories

Featured Stories

Climate

The ‘blob’ is back — and it stretches across the entire North Pacific

19 hours ago

Astronomy

Saturn to glow brighter than usual this weekend as it reaches oppositi...

19 hours ago
Live Blog

Does this radar loop show insects or birds?

LATEST ENTRY

Expert debunks claim about weird weather radar

3 days ago

Health

The US is tracking 14 potential rabies outbreaks in 20 states.

1 day ago

Weather News

Mount St. Helens stirring up leftover ash 45 years after ‘the big one’

2 days ago
World North America United States California Ontario

Weather Near Ontario:

  • Anaheim, CA
  • Long Beach, CA
  • Los Angeles, CA
Company
Proven Superior Accuracy™ About AccuWeather Digital Advertising Careers Press Contact Us
Products & Services
For Business For Partners For Advertising AccuWeather APIs AccuWeather Connect RealFeel® and RealFeel Shade™ 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 RealFeel® and RealFeel Shade™ 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
© 2025 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

...

...

...