For Business
|
Warnings
Data Suite
Forensics
Advertising
Superior Accuracy™

Severe thunderstorms set to return to the Midwest. See the forecast.

El Niño is officially underway. Here's what it means for the weather into 2027.

Rialto, CA

Location

Location News Videos

Use Current Location

Recent

Rialto

California

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

Rialto, CA 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

91°

RealFeel® 92°

Hot

RealFeel Guide

Hot

90° to 100°

Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.

0%

Sunny

RealFeel Shade™88°

Heat Index89°

WindWSW 12 mph

Air QualityPoor

Max UV Index5.1 (Moderate)

Wind Gusts18 mph

Humidity28%

Indoor Humidity28% (Ideal Humidity)

Dew Point54° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover7%

Visibility10 mi

Cloud Ceiling33300 ft

5 PM

91°

RealFeel® 91°

Hot

RealFeel Guide

Hot

90° to 100°

Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.

0%

Mostly sunny

RealFeel Shade™88°

Heat Index89°

WindSW 12 mph

Air QualityPoor

Max UV Index3.5 (Moderate)

Wind Gusts18 mph

Humidity29%

Indoor Humidity29% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

89°

RealFeel® 88°

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.

0%

Mostly sunny

RealFeel Shade™86°

Heat Index87°

WindSW 10 mph

Air QualityPoor

Max UV Index2.1 (Low)

Wind Gusts15 mph

Humidity31%

Indoor Humidity31% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

88°

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.

0%

Mostly sunny

RealFeel Shade™85°

Heat Index86°

WindSW 9 mph

Air QualityPoor

Max UV Index1.1 (Low)

Wind Gusts13 mph

Humidity32%

Indoor Humidity32% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover11%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

85°

RealFeel® 82°

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.

0%

Sunny

RealFeel Shade™82°

Heat Index84°

WindSW 8 mph

Air QualityPoor

Max UV Index0.1 (Low)

Wind Gusts9 mph

Humidity36%

Indoor Humidity36% (Ideal Humidity)

Dew Point55° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

82°

RealFeel® 79°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Clear

Heat Index81°

WindSW 8 mph

Air QualityFair

Wind Gusts8 mph

Humidity40%

Indoor Humidity40% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

79°

RealFeel® 77°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Clear

WindSW 7 mph

Air QualityFair

Wind Gusts7 mph

Humidity45%

Indoor Humidity45% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover1%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

76°

RealFeel® 74°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Clear

WindSW 6 mph

Air QualityFair

Wind Gusts6 mph

Humidity50%

Indoor Humidity50% (Slightly Humid)

Dew Point56° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover0%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Rialto

AccuWeather's hourly forecast for Rialto provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 91° with a RealFeel® of 92°, 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

Tuesday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Severe Weather

Severe thunderstorm risk to return to the storm-weary Midwest

3 hours ago

Climate

El Niño is here, and it’s developing faster than many typically do

3 days ago

Hurricane

South faces days of flooding rain as Gulf remains tropical focus

3 hours ago

Live: World Cup 2026 weather updates

LATEST ENTRY

Severe weather temporarily suspends Fan Festival in Houston

4 hours ago

Weather Forecasts

First heat wave of season to build in Northwest into Monday

5 hours ago

Featured Stories

Hurricane

Past El Niño Atlantic hurricane seasons still had devastating storms

4 days ago

Travel

Deer are already using a wildlife bridge over a crash-prone highway

4 days ago

Astronomy

Meet the Artemis III astronauts flying in 2027

5 days ago

Weather News

Gender reveal sparked wildfire. Who’s held accountable is unusual

5 days ago

Astronomy

NASA's X-59 breaks sound barrier for the first time

5 days ago

World North America United States California Rialto

Weather Near Rialto:

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 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

...

...

...