For Business
|
Warnings
Data Suite
Forensics
Advertising
Superior Accuracy™

El Niño could reshape the rest of the Atlantic hurricane season. Click to find out how.

Severe storms roll from Plains to Appalachians. Click for timing.

Mount Vernon, IL

Location

Location News Videos

Use Current Location

Recent

Mount Vernon

Illinois

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

Mount Vernon, IL 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

12 PM

83°

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%

Intermittent clouds

RealFeel Shade™82°

Heat Index85°

WindESE 7 mph

Air QualityFair

Max UV Index7.8 (Very High)

Wind Gusts9 mph

Humidity53%

Indoor Humidity53% (Humid)

Dew Point65° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover56%

Visibility10 mi

Cloud Ceiling20000 ft

1 PM

85°

RealFeel® 94°

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%

Intermittent clouds

RealFeel Shade™84°

Heat Index86°

WindESE 7 mph

Air QualityFair

Max UV Index8.7 (Very High)

Wind Gusts10 mph

Humidity50%

Indoor Humidity50% (Humid)

Dew Point64° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover56%

Visibility10 mi

Cloud Ceiling20000 ft

2 PM

86°

RealFeel® 95°

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%

Intermittent clouds

RealFeel Shade™85°

Heat Index87°

WindESE 6 mph

Air QualityFair

Max UV Index8.2 (Very High)

Wind Gusts9 mph

Humidity48%

Indoor Humidity48% (Humid)

Dew Point64° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover52%

Visibility10 mi

Cloud Ceiling20000 ft

3 PM

85°

RealFeel® 93°

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%

Partly sunny

RealFeel Shade™85°

Heat Index87°

WindE 6 mph

Air QualityFair

Max UV Index6.8 (High)

Wind Gusts7 mph

Humidity49%

Indoor Humidity49% (Humid)

Dew Point64° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

4 PM

84°

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%

Partly sunny

RealFeel Shade™84°

Heat Index86°

WindE 6 mph

Air QualityFair

Max UV Index4.6 (Moderate)

Wind Gusts7 mph

Humidity52%

Indoor Humidity52% (Humid)

Dew Point65° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

84°

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%

Partly sunny

RealFeel Shade™83°

Heat Index85°

WindE 6 mph

Air QualityFair

Max UV Index3.1 (Moderate)

Wind Gusts7 mph

Humidity54%

Indoor Humidity54% (Humid)

Dew Point65° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

82°

RealFeel® 85°

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%

Partly sunny

RealFeel Shade™82°

Heat Index84°

WindE 6 mph

Air QualityFair

Max UV Index1.9 (Low)

Wind Gusts7 mph

Humidity57%

Indoor Humidity57% (Humid)

Dew Point66° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

80°

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%

Partly sunny

RealFeel Shade™82°

Heat Index82°

WindE 6 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts6 mph

Humidity62%

Indoor Humidity62% (Humid)

Dew Point66° F

AccuLumen Brightness Index™5 (Medium)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

77°

RealFeel® 77°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Partly sunny

RealFeel Shade™77°

WindE 5 mph

Air QualityFair

Max UV Index0.0 (Low)

Wind Gusts5 mph

Humidity71%

Indoor Humidity71% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

73°

RealFeel® 74°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Partly cloudy

WindE 4 mph

Air QualityFair

Wind Gusts5 mph

Humidity80%

Indoor Humidity80% (Very Humid)

Dew Point67° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

70°

RealFeel® 71°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Partly cloudy

WindE 4 mph

Air QualityFair

Wind Gusts5 mph

Humidity87%

Indoor Humidity87% (Humid)

Dew Point66° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

68°

RealFeel® 68°

Pleasant

RealFeel Guide

Pleasant

63° to 81°

Most consider this temperature range ideal.

0%

Partly cloudy

WindE 4 mph

Air QualityFair

Wind Gusts4 mph

Humidity93%

Indoor Humidity91% (Humid)

Dew Point65° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Mount Vernon

AccuWeather's hourly forecast for Mount Vernon provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 83° with a RealFeel® of 92°, intermittent clouds 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

Saturday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Severe Weather

Severe storms to march from Plains to Appalachians into Sunday

58 minutes ago

Hurricane

Hurricane update: How El Niño could reshape the rest of the season

1 day ago

Weather News

Flash floods hit Colorado wildfire burn scar

1 hour ago

Severe Weather

Severe threat shifts west while Southeast heavy downpours continue

7 hours ago

Severe Weather

Wisconsin EF3 tornado leaves damage as severe storms cut power

1 day ago

Featured Stories

Weather Forecasts

Heat dome to impact California, Southwest into next week

5 hours ago

Astronomy

Buck Moon 2026: July's full moon rises around the world

23 hours ago

Weather News

Triple-digit heat fuels wildfires in France and Spain

20 hours ago

Climate

In record heat, a warming world has come to rely on China to stay cool

1 hour ago

Recreation

See it: Fisherman avoids close encounter with bison in Yellowstone

1 day ago

World North America United States Illinois Mount Vernon

Weather Near Mount Vernon:

Cape Girardeau, MO
Carbondale, IL
Paducah, KY

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

...

...

...