Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Atlantic hurricane season is here, but when will the 1st storm form? Get the forecast Chevron right

Mt. Vernon, IL

81°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Mt. Vernon

Illinois

81°
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.
Let's Go Chevron right
Have an account already? Log In
settings
Help
Mt. 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
Today

Hourly

 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

View hourly forecasts 10-days ahead

Activate Your Premium+ Subscription

Chevron right

4 PM

82°
RealFeel® 90°
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.
LEARN MORE
rain drop 20%
Chevron down
Mostly sunny

RealFeel Shade™83°

Heat Index85°

WindWNW 6 mph

Air QualityFair

Max UV Index4.8 (Moderate)

Wind Gusts8 mph

Humidity64%

Indoor Humidity64% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™9 (Very Bright)

Cloud Cover27%

Visibility10 mi

Cloud Ceiling34000 ft

5 PM

82°
RealFeel® 90°
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.
LEARN MORE
rain drop 20%
Chevron down
Intermittent clouds

RealFeel Shade™86°

Heat Index86°

WindNE 5 mph

Air QualityFair

Max UV Index2.1 (Low)

Wind Gusts8 mph

Humidity68%

Indoor Humidity68% (Very Humid)

Dew Point70° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover54%

Visibility10 mi

Cloud Ceiling7100 ft

6 PM

80°
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
rain drop 20%
Chevron down
Intermittent clouds

RealFeel Shade™86°

Heat Index83°

WindNE 5 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts7 mph

Humidity78%

Indoor Humidity78% (Extremely Humid)

Dew Point72° F

AccuLumen Brightness Index™6 (Medium)

Cloud Cover71%

Visibility10 mi

Cloud Ceiling2000 ft

7 PM

77°
RealFeel® 81°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 13%
Chevron down
Mostly cloudy

RealFeel Shade™81°

WindNE 6 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts7 mph

Humidity82%

Indoor Humidity82% (Very Humid)

Dew Point71° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover76%

Visibility10 mi

Cloud Ceiling7100 ft

8 PM

73°
RealFeel® 76°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™76°

WindNE 4 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts5 mph

Humidity86%

Indoor Humidity86% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

69°
RealFeel® 71°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindNE 4 mph

Air QualityFair

Wind Gusts5 mph

Humidity95%

Indoor Humidity95% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

67°
RealFeel® 68°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindNE 4 mph

Air QualityFair

Wind Gusts5 mph

Humidity95%

Indoor Humidity92% (Humid)

Dew Point66° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

65°
RealFeel® 65°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindENE 5 mph

Air QualityFair

Wind Gusts5 mph

Humidity100%

Indoor Humidity91% (Humid)

Dew Point65° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

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 82° with a RealFeel® of 90°, mostly sunny with a 20% 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

Wednesday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Severe Weather

Plains, Mississippi Valley brace for multiple days of severe storms

38 minutes ago

Weather News

Hawaii volcano breaks eruption record as lava bursts from Kilauea

55 minutes ago

Hurricane

Eastern Pacific poised for first storms of 2026 hurricane season

3 hours ago

Weather Forecasts

Dry spell persists across mid-Atlantic, ahead of late-week warmup

1 hour ago

Astronomy

A 'Strawberry Moon,' three-planet meetup headline June's night sky

2 hours ago

 More Stories

Featured Stories

Astronomy

Daytime meteor startles New England with loud boom

4 hours ago

Astronomy

Satellite images show damage after Blue Origin rocket explosion

2 hours ago

Recreation

Yosemite crowds offer first look at summer travel without reservations

3 days ago

Recreation

Venomous Portuguese man o’ war spotted on Myrtle Beach

3 days ago

Weather News

Tiny blue octopus identified as new species

3 days ago
World North America United States Illinois Mt. Vernon

Weather Near Mt. 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

...

...

...