Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Artemis II updates: Astronauts make historic moon flyby. Click here to follow along. Chevron right
Rain will ease drought, but may spoil vacations in Florida this week. Click for info. Chevron right

Upper Alton, IL

39°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Upper Alton

Illinois

39°
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
Upper Alton, 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

9 AM

39°
RealFeel® 29°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 60%
Chevron down
Showers

RealFeel Shade™29°

WindENE 10 mph

Air QualityFair

Max UV Index0.5 (Low)

Wind Gusts15 mph

Humidity71%

Indoor Humidity39% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover100%

Rain0.02 in

Visibility10 mi

Cloud Ceiling3500 ft

10 AM

40°
RealFeel® 31°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 58%
Chevron down
Showers

RealFeel Shade™31°

WindE 12 mph

Air QualityFair

Max UV Index0.9 (Low)

Wind Gusts17 mph

Humidity66%

Indoor Humidity38% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover93%

Rain0.01 in

Visibility10 mi

Cloud Ceiling2800 ft

11 AM

43°
RealFeel® 35°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 52%
Chevron down
Showers

RealFeel Shade™33°

WindE 12 mph

Air QualityFair

Max UV Index1.3 (Low)

Wind Gusts17 mph

Humidity60%

Indoor Humidity38% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover93%

Rain0.02 in

Visibility6 mi

Cloud Ceiling4200 ft

12 PM

45°
RealFeel® 40°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 48%
Chevron down
Cloudy

RealFeel Shade™37°

WindE 12 mph

Air QualityFair

Max UV Index1.8 (Low)

Wind Gusts17 mph

Humidity54%

Indoor Humidity38% (Dry)

Dew Point29° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover96%

Visibility10 mi

Cloud Ceiling5600 ft

1 PM

47°
RealFeel® 44°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 33%
Chevron down
Cloudy

RealFeel Shade™41°

WindE 10 mph

Air QualityFair

Max UV Index2.0 (Low)

Wind Gusts16 mph

Humidity50%

Indoor Humidity38% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover99%

Visibility10 mi

Cloud Ceiling7100 ft

2 PM

50°
RealFeel® 46°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 12%
Chevron down
Cloudy

RealFeel Shade™44°

WindE 10 mph

Air QualityFair

Max UV Index1.8 (Low)

Wind Gusts17 mph

Humidity46%

Indoor Humidity39% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover98%

Visibility10 mi

Cloud Ceiling7100 ft

3 PM

52°
RealFeel® 49°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 12%
Chevron down
Cloudy

RealFeel Shade™46°

WindESE 10 mph

Air QualityFair

Max UV Index1.5 (Low)

Wind Gusts17 mph

Humidity45%

Indoor Humidity40% (Slightly Dry)

Dew Point31° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling7100 ft

4 PM

54°
RealFeel® 51°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 12%
Chevron down
Cloudy

RealFeel Shade™49°

WindESE 10 mph

Air QualityFair

Max UV Index1.3 (Low)

Wind Gusts17 mph

Humidity42%

Indoor Humidity40% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover90%

Visibility10 mi

Cloud Ceiling7100 ft

5 PM

53°
RealFeel® 50°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 12%
Chevron down
Mostly cloudy

RealFeel Shade™50°

WindESE 9 mph

Air QualityFair

Max UV Index1.0 (Low)

Wind Gusts18 mph

Humidity44%

Indoor Humidity40% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover84%

Visibility10 mi

Cloud Ceiling9500 ft

6 PM

53°
RealFeel® 49°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 12%
Chevron down
Mostly cloudy

RealFeel Shade™49°

WindESE 9 mph

Air QualityFair

Max UV Index0.7 (Low)

Wind Gusts18 mph

Humidity45%

Indoor Humidity40% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™4 (Dull)

Cloud Cover80%

Visibility10 mi

Cloud Ceiling11900 ft

7 PM

50°
RealFeel® 46°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 8%
Chevron down
Mostly cloudy

RealFeel Shade™46°

WindESE 8 mph

Air QualityFair

Max UV Index0.2 (Low)

Wind Gusts17 mph

Humidity49%

Indoor Humidity40% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™1 (Dark)

Cloud Cover81%

Visibility10 mi

Cloud Ceiling14400 ft

8 PM

49°
RealFeel® 44°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Cloudy

WindESE 8 mph

Air QualityFair

Wind Gusts16 mph

Humidity52%

Indoor Humidity40% (Slightly Dry)

Dew Point32° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling15800 ft

9 PM

46°
RealFeel® 41°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
rain drop 0%
Chevron down
Cloudy

WindESE 9 mph

Air QualityFair

Wind Gusts13 mph

Humidity55%

Indoor Humidity39% (Slightly Dry)

Dew Point31° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover96%

Visibility10 mi

Cloud Ceiling17300 ft

10 PM

44°
RealFeel® 38°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Cloudy

WindESE 9 mph

Air QualityFair

Wind Gusts12 mph

Humidity57%

Indoor Humidity39% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover98%

Visibility10 mi

Cloud Ceiling18700 ft

11 PM

44°
RealFeel® 38°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
rain drop 0%
Chevron down
Cloudy

WindESE 9 mph

Air QualityFair

Wind Gusts12 mph

Humidity58%

Indoor Humidity39% (Slightly Dry)

Dew Point30° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover95%

Visibility10 mi

Cloud Ceiling22500 ft

Hourly Weather Forecast for Upper Alton

AccuWeather's hourly forecast for Upper Alton provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 39° with a RealFeel® of 29° and a 60% chance of Showers. 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

Thursday

10-Day

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Weather Forecasts

Slow-moving rainstorm to douse Florida drought, wildfire risk

1 hour ago
Live Blog

Artemis II: Astronauts begin journey back to Earth after lunar flyby

LATEST ENTRY

First images from far side of the moon released

16 minutes ago

Winter Weather

Cold air returns with snow, freezes in Northeast after weekend warmth

1 hour ago

Severe Weather

Plains, Midwest brace for days of severe storms

19 minutes ago

Severe Weather

Third storm in 3 weeks to unleash more rain, flooding in Hawaii

4 hours ago

 More Stories

Featured Stories

Weather News

California records second-ever snowless April 1 at key location

18 hours ago

Weather News

Three killed in Germany when wind fells tree during Easter egg hunt

23 hours ago

Weather News

Rescuers airlift hiker stung over 100 times by bees off Arizona mounta...

23 hours ago

Winter Weather

French vineyards light hundreds of fires to fight off a spring freeze

3 days ago

Weather News

Fossils show complex life millions of years earlier than thought

14 hours ago
World North America United States Illinois Upper Alton

Weather Near Upper Alton:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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

...

...

...