Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
When will frigid air loosen its grip on the Northeast, Midwest? Get the forecast. Chevron right

Posey, IL

34°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Posey

Illinois

34°
No results found.
Try searching for a city, zip code or point of interest.
settings
Posey, IL 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, January 18

Day

1/18
39°Hi
RealFeel® 43°
Chilly
RealFeel Guide
Chilly
40° to 52°
Jacket or sweater is recommended.
LEARN MORE
RealFeel Shade™ 39°
Cold
RealFeel Guide
Cold
25° to 39°
Coats and hats are appropriate, consider gloves and a scarf.
LEARN MORE
Partly sunny

Max UV Index3.0 (Moderate)

WindW 6 mph

Wind Gusts10 mph

Probability of Precipitation20%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover30%

Morning

Afternoon

Night

1/18
21°Lo
RealFeel® 15°
Very Cold
RealFeel Guide
Very Cold
10° to 24°
Caution advised. Older adults, infants, and those with sensitive medical conditions, should be well dressed to protect from hypothermia and frostbite. Coat, hat, gloves and a scarf are appropriate.
LEARN MORE
Partly cloudy

WindS 4 mph

Wind Gusts9 mph

Probability of Precipitation25%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover68%

Evening

Overnight

Sun & Moon

9 hrs 51 mins
Rise 7:13 AM
Set 5:04 PM
New Moon
Rise 7:25 AM
Set 4:56 PM

Temperature History

1/18
High
Low
Forecast
39°
21°
Average
37°
20°
Last Year
40°
27°

Further Ahead

Hourly

Daily

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Winter Weather

Series of storms to bring slippery travel to Great Lakes, Northeast

32 minutes ago

Weather Forecasts

Storminess to continue in Cali into new week, but pattern change ahead

15 minutes ago

Winter Weather

80 inches of snow in Juneau, Alaska smashes record, sinks boats

4 days ago

Weather Forecasts

After a frigid December, a warmup awaits the Midwest and Northeast

15 hours ago

Health

More than 2,000 measles cases reported in the US in 2025

2 days ago

 More Stories

Featured Stories

Lightning flashes during thundersnow in Pennsylvania

1 day ago 0:16

Weather News

Suspected mountain lion attack in Colorado leaves woman dead

2 days ago

Travel

Ocean Infinity resumes search for Malaysia Airlines Flight 370

2 days ago

Astronomy

Top rocket launches of 2025 you had to see to believe

4 days ago

Astronomy

Full moons and supermoons in 2026: Every date to know

22 hours ago
World North America United States Illinois Posey

Weather Near Posey:

  • 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 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
© 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

...

...

...