Go Back
  • For Business
  • |
  • Warnings
  • Data Suite
  • Forensics
  • Advertising
  • Superior Accuracy™
Lala’s stormy close encounter with Hawaii to last into Sunday night. See the latest. Chevron right

Fairfield, IL

89°F
Location Chevron down
Location News Videos
Use Current Location
Recent

Fairfield

Illinois

89°
No results found.
Try searching for a city, zip code or point of interest.
Get Premium+
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
Fairfield, 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
Sunday, August 16

Current Weather

6:41 PM

89°F
Partly sunny
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.
LEARN MORE
RealFeel Shade™ 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
RealFeel®
91°
RealFeel Shade™
90°
Heat Index
95°
Max UV Index
0.4 (Low)
Wind
E 2 mph
Wind Gusts
4 mph
Humidity
54%
Indoor Humidity
54% (Very Humid)
Dew Point
71° F
Pressure
↔ 29.96 in
Cloud Cover
34%
Visibility
10 mi
Cloud Ceiling
10600 ft

Day

8/16
94°Hi
RealFeel® 108°
Dangerous Heat
RealFeel Guide
Dangerous Heat
108° to 115°
Caution advised. Danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
RealFeel Shade™ 99°
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
Partly sunny and humid with a couple of showers and a thunderstorm, mainly later; thunderstorms can bring flash flooding and localized damaging wind gusts
alerts

Extreme Heat Warning

11:00 AM Thursday - 8:00 PM Sunday

Max UV Index9.0 (Very High)

AccuLumen Brightness Index™7 (Bright)

WindWNW 5 mph

Wind Gusts14 mph

Probability of Precipitation96%

Probability of Thunderstorms58%

Precipitation0.62 in

Rain Amount0.62 in

Total Hours of Precipitation3

Total Hours of Rain3

Cloud Cover49%

Morning

Afternoon

Night

8/16
71°Lo
RealFeel® 77°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
A heavy thunderstorm this evening; otherwise, cloudy, warm and very humid
alerts

Extreme Heat Warning

11:00 AM Thursday - 8:00 PM Sunday

WindNNW 5 mph

Wind Gusts6 mph

Probability of Precipitation55%

Probability of Thunderstorms33%

Precipitation0.15 in

Rain Amount0.15 in

Total Hours of Precipitation1

Total Hours of Rain1

Cloud Cover95%

Evening

Overnight

Sun & Moon

13 hrs 37 mins
Rise 6:09 AM
Set 7:46 PM
Waxing Crescent
Rise 10:27 AM
Set 9:41 PM

Temperature History

8/16
High
Low
Forecast
94°
71°
Average
88°
64°
Last Year
93°
71°

Current Weather Conditions in Fairfield

Fairfield, Illinois is currently Partly sunny with a temperature of 89°. The current RealFeel® Temperature is 91° (Hot) based on observed conditions including 54% humidity, 34% cloud cover, a UV index of 0, and winds of 2 mph. In shade, the RealFeel Shade™ is 90°. AccuWeather's MinuteCast® provides minute-by-minute precipitation forecasts for Fairfield, powered by forecasting systems and proprietary technology developed by AccuWeather meteorologists since 1962.

Further Ahead

Hourly

10-Day

Monthly

Around the Globe

Hurricane Tracker

Severe Weather

Radar & Maps

News

Video

Winter Center

Top Stories

Hurricane

Lala's stormy close encounter with Hawaii to last into Sunday night

4 hours ago

Hurricane

Lala triggers destructive Hawaii flooding, widespread power outages

5 hours ago

Weather Forecasts

Dangerous heat dome to reign across the South with little relief

4 hours ago

Severe Weather

Flooding sweeps northern Indiana, breaking 113-year-old record

2 days ago

Severe Weather

Severe weather, flooding threat to stretch from Plains to East

4 hours ago

More Stories

Featured Stories

Weather News

Powerful 7.7 magnitude earthquake hits Indonesia

1 day ago

Weather News

3 child hot car deaths reported in 3 days as U.S. toll reaches 20

2 days ago

Weather News

How deadly is quicksand, really? And how can you escape?

4 days ago

Astronomy

Stunning images reveal ‘whirlpools’ swirling across the sun

4 days ago

Climate

How extreme heat could affect your grocery bill

5 days ago

World North America United States Illinois Fairfield

Weather Near Fairfield:

  • Evansville, IN
  • Henderson, KY
  • Owensboro, 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

...

...

...