National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Fairfield, Fairfield Municipal Airport (KFWC)

Lat: 38.38°NLon: 88.41°WElev: 436ft.

Mostly Cloudy

37°F

3°C

Humidity 72%
Wind Speed N 12 G 21 mph
Barometer 30.15 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 1 Mar 12:15 am CST
Extended Forecast for

Fairfield IL

  • Overnight

    Overnight: Partly cloudy, with a low around 32. North northeast wind 9 to 13 mph, with gusts as high as 20 mph.

    Low: 32 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 48. Northeast wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 48 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Rain showers and snow showers likely, possibly mixed with sleet before 3am, then rain and snow showers likely between 3am and 4am, then rain showers after 4am. Low around 34. East northeast wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. Little or no snow and sleet accumulation expected.

    Low: 34 °F

    Chance
    Showers then
    Wintry Mix

  • Monday

    Monday: Showers likely, mainly before noon. Cloudy, with a high near 46. East wind 5 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.

    High: 46 °F

    Showers
    Likely then
    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly after midnight. Cloudy, with a low around 41. Light and variable wind becoming south southeast 5 to 7 mph after midnight. Chance of precipitation is 60%.

    Low: 41 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday

    Tuesday: A 50 percent chance of showers. Cloudy, with a high near 67. South southwest wind 7 to 14 mph, with gusts as high as 22 mph.

    High: 67 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely, mainly after midnight. Mostly cloudy, with a low around 56. South wind around 7 mph. Chance of precipitation is 60%.

    Low: 56 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after noon. Cloudy, with a high near 70. South southwest wind 7 to 11 mph, with gusts as high as 20 mph.

    High: 70 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm. Cloudy, with a low around 55. South southwest wind around 8 mph.

    Low: 55 °F

    Showers
    Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 32. North northeast wind 9 to 13 mph, with gusts as high as 20 mph.
Sunday
Partly sunny, with a high near 48. Northeast wind 8 to 10 mph, with gusts as high as 18 mph.
Sunday Night
Rain showers and snow showers likely, possibly mixed with sleet before 3am, then rain and snow showers likely between 3am and 4am, then rain showers after 4am. Low around 34. East northeast wind 7 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 80%. Little or no snow and sleet accumulation expected.
Monday
Showers likely, mainly before noon. Cloudy, with a high near 46. East wind 5 to 9 mph, with gusts as high as 18 mph. Chance of precipitation is 70%.
Monday Night
Showers likely, mainly after midnight. Cloudy, with a low around 41. Light and variable wind becoming south southeast 5 to 7 mph after midnight. Chance of precipitation is 60%.
Tuesday
A 50 percent chance of showers. Cloudy, with a high near 67. South southwest wind 7 to 14 mph, with gusts as high as 22 mph.
Tuesday Night
Showers likely, mainly after midnight. Mostly cloudy, with a low around 56. South wind around 7 mph. Chance of precipitation is 60%.
Wednesday
Showers likely, with thunderstorms also possible after noon. Cloudy, with a high near 70. South southwest wind 7 to 11 mph, with gusts as high as 20 mph.
Wednesday Night
Showers likely and possibly a thunderstorm. Cloudy, with a low around 55. South southwest wind around 8 mph.
Thursday
Showers likely. Mostly cloudy, with a high near 69. South southwest wind 7 to 11 mph, with gusts as high as 18 mph.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 58. South wind 6 to 8 mph.
Friday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 72. South southwest wind 8 to 14 mph, with gusts as high as 22 mph.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 56. South wind 8 to 10 mph, with gusts as high as 20 mph.
Saturday
Showers likely. Cloudy, with a high near 66. Southwest wind 7 to 10 mph, with gusts as high as 20 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Fairfield IL
 38.38°N 88.37°W
Last Update:
12:26 am CST Mar 1, 2026
Forecast Valid:
12am CST Mar 1, 2026-6pm CST Mar 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation