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.

Overcast

50°F

10°C

Humidity 60%
Wind Speed N 8 mph
Barometer 30.26 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Wind Chill47°F (8°C)
Last update 20 Apr 12:35 am CDT
Extended Forecast for

4 Miles S Johnsonville IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 39. Northeast wind 3 to 5 mph.

    Low: 39 °F

    Mostly Cloudy

  • Monday

    Monday: Sunny, with a high near 65. Calm wind becoming east northeast around 5 mph.

    High: 65 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47. Calm wind becoming southeast around 6 mph in the evening.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 76. Southwest wind 6 to 15 mph, with gusts as high as 23 mph.

    High: 76 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 55. Southwest wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77. Southwest wind 6 to 10 mph.

    High: 77 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 55. South wind around 6 mph.

    Low: 55 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 80. South wind 6 to 14 mph, with gusts as high as 23 mph.

    High: 80 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. South wind around 10 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Partly Cloudy
    then Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 39. Northeast wind 3 to 5 mph.
Monday
Sunny, with a high near 65. Calm wind becoming east northeast around 5 mph.
Monday Night
Mostly clear, with a low around 47. Calm wind becoming southeast around 6 mph in the evening.
Tuesday
Mostly sunny, with a high near 76. Southwest wind 6 to 15 mph, with gusts as high as 23 mph.
Tuesday Night
Mostly clear, with a low around 55. Southwest wind 7 to 10 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 77. Southwest wind 6 to 10 mph.
Wednesday Night
Mostly clear, with a low around 55. South wind around 6 mph.
Thursday
Mostly sunny, with a high near 80. South wind 6 to 14 mph, with gusts as high as 23 mph.
Thursday Night
A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 62. South wind around 10 mph, with gusts as high as 20 mph.
Friday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 74. South wind 10 to 14 mph, with gusts as high as 21 mph.
Friday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 54. Southwest wind around 7 mph becoming north northwest after midnight.
Saturday
A chance of showers. Mostly sunny, with a high near 73. North wind 7 to 9 mph.
Saturday Night
A chance of showers. Partly cloudy, with a low around 51. North northeast wind around 6 mph.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 73. North northeast wind around 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Johnsonville IL
 38.45°N 88.54°W
Last Update:
12:01 am CDT Apr 20, 2026
Forecast Valid:
12am CDT Apr 20, 2026-6pm CDT Apr 26, 2026
 
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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