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

Mount Carmel, Mount Carmel Municipal Airport (KAJG)

Lat: 38.61°NLon: 87.73°WElev: 423ft.

Fair

68°F

20°C

Humidity 74%
Wind Speed S 10 mph
Barometer 29.94 in
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 1 Apr 3:35 am CDT
Extended Forecast for

Lancaster IL

  • Overnight

    Overnight: A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 67. South wind around 9 mph.

    Low: 67 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers and thunderstorms, mainly before 4pm. High near 74. South southwest wind 6 to 11 mph becoming west northwest in the afternoon. Chance of precipitation is 80%.

    High: 74 °F

    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 63. East southeast wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.

    Low: 63 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Thursday

    Thursday: A 50 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Breezy, with a south wind 14 to 19 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 39 mph.

    High: 80 °F

    Breezy.
    Partly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 64. Breezy, with a south southwest wind 11 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.

    Low: 64 °F

    Showers and
    Breezy

  • Friday

    Friday: Showers, with thunderstorms also possible after 10am. High near 80. South southwest wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.

    High: 80 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. South wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.

    Low: 62 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday

    Saturday: Showers and possibly a thunderstorm. Mostly cloudy, with a high near 69. South wind 13 to 16 mph becoming west in the afternoon. Winds could gust as high as 23 mph.

    High: 69 °F

    Showers

  • Saturday Night

    Saturday Night: A chance of showers, mainly before 1am. Mostly cloudy, with a low around 39. West northwest wind 11 to 14 mph, with gusts as high as 21 mph.

    Low: 39 °F

    Chance
    Showers

Detailed Forecast

Overnight
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a steady temperature around 67. South wind around 9 mph.
Wednesday
Showers and thunderstorms, mainly before 4pm. High near 74. South southwest wind 6 to 11 mph becoming west northwest in the afternoon. Chance of precipitation is 80%.
Wednesday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 63. East southeast wind 6 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 40%.
Thursday
A 50 percent chance of showers and thunderstorms after 1pm. Mostly cloudy, with a high near 80. Breezy, with a south wind 14 to 19 mph increasing to 20 to 25 mph in the afternoon. Winds could gust as high as 39 mph.
Thursday Night
Showers and possibly a thunderstorm. Low around 64. Breezy, with a south southwest wind 11 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 80%.
Friday
Showers, with thunderstorms also possible after 10am. High near 80. South southwest wind 10 to 15 mph, with gusts as high as 22 mph. Chance of precipitation is 80%.
Friday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 62. South wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
Saturday
Showers and possibly a thunderstorm. Mostly cloudy, with a high near 69. South wind 13 to 16 mph becoming west in the afternoon. Winds could gust as high as 23 mph.
Saturday Night
A chance of showers, mainly before 1am. Mostly cloudy, with a low around 39. West northwest wind 11 to 14 mph, with gusts as high as 21 mph.
Sunday
Sunny, with a high near 54. Northwest wind 11 to 16 mph, with gusts as high as 22 mph.
Sunday Night
Mostly clear, with a low around 34. North northwest wind 5 to 10 mph becoming light north after midnight.
Monday
Sunny, with a high near 61. Calm wind becoming south southwest around 6 mph in the morning.
Monday Night
Partly cloudy, with a low around 41. West southwest wind 3 to 5 mph.
Tuesday
Sunny, with a high near 60. North wind 6 to 9 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
Lancaster IL
 38.54°N 87.91°W
Last Update:
3:22 am CDT Apr 1, 2026
Forecast Valid:
3am CDT Apr 1, 2026-6pm CDT Apr 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