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

Hazardous Weather Conditions

Current conditions at

Mount Carmel, Mount Carmel Municipal Airport (KAJG)

Lat: 38.61°NLon: 87.73°WElev: 423ft.

Fair

82°F

28°C

Humidity 94%
Wind Speed Calm
Barometer 30.13 in
Dewpoint 81°F (27°C)
Visibility 10.00 mi
Heat Index93°F (34°C)
Last update 3 Jul 7:35 am CDT
Extended Forecast for

Lancaster IL

Heat Advisory July 3, 08:00pm until July 4, 08:00pm
Extreme Heat Warning July 3, 08:05am until July 3, 08:00pm
Click here for hazard details and duration
Heat Advisory
Extreme Heat Warning
  •  
    Extreme Heat Warning July 3, 08:05am until July 3, 08:00pm

    NOW until 8:00pm Fri

    Extreme Heat Warning

  • Today

    High: 94 °F

    Sunny then
    Slight Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 75. Light south wind.

    Low: 75 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Independence Day

    Independence Day: Showers and thunderstorms likely, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. Increasing clouds, with a high near 92. Calm wind becoming south southwest around 6 mph in the morning. Chance of precipitation is 60%.

    High: 92 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 10pm, then a slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. Light south southwest wind. Chance of precipitation is 60%.

    Low: 73 °F

    Showers
    Likely then
    Chance
    T-storms

  • Sunday

    Sunday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 90. West southwest wind 3 to 6 mph.

    High: 90 °F

    Chance
    T-storms

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71. Light west northwest wind.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 88. Calm wind becoming west northwest around 6 mph in the afternoon. Chance of precipitation is 40%.

    High: 88 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers, mainly after 1am. Partly cloudy, with a low around 70. North northwest wind around 5 mph becoming calm in the evening.

    Low: 70 °F

    Chance
    Showers

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 3pm. Sunny, with a high near 94. Heat index values as high as 106. Calm wind becoming south around 6 mph in the afternoon.
Tonight
A 20 percent chance of showers and thunderstorms before 9pm. Mostly clear, with a low around 75. Light south wind.
Independence Day
Showers and thunderstorms likely, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. Increasing clouds, with a high near 92. Calm wind becoming south southwest around 6 mph in the morning. Chance of precipitation is 60%.
Saturday Night
Showers and thunderstorms likely before 10pm, then a slight chance of showers between 10pm and 1am, then a chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73. Light south southwest wind. Chance of precipitation is 60%.
Sunday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 90. West southwest wind 3 to 6 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 71. Light west northwest wind.
Monday
A chance of showers, with thunderstorms also possible after 1pm. Mostly sunny, with a high near 88. Calm wind becoming west northwest around 6 mph in the afternoon. Chance of precipitation is 40%.
Monday Night
A chance of showers, mainly after 1am. Partly cloudy, with a low around 70. North northwest wind around 5 mph becoming calm in the evening.
Tuesday
A slight chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 87. North wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 70. North northeast wind around 5 mph becoming calm in the evening.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Light east southeast wind.
Wednesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 71. Light and variable wind.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind becoming south southwest around 6 mph in the morning.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lancaster IL
 38.54°N 87.88°W
Last Update:
7:11 am CDT Jul 3, 2026
Forecast Valid:
8am CDT Jul 3, 2026-6pm CDT Jul 9, 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