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

Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Aurora Municipal Airport (KARR)

Lat: 41.77°NLon: 88.48°WElev: 696ft.

Fair

73°F

23°C

Humidity 74%
Wind Speed NA
Barometer 30.01 in (1016.0 mb)
Dewpoint 64°F (18°C)
Visibility 9.00 mi
Last update 27 Aug 6:52 pm CDT
Extended Forecast for

Big Rock IL

  • Tonight

    Tonight: Patchy fog after 2am. Otherwise, partly cloudy, with a low around 59. North northeast wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Partly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, sunny, with a high near 82. Calm wind becoming south around 5 mph in the morning.

    High: 82 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. South wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 82. South wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 82 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers, with thunderstorms also possible after 10pm. Mostly cloudy, with a low around 66. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 86.

    High: 86 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71.

    Low: 71 °F

    Partly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: Partly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 2am. Otherwise, partly cloudy, with a low around 59. North northeast wind around 5 mph becoming calm in the evening.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 82. Calm wind becoming south around 5 mph in the morning.
Friday Night
Partly cloudy, with a low around 59. South wind around 5 mph becoming calm in the evening.
Saturday
Partly sunny, with a high near 82. South wind 5 to 10 mph, with gusts as high as 20 mph.
Saturday Night
A chance of showers, with thunderstorms also possible after 10pm. Mostly cloudy, with a low around 66. South southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Sunday
Partly sunny, with a high near 86.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 71.
Monday
Partly sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 72.
Tuesday
Mostly sunny, with a high near 88.
Tuesday Night
Partly cloudy, with a low around 71.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
Partly cloudy, with a low around 70.
Thursday
Mostly sunny, with a high near 86.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Big Rock IL
 41.76°N 88.53°W
Last Update:
2:51 pm CDT Aug 27, 2026
Forecast Valid:
7pm CDT Aug 27, 2026-6pm CDT Sep 3, 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