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

De Kalb Taylor Municipal Airport (KDKB)

Lat: 41.93°NLon: 88.71°WElev: 909ft.

Fair

60°F

16°C

Humidity 99%
Wind Speed S 6 mph
Barometer 30.12 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 28 Aug 5:15 am CDT
Extended Forecast for

Waterman IL

  • Today

    Today: Patchy fog before 8am. Otherwise, sunny, with a high near 81. Calm wind becoming south around 5 mph in the afternoon.

    High: 81 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. South wind around 5 mph.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 79. South wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 79 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 65. South southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 65 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 86. South wind around 15 mph, with gusts as high as 25 mph.

    High: 86 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69.

    Low: 69 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Monday

    Monday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

  • Monday Night

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

    Low: 72 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, sunny, with a high near 81. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 60. South wind around 5 mph.
Saturday
Partly sunny, with a high near 79. South wind 5 to 10 mph, with gusts as high as 15 mph.
Saturday Night
Mostly cloudy, with a low around 65. South southeast wind around 10 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 86. South wind around 15 mph, with gusts as high as 25 mph.
Sunday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 69.
Monday
Mostly sunny, with a high near 87.
Monday Night
Partly cloudy, with a low around 72.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
A chance of showers after 1am. Partly cloudy, with a low around 70.
Wednesday
Mostly sunny, with a high near 88.
Wednesday Night
Mostly clear, with a low around 70.
Thursday
Mostly sunny, with a high near 87.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Waterman IL
 41.77°N 88.77°W
Last Update:
1:21 am CDT Aug 28, 2026
Forecast Valid:
5am CDT Aug 28, 2026-6pm CDT Sep 3, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation