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

Widespread Showers in the Eastern US; Severe Thunderstorms in the Plains; Heatwave in the Desert Southwest

Widespread showers and thunderstorms across much of the central and eastern U.S. will produce areas of excessive rainfall, especially in the southern Mid-Atlantic states. Scattered severe thunderstorms are expected from Montana into portions of the central/southern Plains this weekend. A heatwave will build in the Desert Southwest, in parts of Arizona, southeastern California, and southern Nevada. Read More >

Current conditions at

De Kalb Taylor Municipal Airport (KDKB)

Lat: 41.93°NLon: 88.71°WElev: 909ft.

Overcast

76°F

24°C

Humidity 65%
Wind Speed NE 8 mph
Barometer 30.05 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 14 Jun 3:35 pm CDT
Extended Forecast for

Marengo IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 77. East northeast wind around 10 mph.

    High: 77 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. East northeast wind 5 to 10 mph.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Scattered sprinkles after 4pm. Mostly sunny, with a high near 83. East wind 5 to 10 mph.

    High: 83 °F

    Scattered
    Sprinkles

  • Sunday Night

    Sunday Night: Scattered sprinkles before 7pm. Mostly cloudy, with a low around 63. East wind 5 to 10 mph.

    Low: 63 °F

    Scattered
    Sprinkles

  • Monday

    Monday: Partly sunny, with a high near 85. South southeast wind 5 to 10 mph.

    High: 85 °F

    Partly Sunny

  • Monday Night

    Monday Night: A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 89.

    High: 89 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 67.

    Low: 67 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: Showers and thunderstorms likely. Mostly cloudy, with a high near 81.

    High: 81 °F

    T-storms
    Likely

Detailed Forecast

This Afternoon
Sunny, with a high near 77. East northeast wind around 10 mph.
Tonight
Mostly clear, with a low around 58. East northeast wind 5 to 10 mph.
Sunday
Scattered sprinkles after 4pm. Mostly sunny, with a high near 83. East wind 5 to 10 mph.
Sunday Night
Scattered sprinkles before 7pm. Mostly cloudy, with a low around 63. East wind 5 to 10 mph.
Monday
Partly sunny, with a high near 85. South southeast wind 5 to 10 mph.
Monday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 66.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 89.
Tuesday Night
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 67.
Wednesday
Showers and thunderstorms likely. Mostly cloudy, with a high near 81.
Wednesday Night
A chance of showers and thunderstorms before 1am. Mostly cloudy, with a low around 63.
Juneteenth
Mostly sunny, with a high near 81.
Thursday Night
Mostly clear, with a low around 61.
Friday
Mostly sunny, with a high near 85.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marengo IL
 42.24°N 88.59°W
Last Update:
1:56 pm CDT Jun 14, 2025
Forecast Valid:
3pm CDT Jun 14, 2025-6pm CDT Jun 20, 2025
 
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