Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Hazardous Weather Conditions

Current conditions at

Valparaiso Porter County Municipal Airport (KVPZ)

Lat: 41.45°NLon: 87°WElev: 768ft.

Overcast

68°F

20°C

Humidity 93%
Wind Speed N 5 mph
Barometer 29.94 in (1013.4 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 18 Aug 11:56 pm CDT
Extended Forecast for

4 Miles E Chesterton IN

  • Overnight

    Overnight: Showers likely and possibly a thunderstorm before 3am, then a slight chance of showers between 3am and 4am.  Mostly cloudy, with a low around 66. West southwest wind 5 to 10 mph.  Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A slight chance of showers between 1pm and 2pm.  Partly sunny, with a high near 76. West wind 5 to 10 mph becoming north in the afternoon.  Chance of precipitation is 20%.

    High: 76 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 58. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 58 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 77. Calm wind becoming east northeast around 5 mph.

    High: 77 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms.  Partly cloudy, with a low around 62. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Overnight
Showers likely and possibly a thunderstorm before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 66. West southwest wind 5 to 10 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A slight chance of showers between 1pm and 2pm. Partly sunny, with a high near 76. West wind 5 to 10 mph becoming north in the afternoon. Chance of precipitation is 20%.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 58. Northeast wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 77. Calm wind becoming east northeast around 5 mph.
Thursday Night
Mostly clear, with a low around 58. Calm wind.
Friday
A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 78.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles E Chesterton IN
 41.61°N 86.96°W
12:11 am CDT Aug 19, 2026
12am CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database