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

Lafayette, Purdue University Airport (KLAF)

Lat: 40.41°NLon: 86.95°WElev: 604ft.

Fair

67°F

19°C

Humidity 97%
Wind Speed W 3 mph
Barometer 29.95 in (1013.9 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Last update 19 Aug 3:54 am EDT
Extended Forecast for

2 Miles E Collegeville IN

  • Overnight

    Overnight: A 20 percent chance of showers before 4am.  Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 66. West southwest wind around 5 mph.

    Low: 66 °F

    Slight Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms after 1pm.  Patchy fog before 8am.  Otherwise, mostly cloudy, with a high near 77. Calm wind becoming west around 5 mph in the afternoon.

    High: 77 °F

    Patchy Fog
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 20 percent chance of showers before 11pm.  Mostly cloudy, with a low around 60. North northeast wind around 5 mph.

    Low: 60 °F

    Slight Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 78. North northeast wind around 5 mph becoming calm.

    High: 78 °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 before 1am, then a slight chance of showers.  Partly cloudy, with a low around 62. Chance of precipitation is 30%.

    Low: 62 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers after 1pm.  Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Overnight
A 20 percent chance of showers before 4am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 66. West southwest wind around 5 mph.
Wednesday
A 30 percent chance of showers and thunderstorms after 1pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 77. Calm wind becoming west around 5 mph in the afternoon.
Wednesday Night
A 20 percent chance of showers before 11pm. Mostly cloudy, with a low around 60. North northeast wind around 5 mph.
Thursday
Sunny, with a high near 78. North northeast wind around 5 mph becoming calm.
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 before 1am, then a slight chance of showers. Partly cloudy, with a low around 62. Chance of precipitation is 30%.
Saturday
A chance of showers after 1pm. Mostly sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 59.
Sunday
Mostly sunny, with a high near 74.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Collegeville IN
 40.91°N 87.13°W
3:46 am CDT Aug 19, 2026
3am CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database