Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Current conditions at

Grinnell Municipal Airfield (KGGI)

Lat: 41.71°NLon: 92.73°WElev: 1007ft.

Fair

84°F

29°C

Humidity 64%
Wind Speed W 9 mph
Barometer 30.00 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 21 Aug 4:35 pm CDT
Extended Forecast for

Lynnville IA

  • This Afternoon

    This Afternoon: Sunny, with a high near 87. West wind around 10 mph.

    High: 87 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 64. Northwest wind 5 to 7 mph becoming calm  after midnight.

    Low: 64 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 84. Light northwest wind becoming north northwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph.

    High: 84 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58. North wind around 6 mph becoming calm  in the evening.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 82. Calm wind.

    High: 82 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 61.

    Low: 61 °F

    Mostly Cloudy

  • Monday

    Monday: A 20 percent chance of showers before 1pm.  Partly sunny, with a high near 79.

    High: 79 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 84.

    High: 84 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 87. West wind around 10 mph.
Tonight
Mostly clear, with a low around 64. Northwest wind 5 to 7 mph becoming calm after midnight.
Saturday
Sunny, with a high near 84. Light northwest wind becoming north northwest 6 to 11 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
Mostly clear, with a low around 58. North wind around 6 mph becoming calm in the evening.
Sunday
Sunny, with a high near 82. Calm wind.
Sunday Night
Mostly cloudy, with a low around 61.
Monday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 79.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
Partly sunny, with a high near 84.
Tuesday Night
A 30 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 65.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Sunny, with a high near 84.
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ABOUT THIS FORECAST

 
Point Forecast:
Lynnville IA
 41.58°N 92.78°W
2:51 pm CDT Aug 21, 2026
4pm CDT Aug 21, 2026-6pm CDT Aug 27, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database