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 >

Current conditions at

Waterloo, Waterloo Municipal Airport (KALO)

Lat: 42.55°NLon: 92.4°WElev: 873ft.

Fair

66°F

19°C

Humidity 87%
Wind Speed N 7 mph
Barometer 29.96 in (1014.0 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 19 Aug 7:54 am CDT
Extended Forecast for

2 Miles WNW Readlyn IA

  • Today

    Today: Mostly sunny, with a high near 77. North northeast wind around 6 mph.

    High: 77 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 58. Light east northeast wind.

    Low: 58 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: Sunny, with a high near 78. Calm wind becoming south southwest 5 to 9 mph in the morning.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: A slight chance of showers, then a chance of showers and thunderstorms after 10pm.  Increasing clouds, with a low around 63. South wind around 8 mph.  Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Friday

    Friday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm.  Mostly sunny, with a high near 79. South southwest wind 8 to 11 mph becoming west northwest in the afternoon.  Chance of precipitation is 20%.

    High: 79 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 77. North northeast wind around 6 mph.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 58. Light east northeast wind.
Thursday
Sunny, with a high near 78. Calm wind becoming south southwest 5 to 9 mph in the morning.
Thursday Night
A slight chance of showers, then a chance of showers and thunderstorms after 10pm. Increasing clouds, with a low around 63. South wind around 8 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny, with a high near 79. South southwest wind 8 to 11 mph becoming west northwest in the afternoon. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 62.
Saturday
Sunny, with a high near 77.
Saturday Night
Mostly clear, with a low around 58.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
Partly cloudy, with a low around 58.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 61.
Tuesday
Mostly sunny, with a high near 78.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles WNW Readlyn IA
 42.72°N 92.25°W
6:51 am CDT Aug 19, 2026
8am 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