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

Harlan, Harlan Municipal Airport (KHNR)

Lat: 41.58°NLon: 95.34°WElev: 1230ft.

Fair

72°F

22°C

Humidity 100%
Wind Speed NE 5 mph
Barometer 29.94 in
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Last update 18 Aug 11:55 pm CDT
Extended Forecast for

4 Miles S Persia IA

  • Overnight

    Overnight: A 10 percent chance of showers and thunderstorms after 5am.  Mostly cloudy, with a low around 65. Light east wind.

    Low: 65 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms, mainly after 5pm.  Patchy fog before 9am.  Otherwise, mostly sunny, with a high near 79. Northeast wind 3 to 6 mph.  New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Chance
    T-storms and
    Patchy Fog

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm.  Partly cloudy, with a low around 61. Light east wind.  Chance of precipitation is 20%.

    Low: 61 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Sunny, with a high near 83. Calm wind becoming south 5 to 7 mph in the morning.

    High: 83 °F

    Sunny

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 1am.  Mostly clear, with a low around 64. South wind 3 to 5 mph.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Chance
    T-storms

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before 1pm.  Sunny, with a high near 85. Calm wind becoming west around 6 mph in the morning.

    High: 85 °F

    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am.  Partly cloudy, with a low around 64. Light northeast wind.

    Low: 64 °F

    Chance
    T-storms

  • Saturday

    Saturday: Mostly sunny, with a high near 82. Calm wind becoming north northeast around 6 mph in the afternoon.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 61. East wind around 6 mph.

    Low: 61 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 10 percent chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 65. Light east wind.
Wednesday
A 40 percent chance of showers and thunderstorms, mainly after 5pm. Patchy fog before 9am. Otherwise, mostly sunny, with a high near 79. Northeast wind 3 to 6 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 11pm. Partly cloudy, with a low around 61. Light east wind. Chance of precipitation is 20%.
Thursday
Sunny, with a high near 83. Calm wind becoming south 5 to 7 mph in the morning.
Thursday Night
A 30 percent chance of showers and thunderstorms before 1am. Mostly clear, with a low around 64. South wind 3 to 5 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A 20 percent chance of showers and thunderstorms before 1pm. Sunny, with a high near 85. Calm wind becoming west around 6 mph in the morning.
Friday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 64. Light northeast wind.
Saturday
Mostly sunny, with a high near 82. Calm wind becoming north northeast around 6 mph in the afternoon.
Saturday Night
Partly cloudy, with a low around 61. East wind around 6 mph.
Sunday
A chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 79. Southeast wind 5 to 11 mph, with gusts as high as 16 mph.
Sunday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 63. Southeast wind 7 to 10 mph.
Monday
Mostly sunny, with a high near 82. Southeast wind 6 to 8 mph.
Monday Night
Partly cloudy, with a low around 64. East wind around 6 mph becoming calm in the evening.
Tuesday
Mostly sunny, with a high near 84. Calm wind becoming north northwest around 6 mph in the afternoon.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles S Persia IA
 41.52°N 95.58°W (Elev. 1148 ft)
10:35 pm CDT Aug 18, 2026
12am 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