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

Hannibal Regional Airport (KHAE)

Lat: 39.73°NLon: 91.44°WElev: 770ft.

Mostly Cloudy

72°F

22°C

Humidity 94%
Wind Speed Calm
Barometer 29.95 in
Dewpoint 70°F (21°C)
Visibility 7.00 mi
Last update 19 Aug 4:35 am CDT
Extended Forecast for

Lewistown MO

  • Overnight

    Overnight: Isolated showers and thunderstorms.  Cloudy, with a low around 69. Light southeast wind.  Chance of precipitation is 20%.

    Low: 69 °F

    Isolated
    T-storms

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 5pm. Some of the storms could produce heavy rainfall.  Mostly cloudy, with a high near 79. Light and variable wind.  Chance of precipitation is 60%.

    High: 79 °F

    Isolated
    T-storms then
    Heavy Rain

  • Wednesday Night

    Wednesday Night: Scattered showers and thunderstorms, mainly before 8pm.  Mostly cloudy, with a low around 65. Calm wind.  Chance of precipitation is 30%.

    Low: 65 °F

    Scattered
    T-storms then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 81. Light northeast wind.

    High: 81 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers and thunderstorms after 1am.  Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear
    then Chance
    T-storms

  • Saturday

    Saturday: A 20 percent chance of showers and thunderstorms before 1pm.  Sunny, with a high near 83.

    High: 83 °F

    Slight Chance
    T-storms

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

Detailed Forecast

Overnight
Isolated showers and thunderstorms. Cloudy, with a low around 69. Light southeast wind. Chance of precipitation is 20%.
Wednesday
Showers and thunderstorms likely, mainly after 5pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 79. Light and variable wind. Chance of precipitation is 60%.
Wednesday Night
Scattered showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 81. Light northeast wind.
Thursday Night
Mostly clear, with a low around 65. Calm wind.
Friday
Sunny, with a high near 85.
Friday Night
A 40 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 66.
Saturday
A 20 percent chance of showers and thunderstorms before 1pm. Sunny, with a high near 83.
Saturday Night
Mostly clear, with a low around 63.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
A 20 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 82.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
Mostly sunny, with a high near 84.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Lewistown MO
 40.09°N 91.81°W (Elev. 673 ft)
4:21 am CDT Aug 19, 2026
4am CDT Aug 19, 2026-6pm CDT Aug 25, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database