Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

Current conditions at

Hannibal Regional Airport (KHAE)

Lat: 39.73°NLon: 91.44°WElev: 770ft.

Fair

73°F

23°C

Humidity 65%
Wind Speed S 8 mph
Barometer 29.99 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 31 Aug 6:55 am CDT
Extended Forecast for

Palmyra MO

Heat Advisory August 31, 12:00pm until September 4, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • Today

    Today: Mostly sunny, with a high near 96. Heat index values as high as 100. Southwest wind 8 to 11 mph, with gusts as high as 22 mph.

    High: 96 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 77. South wind 3 to 6 mph.

    Low: 77 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 97. Heat index values as high as 101. Southwest wind around 7 mph.

    High: 97 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 79. Calm wind becoming south around 6 mph after midnight.

    Low: 79 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97. Southwest wind 6 to 8 mph.

    High: 97 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 79.

    Low: 79 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 96.

    High: 96 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 96. Heat index values as high as 100. Southwest wind 8 to 11 mph, with gusts as high as 22 mph.
Tonight
Mostly clear, with a low around 77. South wind 3 to 6 mph.
Tuesday
Sunny and hot, with a high near 97. Heat index values as high as 101. Southwest wind around 7 mph.
Tuesday Night
Mostly clear, with a low around 79. Calm wind becoming south around 6 mph after midnight.
Wednesday
Sunny and hot, with a high near 97. Southwest wind 6 to 8 mph.
Wednesday Night
Mostly clear, with a low around 79.
Thursday
Sunny, with a high near 96.
Thursday Night
Mostly clear, with a low around 74.
Friday
Sunny, with a high near 91.
Friday Night
A 20 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73.
Saturday
A 20 percent chance of showers. Sunny, with a high near 91.
Saturday Night
Partly cloudy, with a low around 71.
Sunday
Mostly sunny, with a high near 89.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Palmyra MO
 39.8°N 91.53°W (Elev. 600 ft)
5:21 am CDT Aug 31, 2026
7am CDT Aug 31, 2026-6pm CDT Sep 6, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database