Heavy Rainfall and Flooding in the Southwest and Along the East Coast

A multi-day heavy rainfall event is set to begin across New Mexico into west Texas Tuesday through Wednesday. Flash flooding and debris flows in the vicinity of burn scars will also be possible. A strong coastal low will develop offshore of the Mid-Atlantic coast midweek, bringing heavy rainfall, strong winds and coastal flooding to much of the East Coast through Friday. Read More >

Current conditions at

Hannibal Regional Airport (KHAE)

Lat: 39.73°NLon: 91.44°WElev: 770ft.

Overcast

63°F

17°C

Humidity 94%
Wind Speed Calm
Barometer 30.14 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 22 Sep 2:35 am CDT
Extended Forecast for

4 Miles SSE Williamstown MO

  • Overnight

    Overnight: A slight chance of drizzle.  Cloudy, with a low around 60. East wind around 6 mph.

    Low: 60 °F

    Slight Chance
    Drizzle

  • Tuesday

    Tuesday: A slight chance of drizzle before 9am, then a chance of showers between 9am and noon.  Cloudy, with a high near 63. Northeast wind around 7 mph.  Chance of precipitation is 30%.

    High: 63 °F

    Chance
    Showers then
    Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 52. Northeast wind 3 to 5 mph.

    Low: 52 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 69. Northeast wind 3 to 6 mph.

    High: 69 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 55. Light northeast wind.

    Low: 55 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

  • Friday

    Friday: A 20 percent chance of showers before 1pm.  Partly sunny, with a high near 71.

    High: 71 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 56.

    Low: 56 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A slight chance of drizzle. Cloudy, with a low around 60. East wind around 6 mph.
Tuesday
A slight chance of drizzle before 9am, then a chance of showers between 9am and noon. Cloudy, with a high near 63. Northeast wind around 7 mph. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 52. Northeast wind 3 to 5 mph.
Wednesday
Mostly sunny, with a high near 69. Northeast wind 3 to 6 mph.
Wednesday Night
Partly cloudy, with a low around 55. Light northeast wind.
Thursday
Partly sunny, with a high near 69.
Thursday Night
Mostly cloudy, with a low around 56.
Friday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 71.
Friday Night
Mostly cloudy, with a low around 56.
Saturday
A chance of showers and thunderstorms. Mostly cloudy, with a high near 70. Chance of precipitation is 50%.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 58.
Sunday
A 20 percent chance of showers. Partly sunny, with a high near 79.
Sunday Night
A 20 percent chance of showers. Partly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 82.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Williamstown MO
 40.16°N 91.83°W (Elev. 705 ft)
1:41 am CDT Sep 22, 2026
2am CDT Sep 22, 2026-6pm CDT Sep 28, 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