National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Critical Fire Weather and Severe Thunderstorm Threats This Week

Gusty winds and low relative humidity will contribute to critical fire weather Monday over parts of the central and southern High Plains. Scattered to widespread severe thunderstorms may bring damaging winds, large hail, and tornadoes Monday through Thursday over the lower Mississippi River Valley and southern Plains into the Midwest and Ohio Valley. Read More >

Current conditions at

St Marys County Airport (K2W6)

Lat: 38.32°NLon: 76.55°WElev: 144ft.

Fair

48°F

9°C

Humidity 100%
Wind Speed Calm
Barometer 30.00 in
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 9 Mar 4:55 am EDT
Extended Forecast for

3 Miles W Chaptico MD

  • Today

    Today: Sunny, with a high near 71. Calm wind becoming south around 5 mph in the afternoon.

    High: 71 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 47. Calm wind.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 76. Calm wind becoming south around 6 mph in the afternoon.

    High: 76 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 58. South wind around 6 mph.

    Low: 58 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: A chance of rain after 2pm. Partly sunny, with a high near 78. South wind 6 to 13 mph. Chance of precipitation is 30%.

    High: 78 °F

    Partly Sunny
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 46. Chance of precipitation is 50%.

    Low: 46 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely, mainly before 2pm. Mostly cloudy, with a high near 59. Chance of precipitation is 70%.

    High: 59 °F

    Rain Likely

  • Thursday Night

    Thursday Night: A chance of rain before 8pm. Mostly clear, with a low around 33. Chance of precipitation is 30%.

    Low: 33 °F

    Chance Rain
    then Mostly
    Clear

  • Friday

    Friday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

Detailed Forecast

Today
Sunny, with a high near 71. Calm wind becoming south around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 47. Calm wind.
Tuesday
Sunny, with a high near 76. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
Increasing clouds, with a low around 58. South wind around 6 mph.
Wednesday
A chance of rain after 2pm. Partly sunny, with a high near 78. South wind 6 to 13 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of rain, with thunderstorms also possible after 2am. Mostly cloudy, with a low around 46. Chance of precipitation is 50%.
Thursday
Rain likely, mainly before 2pm. Mostly cloudy, with a high near 59. Chance of precipitation is 70%.
Thursday Night
A chance of rain before 8pm. Mostly clear, with a low around 33. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 56.
Friday Night
Partly cloudy, with a low around 41.
Saturday
Mostly sunny, with a high near 57.
Saturday Night
Partly cloudy, with a low around 42.
Sunday
Mostly cloudy, with a high near 64.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles W Chaptico MD
 38.35°N 76.83°W (Elev. 3 ft)
Last Update:
4:54 am EDT Mar 9, 2026
Forecast Valid:
5am EDT Mar 9, 2026-6pm EDT Mar 15, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation