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

Hazardous Weather Conditions

Current conditions at

Patuxent River, Naval Air Station (KNHK)

Lat: 38.28°NLon: 76.41°WElev: 39ft.

Mostly Cloudy

90°F

32°C

Humidity 68%
Wind Speed SW 12 mph
Barometer 30.02 in (1016.7 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index105°F (41°C)
Last update 16 Jul 1:52 pm EDT
Extended Forecast for

St. Marys City MD

  • This Afternoon

    This Afternoon: Showers likely and possibly a thunderstorm before 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 90. Heat index values as high as 102. South wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Showers
    Likely

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly before 4am. Mostly cloudy, with a low around 77. South wind 7 to 9 mph. Chance of precipitation is 30%.

    Low: 77 °F

    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers and thunderstorms between 3pm and 5pm. Mostly sunny, with a high near 94. Heat index values as high as 105. Southwest wind around 11 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.

    High: 94 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 79. Southwest wind around 7 mph.

    Low: 79 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. North wind around 6 mph. Chance of precipitation is 30%.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 30%.

    Low: 75 °F

    Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 50%.

    High: 86 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 40%.

    Low: 74 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 50%.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
Showers likely and possibly a thunderstorm before 3pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 90. Heat index values as high as 102. South wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms, mainly before 4am. Mostly cloudy, with a low around 77. South wind 7 to 9 mph. Chance of precipitation is 30%.
Thursday
A slight chance of showers and thunderstorms between 3pm and 5pm. Mostly sunny, with a high near 94. Heat index values as high as 105. Southwest wind around 11 mph, with gusts as high as 18 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around 79. Southwest wind around 7 mph.
Friday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. North wind around 6 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms, mainly before 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 50%.
Sunday Night
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 86.
Monday Night
Partly cloudy, with a low around 72.
Tuesday
Mostly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
St. Marys City MD
 38.2°N 76.43°W (Elev. 10 ft)
Last Update:
1:30 pm EDT Jul 16, 2025
Forecast Valid:
2pm EDT Jul 16, 2025-6pm EDT Jul 22, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation