Dangerous Heat in the Central and Eastern U.S.; Severe Thunderstorms in the Central U.S. and Northeast; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Severe thunderstorms are forecast across parts of the Upper Midwest into the Great Lakes, the Northeast, and the central High Plains. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Current conditions at

St Marys County Airport (K2W6)

Lat: 38.32°NLon: 76.55°WElev: 144ft.

Fair

84°F

29°C

Humidity 80%
Wind Speed S 5 mph
Barometer 30.02 in
Dewpoint 77°F (25°C)
Visibility NA
Heat Index94°F (34°C)
Last update 1 Jul 8:55 pm EDT
Extended Forecast for

Port Republic MD

Extreme Heat Warning July 2, 10:00am until July 2, 08:00pm
Extreme Heat Warning July 3, 10:00am until July 3, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
Extreme Heat Warning
  • Tonight

    Tonight: Mostly clear, with a low around 77. Southwest wind around 7 mph.

    Low: 77 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 100. Heat index values as high as 110. Light and variable wind becoming south around 6 mph in the afternoon.

    High: 100 °F

    Hot

  • Thursday Night

    Thursday Night: Clear, with a low around 80. South wind around 6 mph.

    Low: 80 °F

    Clear

  • Friday

    Friday: Sunny and hot, with a high near 103. Heat index values as high as 113. Calm wind becoming south around 5 mph in the afternoon.

    High: 103 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 80. South wind around 5 mph becoming west after midnight.

    Low: 80 °F

    Mostly Clear

  • Independence Day

    Independence Day: A chance of showers and thunderstorms after 2pm.  Mostly sunny and hot, with a high near 101. Chance of precipitation is 40%.

    High: 101 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 2am.  Mostly cloudy, with a low around 76. Chance of precipitation is 40%.

    Low: 76 °F

    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm.  Mostly sunny, with a high near 96. Chance of precipitation is 40%.

    High: 96 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 2am.  Mostly cloudy, with a low around 75. Chance of precipitation is 50%.

    Low: 75 °F

    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 77. Southwest wind around 7 mph.
Thursday
Sunny and hot, with a high near 100. Heat index values as high as 110. Light and variable wind becoming south around 6 mph in the afternoon.
Thursday Night
Clear, with a low around 80. South wind around 6 mph.
Friday
Sunny and hot, with a high near 103. Heat index values as high as 113. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 80. South wind around 5 mph becoming west after midnight.
Independence Day
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 101. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 76. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 50%.
Monday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 92. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 40%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Port Republic MD
 38.48°N 76.55°W (Elev. 98 ft)
7:53 pm EDT Jul 1, 2026
9pm EDT Jul 1, 2026-6pm EDT Jul 8, 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