Dangerous Heat in the East; Critical Fire Weather in the Southwest

Dangerous, record-breaking heat will intensify across most of the central and eastern U.S this week. Heat indices will likely exceed 100 degrees. Heat is likely to continue across the eastern U.S. through the Independence Day holiday weekend. Critical fire weather conditions will continue today and likely Tuesday across portions of the Four Corners and northern High Plains. Read More >

Current conditions at

St Marys County Airport (K2W6)

Lat: 38.32° N Lon: 76.55° W Elev: 144 ft.

Fair

81°F

27°C

Humidity 69%
Wind Speed Calm
Barometer 30.12 in
Dewpoint 70°F (21°C)
Visibility NA
Heat Index84°F (29°C)
Last update 29 Jun 12:55 pm EDT
Detailed forecast for

Charles County

This Afternoon
Mostly sunny. Highs in the mid 80s. East winds around 5 mph.
Tonight
Mostly clear. Lows in the mid 60s. Southeast winds around 5 mph.
Tuesday
Sunny. Highs in the upper 80s. South winds 5 to 10 mph.
Tuesday Night
Mostly clear. Lows in the upper 60s. South winds 5 to 10 mph.
Wednesday
Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph. Heat index values up to 109 in the afternoon.
Wednesday Night
Clear. Lows in the mid 70s.
Thursday
Sunny, hot with highs around 100. Heat index values up to 110.
Thursday Night
Clear. Lows in the upper 70s.
Friday
Sunny, hot with highs around 100. Heat index values up to 110.
Friday Night
Partly cloudy. Lows in the upper 70s.
Independence Day
Mostly sunny with a chance of showers and thunderstorms. Hot with highs around 99. Chance of rain 30 percent. Heat index values up to 110.
Saturday Night
Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 50 percent.
Sunday
Mostly sunny with a chance of showers and thunderstorms. Hot with highs in the mid 90s. Chance of rain 30 percent.



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1246 PM EDT Mon Jun 29 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database