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 from parts of the central High Plains into the Upper Midwest, and across parts of the Northeast. Critical fire weather conditions will continue across portions of the Four Corners and Great Basin. Read More >

Hazardous Weather Conditions

Current conditions at

St Marys County Airport (K2W6)

Lat: 38.32°NLon: 76.55°WElev: 144ft.

Fair

74°F

23°C

Humidity	84%
Wind Speed	SW 6 mph
Barometer	30.07 in
Dewpoint	69°F (21°C)
Visibility	NA
Last update	1 Jul 3:55 am EDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

3 Miles WNW Charlotte Hall MD

Extreme Heat Watch July 2, 11:00am until July 3, 08:00pm

Heat Advisory July 1, 11:00am until July 1, 08:00pm

Click here for hazard details and duration

Extreme Heat Watch

Heat Advisory

Today
High: 96 °F
Sunny
Tonight
Low: 75 °F
Clear
Thursday
High: 100 °F
Hot
Thursday Night
Low: 78 °F
Clear
Friday
High: 103 °F
Hot
Friday Night
Low: 78 °F
Slight Chance
T-storms
Independence Day
High: 100 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 75 °F
Chance
T-storms then
Chance
Showers
Sunday
High: 98 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

Today

Sunny, with a high near 96. Heat index values as high as 105. South wind 7 to 9 mph, with gusts as high as 18 mph.

Tonight

Clear, with a low around 75. South wind 7 to 10 mph, with gusts as high as 22 mph.

Thursday

Sunny and hot, with a high near 100. Heat index values as high as 111. South wind 3 to 7 mph.

Thursday Night

Clear, with a low around 78. Southwest wind around 6 mph.

Friday

Sunny and hot, with a high near 103. West wind 3 to 7 mph.

Friday Night

A slight chance of showers and thunderstorms before 2am. Mostly clear, with a low around 78. Chance of precipitation is 20%.

Independence Day

A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 100. Chance of precipitation is 30%.

Saturday Night

A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 75. Chance of precipitation is 30%.

Sunday

A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 98. Chance of precipitation is 30%.

Sunday Night

A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 74. Chance of precipitation is 50%.

Monday

Showers likely and possibly a thunderstorm. Partly sunny, with a high near 94. Chance of precipitation is 60%.

Monday Night

Showers and thunderstorms likely. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.

Tuesday

A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Chance of precipitation is 40%.