Heat Wave and Severe Thunderstorms this Independence Day

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Midwest, and Mid-Atlantic. Numerous temperature records are expected. Clusters of severe thunderstorms will move across parts of the Allegheny Plateau into Mid Atlantic this Independence Day, with potential for widespread damaging winds. Additional severe thunderstorms in the Great Plains. Read More >

Hazardous Weather Conditions

Current conditions at

St Marys County Airport (K2W6)

Lat: 38.32°NLon: 76.55°WElev: 144ft.

Mostly Cloudy

88°F

31°C

Humidity	56%
Wind Speed	W 13 G 28 mph
Barometer	29.92 in
Dewpoint	70°F (21°C)
Visibility	NA
Heat Index	93°F (34°C)
Last update	4 Jul 7:15 pm EDT

More Information:

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

Extended Forecast for

3 Miles NW Broomes Island MD

Severe T-storm Watch until July 4, 10:00pm

Extreme Heat Warning July 4, 07:34pm until July 4, 09:00pm

Severe T-storm Warning until July 4, 08:00pm

Click here for hazard details and duration

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Severe T-storm Watch until July 4, 10:00pm
Extreme Heat Warning July 4, 07:34pm until July 4, 09:00pm
Severe T-storm Warning until July 4, 08:00pm
NOW: Multiple hazards in effect
Click HERE for Details
Tonight
Low: 75 °F
Severe
Thunderstorms
then Slight
Chance
Showers
Sunday
High: 96 °F
Sunny
Sunday Night
Low: 74 °F
Chance
T-storms then
Slight Chance
T-storms
Monday
High: 90 °F
Showers
Likely then
Showers
Monday Night
Low: 71 °F
Showers
Tuesday
High: 86 °F
Chance
Showers then
Chance
T-storms
Tuesday Night
Low: 69 °F
Chance
T-storms
Wednesday
High: 85 °F
Mostly Sunny

Detailed Forecast

Tonight

Showers and thunderstorms before midnight, then a slight chance of showers between midnight and 3am. Some of the storms could be severe. Low around 75. Northwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday

Sunny, with a high near 96. Heat index values as high as 104. Calm wind becoming southeast 5 to 7 mph in the afternoon.

Sunday Night

A chance of showers and thunderstorms before 3am, then a slight chance of showers after 5am. Increasing clouds, with a low around 74. South wind 5 to 8 mph becoming light and variable after midnight. Chance of precipitation is 50%.

Monday

Showers likely, then showers and possibly a thunderstorm after 11am. High near 90. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Monday Night

Showers and possibly a thunderstorm before 2am, then a chance of showers and thunderstorms after 2am. Low around 71. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.

Tuesday

A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 86. Chance of precipitation is 40%.

Tuesday Night

A chance of showers and thunderstorms, mainly before 8pm. Mostly cloudy, with a low around 69. Chance of precipitation is 30%.

Wednesday

Mostly sunny, with a high near 85.

Wednesday Night

Mostly clear, with a low around 70.

Thursday

A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 20%.

Thursday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 74. Chance of precipitation is 30%.