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

Heat Advisory in effect from July 5, 10:00 AM EDT until July 5, 08:00 PM EDT

Current conditions at

St Marys County Airport (K2W6)

Lat: 38.32°NLon: 76.55°WElev: 144ft.

Overcast

74°F

23°C

Humidity	98%
Wind Speed	Calm
Barometer	29.95 in
Dewpoint	74°F (23°C)
Visibility	NA
Last update	5 Jul 6:15 am EDT

More Information:

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

Extended Forecast for

2 Miles SSW Saint Leonard MD

Heat Advisory July 5, 10:00am until July 5, 08:00pm

Click here for hazard details and duration

Heat Advisory

Today
High: 94 °F
Sunny
Tonight
Low: 76 °F
Chance
T-storms then
Chance
Showers
Monday
High: 91 °F
Chance
Showers then
Showers
Likely
Monday Night
Low: 73 °F
Showers
Tuesday
High: 88 °F
Showers
Likely
Tuesday Night
Low: 71 °F
Showers
Likely
Wednesday
High: 88 °F
Slight Chance
T-storms
Wednesday Night
Low: 72 °F
Partly Cloudy
then Slight
Chance
Showers
Thursday
High: 92 °F
Slight Chance
Showers then
Chance
T-storms

Detailed Forecast

Today

Sunny, with a high near 94. Heat index values as high as 105. Calm wind becoming southeast 5 to 7 mph in the afternoon.

Tonight

A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 76. South wind 5 to 7 mph becoming light and variable after midnight. Chance of precipitation is 50%.

Monday

A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 91. Heat index values as high as 101. Northeast wind 3 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday Night

Showers and possibly a thunderstorm before 5am, then showers likely. Low around 73. East wind 3 to 5 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tuesday

Showers likely before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 88. North wind 3 to 6 mph. Chance of precipitation is 70%.

Tuesday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms, mainly between 8pm and 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

Wednesday

A slight chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 20%.

Wednesday Night

A slight chance of showers after 2am. Partly cloudy, with a low around 72. Chance of precipitation is 20%.

Thursday

A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92. Chance of precipitation is 40%.

Thursday Night

A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 75. Chance of precipitation is 30%.

Friday

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

Friday Night

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