Dangerous, Record-Breaking Heat to Continue in the Central and Eastern U.S.; Severe Thunderstorms in the Upper Midwest; Critical Fire Weather in the Four Corners

Dangerous, record-breaking heat will continue across most of the central and eastern U.S this week. Heat indices will exceed 100 degrees. Severe storms will be possible from the northern Plains into the Midwest and Great Lakes regions, as well as across the southern Appalachians Thursday, with the primary threat large to very large hail. Critical fire weather to continue in the Four Corners Region Read More >

Hazardous Weather Conditions

Current conditions at

St Marys County Airport (K2W6)

Lat: 38.32°NLon: 76.55°WElev: 144ft.

Partly Cloudy

80°F

27°C

Humidity	77%
Wind Speed	SW 6 mph
Barometer	30.04 in
Dewpoint	72°F (22°C)
Visibility	NA
Heat Index	84°F (29°C)
Last update	2 Jul 2:55 am EDT

More Information:

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

Extended Forecast for

2 Miles WNW Leonardtown 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

Overnight
Low: 76 °F
Mostly Clear
Thursday
High: 100 °F
Hot
Thursday Night
Low: 79 °F
Clear
Friday
High: 101 °F
Hot
Friday Night
Low: 79 °F
Mostly Clear
Independence Day
High: 99 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 76 °F
Chance
T-storms
Sunday
High: 97 °F
Mostly Sunny
then Chance
T-storms
Sunday Night
Low: 74 °F
Showers
Likely

Detailed Forecast

Overnight

Mostly clear, with a low around 76. Southwest wind around 6 mph.

Thursday

Sunny and hot, with a high near 100. Heat index values as high as 112. Calm wind becoming south 5 to 7 mph in the afternoon.

Thursday Night

Clear, with a low around 79. South wind 3 to 7 mph.

Friday

Sunny and hot, with a high near 101. Heat index values as high as 112. Calm wind becoming southwest around 5 mph in the afternoon.

Friday Night

Mostly clear, with a low around 79. Light and variable wind.

Independence Day

A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 99. Chance of precipitation is 30%.

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 and hot, with a high near 97. Chance of precipitation is 40%.

Sunday Night

A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am. Mostly cloudy, with a low around 74. Chance of precipitation is 60%.

Monday

Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 92. Chance of precipitation is 70%.

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 30%.

Tuesday Night

A chance of showers and thunderstorms. Partly cloudy, with a low around 70. Chance of precipitation is 30%.

Wednesday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 20%.