Dangerous Heat to Continue through the Holiday Weekend; Severe Storms on Friday from the Plains to the Mid-Atlantic

Dangerous, record-breaking heat will continue across most of the central and eastern U.S through Friday then focusing across the eastern U.S. through the Independence Day holiday weekend. Peak heat indices of up to 115 degrees are possible. Isolated to scattered severe thunderstorms are possible from the northern/central Plains into the Midwest, Ohio Valley, and Mid-Atlantic Friday. Read More >

Hazardous Weather Conditions

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Fair

84°F

29°C

Humidity	94%
Wind Speed	S 3 mph
Barometer	30.00 in
Dewpoint	82°F (28°C)
Visibility	10.00 mi
Heat Index	100°F (38°C)
Last update	2 Jul 9:55 pm EDT

More Information:

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

Extended Forecast for

Perryville MD

Extreme Heat Warning July 3, 10:00am until July 3, 08:00pm

Extreme Heat Warning July 4, 10:00am until July 4, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Tonight
Low: 83 °F
Clear
Friday
High: 99 °F
Hot
Friday Night
Low: 83 °F
Mostly Clear
Independence Day
High: 96 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 78 °F
Chance
T-storms
Sunday
High: 90 °F
Partly Sunny
then Showers
Likely
Sunday Night
Low: 72 °F
Showers
Likely
Monday
High: 83 °F
Showers
Likely
Monday Night
Low: 69 °F
Showers
Likely

Detailed Forecast

Tonight

Clear, with a low around 83. Southwest wind 5 to 7 mph becoming light and variable after midnight.

Friday

Sunny and hot, with a high near 99. Heat index values as high as 107. Light and variable wind becoming west around 6 mph in the afternoon.

Friday Night

Mostly clear, with a low around 83. Southwest wind around 5 mph becoming light and variable after midnight.

Independence Day

A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Heat index values as high as 104. West wind 3 to 8 mph. Chance of precipitation is 30%.

Saturday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 78. West wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 50%.

Sunday

Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 90. Chance of precipitation is 60%.

Sunday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 72. Chance of precipitation is 70%.

Monday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.

Monday Night

Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.

Tuesday

A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.

Tuesday Night

A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 20%.

Wednesday

A slight chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 20%.

Wednesday Night

Partly cloudy, with a low around 70.

Thursday

A slight chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 20%.