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

Hazardous Weather Conditions

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Fair

83°F

28°C

Humidity	96%
Wind Speed	SW 5 mph
Barometer	30.00 in
Dewpoint	82°F (28°C)
Visibility	9.00 mi
Heat Index	97°F (36°C)
Last update	1 Jul 9:35 pm EDT

More Information:

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

Extended Forecast for

2 Miles N Perryville 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

Tonight
Low: 77 °F
Isolated
T-storms then
Clear
Thursday
High: 101 °F
Hot
Thursday Night
Low: 79 °F
Clear
Friday
High: 102 °F
Hot
Friday Night
Low: 78 °F
Mostly Clear
Independence Day
High: 99 °F
Sunny then
Chance
T-storms
Saturday Night
Low: 75 °F
Chance
T-storms
Sunday
High: 95 °F
Mostly Sunny
then Showers
Likely
Sunday Night
Low: 73 °F
Showers
Likely

Detailed Forecast

Tonight

Isolated showers and thunderstorms before 11pm. Mostly clear, with a low around 77. Southwest wind around 5 mph becoming calm after midnight. Chance of precipitation is 20%.

Thursday

Sunny and hot, with a high near 101. Heat index values as high as 112. Calm wind becoming south around 6 mph in the afternoon.

Thursday Night

Clear, with a low around 79. Southwest wind around 6 mph becoming calm in the evening.

Friday

Sunny and hot, with a high near 102. Heat index values as high as 110. Calm wind becoming west 5 to 7 mph in the afternoon.

Friday Night

Mostly clear, with a low around 78. Southwest wind around 5 mph becoming calm in the evening.

Independence Day

A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 99. Chance of precipitation is 40%.

Saturday Night

A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 75. Chance of precipitation is 40%.

Sunday

Showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 95. Chance of precipitation is 60%.

Sunday Night

Showers likely and possibly a thunderstorm before 2am, then a slight chance of showers. Mostly cloudy, with a low around 73. Chance of precipitation is 60%.

Monday

A slight chance of showers before 8am, then a chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 90. Chance of precipitation is 60%.

Monday Night

Showers and thunderstorms likely. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

Tuesday

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

Tuesday Night

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

Wednesday

Mostly sunny, with a high near 87.