Dangerous Heat in the Southwest; Severe Thunderstorms and Heavy Rain in the Northeast and Mid-Atlantic

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week. Strong to severe thunderstorms may produce damaging wind, hail, a tornado or two, heavy rain and flash flooding across parts of the Mid-Atlantic and Northeast. Heavy rainfall threat continues across the Gulf Coast. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Light Rain Fog/Mist Thunderstorm in Vicinity

73°F

23°C

Humidity	100%
Wind Speed	S 5 mph
Barometer	30.00 in
Dewpoint	73°F (23°C)
Visibility	4.00 mi
Last update	27 Aug 10:35 am EDT

More Information:

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

Extended Forecast for

Charlestown MD

Today
High: 85 °F
Showers
Likely then
Severe
Thunderstorms
Tonight
Low: 69 °F
Severe
Thunderstorms
then Chance
Showers and
Patchy Fog
Friday
High: 84 °F
Areas Fog
then Slight
Chance
T-storms
Friday Night
Low: 67 °F
Mostly Cloudy
Saturday
High: 85 °F
Mostly Sunny
Saturday Night
Low: 68 °F
Mostly Clear
then Patchy
Fog
Sunday
High: 87 °F
Patchy Fog
then Sunny
Sunday Night
Low: 72 °F
Partly Cloudy
Monday
High: 90 °F
Mostly Sunny

Detailed Forecast

Today

Showers likely and possibly a thunderstorm before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Some of the storms could be severe. Partly sunny, with a high near 85. South wind around 9 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

A chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 3am. Some of the storms could be severe. Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 69. Light and variable wind. Chance of precipitation is 50%.

Friday

A slight chance of showers and thunderstorms after 3pm. Areas of fog before 9am. Otherwise, partly sunny, with a high near 84. Calm wind becoming northwest around 5 mph. Chance of precipitation is 20%.

Friday Night

Mostly cloudy, with a low around 67. Calm wind.

Saturday

Mostly sunny, with a high near 85. Northeast wind around 5 mph becoming calm in the afternoon.

Saturday Night

Patchy fog before 1am, then patchy fog after 3am. Otherwise, mostly clear, with a low around 68.

Sunday

Patchy fog before 7am. Otherwise, mostly sunny, with a high near 87.

Sunday Night

Partly cloudy, with a low around 72.

Monday

Mostly sunny, with a high near 90.