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

Current conditions at

Harford County Airport (K0W3)

Lat: 39.57°NLon: 76.2°WElev: 412ft.

Mostly Cloudy

72°F

22°C

Humidity	100%
Wind Speed	SE 6 mph
Barometer	29.97 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Last update	5 Jul 6:55 am EDT

More Information:

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

Extended Forecast for

2 Miles SW Jarrettsville MD

Today
High: 91 °F
Partly Sunny
then Chance
T-storms
Tonight
Low: 68 °F
T-storms and
Patchy Fog
then Showers
Likely and
Patchy Fog
Monday
High: 82 °F
Chance
Showers and
Patchy Fog
then Showers
and Patchy
Fog
Monday Night
Low: 66 °F
Showers
Tuesday
High: 80 °F
Showers
Likely
Tuesday Night
Low: 65 °F
Showers
Likely then
Chance
T-storms
Wednesday
High: 82 °F
Chance
Showers
Wednesday Night
Low: 67 °F
Partly Cloudy
then Slight
Chance
Showers
Thursday
High: 87 °F
Chance
Showers then
Chance
T-storms

Detailed Forecast

Today

A chance of showers and thunderstorms, mainly after 5pm. Mostly sunny, with a high near 91. Heat index values as high as 100. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 30%.

Tonight

Showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 1am, then a chance of showers and thunderstorms after 1am. Patchy fog before 3am, then patchy fog after 4am. Low around 68. North wind around 6 mph becoming east in the evening. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Monday

Showers and thunderstorms before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. Patchy fog between noon and 1pm. High near 82. East wind 5 to 7 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday Night

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 66. East wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

Tuesday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 80. Northeast wind around 7 mph. Chance of precipitation is 70%.

Tuesday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms after 8pm. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

Wednesday

A chance of showers and thunderstorms, mainly before 2pm. Partly sunny, with a high near 82. Chance of precipitation is 30%.

Wednesday Night

A slight chance of showers before 8pm, then a slight chance of showers after 2am. Partly cloudy, with a low around 67. Chance of precipitation is 20%.

Thursday

A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 40%.

Thursday Night

A chance of showers and thunderstorms, mainly before 8pm. Partly cloudy, with a low around 70. Chance of precipitation is 30%.

Friday

A chance of showers and thunderstorms. Mostly sunny, with a high near 89. Chance of precipitation is 50%.

Friday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 40%.

Saturday

A chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 40%.