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

Harrisburg, Harrisburg International Airport (KMDT)

Lat: 40.19°NLon: 76.76°WElev: 312ft.

A Few Clouds

98°F

37°C

Humidity	33%
Wind Speed	W 5 mph
Barometer	29.88 in (1011.6 mb)
Dewpoint	64°F (18°C)
Visibility	10.00 mi
Heat Index	101°F (38°C)
Last update	4 Jul 3:56 pm EDT

More Information:

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

Extended Forecast for

3 Miles WSW York Haven PA

Severe T-storm Watch until July 4, 11:00pm

Extreme Heat Warning July 4, 04:29pm until July 4, 08:00pm

Click here for hazard details and duration

Severe T-storm Watch

Extreme Heat Warning

Severe T-storm Watch until July 4, 11:00pm
Extreme Heat Warning July 4, 04:29pm until July 4, 08:00pm
NOW: Multiple hazards in effect
Click HERE for Details
Independence Day
High: 99 °F
Severe
Thunderstorms
Tonight
Low: 71 °F
Severe
Thunderstorms
Sunday
High: 91 °F
Partly Sunny
then Chance
T-storms
Sunday Night
Low: 67 °F
Heavy Rain
Monday
High: 79 °F
Showers then
T-storms
Monday Night
Low: 64 °F
T-storms then
Showers
Tuesday
High: 80 °F
Showers
Likely then
Chance
T-storms
Tuesday Night
Low: 64 °F
Chance
T-storms then
Mostly Cloudy

Detailed Forecast

Independence Day

Scattered showers and thunderstorms, mainly after 5pm. Some of the storms could be severe. Mostly sunny and hot, with a high near 99. Heat index values as high as 102. West wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and thunderstorms likely, mainly before 11pm. Some of the storms could be severe. Cloudy, then gradually becoming partly cloudy, with a low around 71. West wind around 5 mph becoming calm after midnight. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Sunday

A slight chance of showers between noon and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 91. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 67. Northeast wind around 6 mph becoming light and variable after midnight. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Monday

Showers and possibly a thunderstorm. High near 79. East wind 5 to 7 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

Monday Night

Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

Tuesday

Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.

Tuesday Night

A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.

Wednesday

Mostly sunny, with a high near 84.

Wednesday Night

Partly cloudy, with a low around 66.

Thursday

Mostly sunny, with a high near 89.

Thursday Night

Partly cloudy, with a low around 69.