Dangerous, Heat Wave Persists in the Eastern U.S.; Severe Weather Expected in the Central Plains and Mid-Atlantic

A prolonged, dangerous heat wave will persist through the Independence Day weekend across the Ohio Valley, Mid-South, and East Coast. Severe thunderstorms are expected to produce damaging wind gusts from the Upper Ohio Valley into the Mid Atlantic, and across the central Great Plains this afternoon and evening. Large hail and heavy rain is also possible across the Great Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Lancaster, Lancaster Airport (KLNS)

Lat: 40.12°NLon: 76.29°WElev: 397ft.

Fair

80°F

27°C

Humidity	56%
Wind Speed	NW 8 mph
Barometer	29.96 in (1014.1 mb)
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Heat Index	81°F (27°C)
Last update	4 Jul 3:53 am EDT

More Information:

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

Extended Forecast for

Paradise PA

Extreme Heat Warning July 4, 04:18am until July 4, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning July 4, 04:18am until July 4, 08:00pm
NOW until 8:00pm Sat
Extreme Heat Warning
Independence Day
High: 97 °F
Mostly Sunny
then Severe
Thunderstorms
Tonight
Low: 71 °F
Severe
Thunderstorms
and Patchy
Fog
Sunday
High: 89 °F
Patchy Fog
then Heavy
Rain
Sunday Night
Low: 67 °F
Heavy Rain
then Showers
Monday
High: 80 °F
Showers
Monday Night
Low: 65 °F
Showers
Likely
Tuesday
High: 81 °F
Chance
T-storms
Tuesday Night
Low: 65 °F
Chance
Showers

Detailed Forecast

Independence Day

A chance of showers and thunderstorms, mainly after 5pm. Some of the storms could be severe. Mostly sunny and hot, with a high near 97. Heat index values as high as 105. Light west wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

A chance of showers and thunderstorms, mainly before midnight. Some of the storms could be severe. Patchy fog between 3am and 5am. Otherwise, mostly cloudy, with a low around 71. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday

A chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Some of the storms could produce heavy rainfall. Patchy fog before 8am. Otherwise, partly sunny, with a high near 89. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night

Showers and thunderstorms before 2am, then showers likely and possibly a thunderstorm between 2am and 5am, then showers likely after 5am. Some of the storms could produce heavy rainfall. Low around 67. East wind 5 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

Monday

Showers, with thunderstorms also possible after 11am. High near 80. East wind 6 to 8 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Monday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 65. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

Tuesday

A chance of showers and thunderstorms. Mostly cloudy, with a high near 81. Chance of precipitation is 40%.

Tuesday Night

A chance of showers before 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.

Wednesday

Partly sunny, with a high near 84.

Wednesday Night

Partly cloudy, with a low around 66.

Thursday

A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 30%.

Thursday Night

A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 40%.