Dangerous Heat Wave Continues; Areas of Severe Thunderstorms Today

Dangerous, record-breaking heat will continue across most of the central and eastern U.S through Friday then focusing on the eastern U.S. through the Independence Day weekend. Peak heat indices of up to 115 degrees are possible. Strong to severe thunderstorms will be possible from the northern Plains into the Midwest and Great Lakes regions, as well as across the southern Appalachians today. Read More >

Hazardous Weather Conditions

Current conditions at

Lancaster, Lancaster Airport (KLNS)

Lat: 40.12°NLon: 76.29°WElev: 397ft.

Fair

95°F

35°C

Humidity	49%
Wind Speed	N 8 mph
Barometer	30.05 in (1017.2 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	105°F (41°C)
Last update	2 Jul 10:53 am EDT

More Information:

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

Extended Forecast for

Cornwall PA

Extreme Heat Warning July 2, 11:12am until July 4, 08:00pm

Click here for hazard details and duration

Extreme Heat Warning

Extreme Heat Warning July 2, 11:12am until July 4, 08:00pm
NOW until 8:00pm Sat
Extreme Heat Warning
Today
High: 102 °F
Hot
Tonight
Low: 78 °F
Mostly Clear
Friday
High: 100 °F
Sunny then
Slight Chance
T-storms
Friday Night
Low: 77 °F
Partly Cloudy
Independence Day
High: 98 °F
Sunny then
Slight Chance
T-storms
Saturday Night
Low: 73 °F
Chance
T-storms then
Chance
Showers
Sunday
High: 92 °F
Partly Sunny
then Showers
Likely
Sunday Night
Low: 70 °F
Showers

Detailed Forecast

Today

Sunny and hot, with a high near 102. Heat index values as high as 110. West wind 5 to 7 mph.

Tonight

Mostly clear, with a low around 78. West wind around 6 mph.

Friday

A slight chance of showers and thunderstorms after 1pm. Mostly sunny and hot, with a high near 100. Heat index values as high as 109. Light northwest wind becoming west 5 to 9 mph in the morning. Chance of precipitation is 20%.

Friday Night

Partly cloudy, with a low around 77. West wind 5 to 8 mph.

Independence Day

A slight chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 98. West wind 5 to 11 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

Saturday Night

A chance of showers and thunderstorms, mainly between 8pm and 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Sunday

Showers likely and possibly a thunderstorm after 2pm. Partly sunny and hot, with a high near 92. Chance of precipitation is 70%.

Sunday Night

Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 70. Chance of precipitation is 80%.

Monday

A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 86. Chance of precipitation is 70%.

Monday Night

Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.

Tuesday

Partly sunny, with a high near 86.

Tuesday Night

Partly cloudy, with a low around 67.

Wednesday

A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 30%.