Heat and Severe Thunderstorms in the Eastern U.S.

A widespread heat wave will peak over the South and East today, with several dozen temperature records expected along the East Coast. Heat should begin to ease this weekend in the Northeast, while hazardous heat continues over the South. Severe thunderstorms capable of damaging winds are possible across parts of the Appalachians, Mid Atlantic, and Northeast this afternoon and evening. Read More >

Hazardous Weather Conditions

Current conditions at

Lancaster, Lancaster Airport (KLNS)

Lat: 40.12°NLon: 76.29°WElev: 397ft.

Partly Cloudy

93°F

34°C

Humidity	40%
Wind Speed	W 16 G 25 mph
Barometer	29.74 in (1006.5 mb)
Dewpoint	65°F (18°C)
Visibility	10.00 mi
Heat Index	95°F (35°C)
Last update	12 Jun 4:53 pm EDT

More Information:

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

Extended Forecast for

Cornwall PA

Heat Advisory June 12, 05:17pm until June 12, 08:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory June 12, 05:17pm until June 12, 08:00pm
NOW until 8:00pm Fri
Heat Advisory
This Afternoon
High: 92 °F
Scattered
T-storms
Tonight
Low: 63 °F
Partly Cloudy
Saturday
High: 86 °F
Sunny
Saturday Night
Low: 64 °F
Mostly Clear
Sunday
High: 86 °F
Slight Chance
Showers then
Showers
Sunday Night
Low: 60 °F
Showers
Monday
High: 75 °F
Mostly Sunny
Monday Night
Low: 56 °F
Partly Cloudy

Detailed Forecast

This Afternoon

Scattered showers and thunderstorms. Partly sunny and hot, with a high near 92. West wind around 13 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

Partly cloudy, with a low around 63. Northwest wind 8 to 11 mph, with gusts as high as 20 mph.

Saturday

Sunny, with a high near 86. Northwest wind around 7 mph.

Saturday Night

Mostly clear, with a low around 64. Light southwest wind.

Sunday

A slight chance of showers, then showers and possibly a thunderstorm after 2pm. High near 86. Southwest wind 5 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Sunday Night

Showers and possibly a thunderstorm, mainly before 2am. Low around 60. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday

Mostly sunny, with a high near 75.

Monday Night

Partly cloudy, with a low around 56.

Tuesday

Mostly sunny, with a high near 76.

Tuesday Night

Partly cloudy, with a low around 58.

Wednesday

A chance of showers. Mostly sunny, with a high near 80. Chance of precipitation is 30%.

Wednesday Night

A chance of showers. Partly cloudy, with a low around 62. Chance of precipitation is 30%.