Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Hazardous Weather Conditions

Current conditions at

Lancaster, Lancaster Airport (KLNS)

Lat: 40.12°NLon: 76.29°WElev: 397ft.

Fair

67°F

19°C

Humidity 45%
Wind Speed SE 5 mph
Barometer 30.22 in (1023.5 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 10 Apr 1:53 pm EDT
Extended Forecast for

Cornwall PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 70. South wind around 10 mph.

    High: 70 °F

    Sunny

  • Tonight

    Tonight: A slight chance of showers between 11pm and 1am.  Mostly cloudy, then gradually becoming mostly clear, with a low around 47. South wind around 10 mph becoming northwest after midnight.  Chance of precipitation is 20%.

    Low: 47 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 61. Northwest wind 10 to 14 mph, with gusts as high as 23 mph.

    High: 61 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 38. North wind around 6 mph.

    Low: 38 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 63. East wind 5 to 13 mph becoming south in the afternoon. Winds could gust as high as 23 mph.

    High: 63 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 51.

    Low: 51 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly cloudy, with a high near 75.

    High: 75 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 58.

    Low: 58 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 70. South wind around 10 mph.
Tonight
A slight chance of showers between 11pm and 1am. Mostly cloudy, then gradually becoming mostly clear, with a low around 47. South wind around 10 mph becoming northwest after midnight. Chance of precipitation is 20%.
Saturday
Sunny, with a high near 61. Northwest wind 10 to 14 mph, with gusts as high as 23 mph.
Saturday Night
Mostly clear, with a low around 38. North wind around 6 mph.
Sunday
Mostly sunny, with a high near 63. East wind 5 to 13 mph becoming south in the afternoon. Winds could gust as high as 23 mph.
Sunday Night
Mostly cloudy, with a low around 51.
Monday
Mostly cloudy, with a high near 75.
Monday Night
Mostly cloudy, with a low around 58.
Tuesday
Partly sunny, with a high near 80.
Tuesday Night
Mostly cloudy, with a low around 62.
Wednesday
Partly sunny, with a high near 85.
Wednesday Night
Mostly cloudy, with a low around 63.
Thursday
Partly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Cornwall PA
 40.27°N 76.41°W (Elev. 633 ft)
1:52 pm EDT Apr 10, 2026
2pm EDT Apr 10, 2026-6pm EDT Apr 16, 2026
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database