National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Lancaster, Lancaster Airport (KLNS)

Lat: 40.12°NLon: 76.29°WElev: 397ft.

Overcast

29°F

-2°C

Humidity 66%
Wind Speed Calm
Barometer 30.01 in (1016.7 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 16 Jan 11:53 pm EST
Extended Forecast for

Cornwall PA

Winter Weather Advisory January 17, 05:00am until January 17, 12:00pm
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: A chance of snow showers before 3am, then a chance of snow showers after 5am. Cloudy, with a low around 27. South wind around 9 mph. Chance of precipitation is 40%.

    Low: 27 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: Snow showers, mainly before 11am. High near 40. South wind 6 to 9 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 40 °F

    Snow Showers
    then Slight
    Chance Snow
    Showers

  • Saturday Night

    Saturday Night: A slight chance of snow showers after 1am. Increasing clouds, with a low around 28. Southwest wind around 6 mph. Chance of precipitation is 20%.

    Low: 28 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Sunday

    Sunday: A slight chance of snow showers before 1pm. Mostly cloudy, with a high near 32. West wind 6 to 10 mph. Chance of precipitation is 20%.

    High: 32 °F

    Slight Chance
    Snow Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 19. West wind around 8 mph.

    Low: 19 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 9.

    Low: 9 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 19.

    High: 19 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 10.

    Low: 10 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of snow showers before 3am, then a chance of snow showers after 5am. Cloudy, with a low around 27. South wind around 9 mph. Chance of precipitation is 40%.
Saturday
Snow showers, mainly before 11am. High near 40. South wind 6 to 9 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Saturday Night
A slight chance of snow showers after 1am. Increasing clouds, with a low around 28. Southwest wind around 6 mph. Chance of precipitation is 20%.
Sunday
A slight chance of snow showers before 1pm. Mostly cloudy, with a high near 32. West wind 6 to 10 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 19. West wind around 8 mph.
M.L.King Day
Mostly sunny, with a high near 32.
Monday Night
Mostly clear, with a low around 9.
Tuesday
Sunny, with a high near 19.
Tuesday Night
Mostly clear, with a low around 10.
Wednesday
Partly sunny, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 26.
Thursday
Mostly cloudy, with a high near 38.
Thursday Night
Partly cloudy, with a low around 21.
Friday
A chance of snow showers. Partly sunny, with a high near 30. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cornwall PA
 40.27°N 76.41°W (Elev. 633 ft)
Last Update:
11:11 pm EST Jan 16, 2026
Forecast Valid:
12am EST Jan 17, 2026-6pm EST Jan 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation