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.

Unknown Precip Fog/Mist

26°F

-3°C

Humidity 96%
Wind Speed Calm
Barometer 30.03 in (1017.5 mb)
Dewpoint 25°F (-4°C)
Visibility 3.00 mi
Last update 18 Jan 2:53 am EST
Extended Forecast for

Marietta PA

Winter Weather Advisory until January 18, 03:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory until January 18, 03:00pm

    NOW until 3:00pm Sun

    Winter Weather Advisory

  • Overnight

    Low: 27 °F

    Snow Likely

  • Sunday

    Sunday: Snow likely, mainly before 10am. The snow could be heavy at times. Cloudy, with a high near 35. Calm wind becoming northwest 5 to 8 mph in the morning. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    High: 35 °F

    Heavy Snow
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 17. West wind around 6 mph.

    Low: 17 °F

    Decreasing
    Clouds

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 33. Breezy, with a west wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 33 °F

    Mostly Sunny
    then Mostly
    Sunny and
    Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 11. West wind 13 to 16 mph, with gusts as high as 26 mph.

    Low: 11 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 22.

    High: 22 °F

    Sunny

  • Tuesday Night

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

    Low: 9 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

Detailed Forecast

Overnight
Snow likely, mainly after 5am. Cloudy, with a low around 27. Calm wind. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.
Sunday
Snow likely, mainly before 10am. The snow could be heavy at times. Cloudy, with a high near 35. Calm wind becoming northwest 5 to 8 mph in the morning. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 17. West wind around 6 mph.
M.L.King Day
Mostly sunny, with a high near 33. Breezy, with a west wind 5 to 10 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 30 mph.
Monday Night
Mostly clear, with a low around 11. West wind 13 to 16 mph, with gusts as high as 26 mph.
Tuesday
Sunny, with a high near 22.
Tuesday Night
Mostly clear, with a low around 9.
Wednesday
Partly sunny, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 25.
Thursday
Mostly sunny, with a high near 37.
Thursday Night
Mostly clear, with a low around 16.
Friday
Mostly sunny, with a high near 34.
Friday Night
Mostly cloudy, with a low around 25.
Saturday
A chance of rain and snow. Mostly cloudy, with a high near 36. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marietta PA
 40.06°N 76.53°W (Elev. 299 ft)
Last Update:
1:36 am EST Jan 18, 2026
Forecast Valid:
3am EST Jan 18, 2026-6pm EST Jan 24, 2026
 
Forecast Discussion
 
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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

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation