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

Williamsport - Lycoming County Airport (KIPT)

Lat: 41.24°NLon: 76.92°WElev: 522ft.

Fair

72°F

22°C

Humidity 48%
Wind Speed Calm
Barometer 30.29 in (1025.8 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 15 Sep 5:54 pm EDT
Extended Forecast for

South Williamsport PA

  • Tonight

    Tonight: Partly cloudy, with a low around 53. South wind around 6 mph becoming calm in the evening.

    Low: 53 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 81. Calm wind.

    High: 81 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers, mainly after 2am. Mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 65 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 82. Light and variable wind. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Chance
    Showers then
    Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 2am. Low around 63. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Showers then
    Slight Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 76.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 70.

    High: 70 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

    Low: 59 °F

    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 53. South wind around 6 mph becoming calm in the evening.
Wednesday
Partly sunny, with a high near 81. Calm wind.
Wednesday Night
A chance of showers, mainly after 2am. Mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 82. Light and variable wind. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and possibly a thunderstorm before 8pm, then a slight chance of showers between 8pm and 2am. Low around 63. Calm wind becoming northwest around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 52.
Saturday
Partly sunny, with a high near 70.
Saturday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Sunday
Showers likely. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.
Monday
A chance of showers. Mostly cloudy, with a high near 72. Chance of precipitation is 50%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 71. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
South Williamsport PA
 41.24°N 76.99°W (Elev. 492 ft)
Last Update:
6:08 pm EDT Sep 15, 2026
Forecast Valid:
6pm EDT Sep 15, 2026-6pm EDT Sep 22, 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