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

64°F

18°C

Humidity 81%
Wind Speed Calm
Barometer 29.96 in (1014.2 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 22 Jun 12:54 am EDT
Extended Forecast for

South Williamsport PA

  • Overnight

    Overnight: Cloudy, with a low around 61. Calm wind.

    Low: 61 °F

    Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 9am. High near 71. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 71 °F

    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Patchy fog between midnight and 2am. Low around 58. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 58 °F

    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: Mostly cloudy, then gradually becoming sunny, with a high near 77. North wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 77 °F

    Decreasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 55. Northwest wind 3 to 7 mph.

    Low: 55 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers after 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 50%.

    High: 83 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 70%.

    Low: 62 °F

    Showers
    Likely

Detailed Forecast

Overnight
Cloudy, with a low around 61. Calm wind.
Monday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 9am. High near 71. Calm wind becoming east around 5 mph in the morning. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Patchy fog between midnight and 2am. Low around 58. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Mostly cloudy, then gradually becoming sunny, with a high near 77. North wind 8 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 55. Northwest wind 3 to 7 mph.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
A chance of showers after 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 50%.
Thursday Night
A chance of showers before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 70%.
Friday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 40%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Partly cloudy, with a low around 59.
Sunday
Mostly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Williamsport PA
 41.22°N 77.02°W (Elev. 856 ft)
Last Update:
1:05 am EDT Jun 22, 2026
Forecast Valid:
1am EDT Jun 22, 2026-6pm EDT Jun 28, 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