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.

A Few Clouds

80°F

27°C

Humidity 69%
Wind Speed Vrbl 3 mph
Barometer 29.90 in (1012.2 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 13 Aug 5:54 pm EDT
Extended Forecast for

South Williamsport PA

  • Tonight

    Tonight: Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 62. Northwest wind 5 to 7 mph becoming calm in the evening.

    Low: 62 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 85. Light and variable wind.

    High: 85 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61. Calm wind.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 84. Calm wind.

    High: 84 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Partly cloudy, with a low around 64. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 64 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 82. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 82 °F

    Showers
    Likely then
    Showers

  • Sunday Night

    Sunday Night: Showers, mainly before 8pm. Low around 68. Chance of precipitation is 80%.

    Low: 68 °F

    Showers then
    Chance
    Showers

  • Monday

    Monday: A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 40%.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of thunderstorms before 8pm. Mostly clear, with a low around 60. Chance of precipitation is 30%.

    Low: 60 °F

    Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 62. Northwest wind 5 to 7 mph becoming calm in the evening.
Friday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 85. Light and variable wind.
Friday Night
Partly cloudy, with a low around 61. Calm wind.
Saturday
Mostly sunny, with a high near 84. Calm wind.
Saturday Night
A chance of showers after 2am. Partly cloudy, with a low around 64. Calm wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 82. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
Showers, mainly before 8pm. Low around 68. Chance of precipitation is 80%.
Monday
A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 40%.
Monday Night
A chance of thunderstorms before 8pm. Mostly clear, with a low around 60. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 62.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 66. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 84. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Williamsport PA
 41.24°N 76.99°W (Elev. 492 ft)
Last Update:
5:16 pm EDT Aug 13, 2026
Forecast Valid:
6pm EDT Aug 13, 2026-6pm EDT Aug 20, 2026
 
Forecast Discussion
 
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Additional Resources

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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