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.

Overcast

73°F

23°C

Humidity 90%
Wind Speed NE 7 mph
Barometer 30.02 in (1016.3 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 6 Jul 11:54 am EDT
Extended Forecast for

South Branch PA

  • This Afternoon

    This Afternoon: Showers and possibly a thunderstorm. High near 75. East wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. East wind 3 to 7 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers before 3pm, then a slight chance of showers and thunderstorms between 3pm and 4pm, then a slight chance of thunderstorms after 4pm. Mostly cloudy, with a high near 77. East wind 3 to 5 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 60. Light east wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 60 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 83. Light and variable wind.

    High: 83 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 30%.

    High: 86 °F

    Mostly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 70%.

    High: 83 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

This Afternoon
Showers and possibly a thunderstorm. High near 75. East wind around 6 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. East wind 3 to 7 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of showers before 3pm, then a slight chance of showers and thunderstorms between 3pm and 4pm, then a slight chance of thunderstorms after 4pm. Mostly cloudy, with a high near 77. East wind 3 to 5 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers, mainly before 8pm. Mostly cloudy, with a low around 60. Light east wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Mostly sunny, with a high near 83. Light and variable wind.
Wednesday Night
Partly cloudy, with a low around 63.
Thursday
A chance of showers after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Thursday Night
A chance of showers before 2am. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 70%.
Friday Night
Showers likely before 8pm. Mostly cloudy, with a low around 62. Chance of precipitation is 60%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 82. Chance of precipitation is 40%.
Saturday Night
A chance of thunderstorms. Partly cloudy, with a low around 60. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Branch PA
 41.65°N 76.45°W (Elev. 1099 ft)
Last Update:
10:03 am EDT Jul 6, 2026
Forecast Valid:
12pm EDT Jul 6, 2026-6pm EDT Jul 12, 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