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

Hazardous Weather Conditions

Current conditions at

Williamsport - Lycoming County Airport (KIPT)

Lat: 41.24°NLon: 76.92°WElev: 522ft.

Mostly Cloudy

90°F

32°C

Humidity 38%
Wind Speed SE 8 mph
Barometer 30.05 in (1017.2 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index90°F (32°C)
Last update 18 May 3:54 pm EDT
Extended Forecast for

South Williamsport PA

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Partly cloudy, with a low around 66. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 91. Light and variable wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 20%.

    High: 91 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 68. Calm wind becoming west around 5 mph.

    Low: 68 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 11am. High near 83. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely before 8pm. Mostly cloudy, with a low around 48. North wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 48 °F

    Showers
    Likely then
    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 46.

    Low: 46 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers. Partly sunny, with a high near 67. Chance of precipitation is 40%.

    High: 67 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Showers. Low around 48. Chance of precipitation is 80%.

    Low: 48 °F

    Showers

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and midnight. Partly cloudy, with a low around 66. Southwest wind around 6 mph becoming calm in the evening. Chance of precipitation is 20%.
Tuesday
A slight chance of showers and thunderstorms after 3pm. Mostly sunny, with a high near 91. Light and variable wind becoming west 6 to 11 mph in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 20%.
Tuesday Night
Partly cloudy, with a low around 68. Calm wind becoming west around 5 mph.
Wednesday
Showers, with thunderstorms also possible after 11am. High near 83. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers likely before 8pm. Mostly cloudy, with a low around 48. North wind around 9 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Partly sunny, with a high near 67.
Thursday Night
Partly cloudy, with a low around 46.
Friday
A chance of showers. Partly sunny, with a high near 67. Chance of precipitation is 40%.
Friday Night
Showers. Low around 48. Chance of precipitation is 80%.
Saturday
Showers. High near 63. Chance of precipitation is 90%.
Saturday Night
Showers likely. Cloudy, with a low around 52. Chance of precipitation is 70%.
Sunday
Showers likely. Mostly cloudy, with a high near 70. Chance of precipitation is 60%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 40%.
Memorial Day
A chance of showers. Mostly cloudy, with a high near 74. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
South Williamsport PA
 41.24°N 76.99°W (Elev. 492 ft)
Last Update:
2:21 pm EDT May 18, 2026
Forecast Valid:
4pm EDT May 18, 2026-6pm EDT May 25, 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