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

Severe Thunderstorms and Critical Fire Weather Wednesday

Scattered severe thunderstorms are possible across portions of the northern High Plains Wednesday afternoon and evening. Severe wind gusts are the primary hazard. Gusty winds and low relative humidity will contribute to critical fire weather conditions across parts of the northern Great Plains and Great Basin Wednesday. Read More >

Hazardous Weather Conditions

Current conditions at

Williamsport - Lycoming County Airport (KIPT)

Lat: 41.24°NLon: 76.92°WElev: 522ft.

Mostly Cloudy

56°F

13°C

Humidity 65%
Wind Speed NE 9 mph
Barometer 29.89 in (1012.0 mb)
Dewpoint 44°F (7°C)
Visibility 10.00 mi
Last update 13 May 5:54 am EDT
Extended Forecast for

South Williamsport PA

  • Today

    Today: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4pm. High near 63. South wind 6 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 63 °F

    Chance
    Showers then
    Showers

  • Tonight

    Tonight: Showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Low around 45. Southwest wind 5 to 7 mph becoming light and variable in the evening. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 45 °F

    Showers then
    Slight Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers after noon. Partly sunny, with a high near 56. Northwest wind 7 to 10 mph. Chance of precipitation is 20%.

    High: 56 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 46. Northwest wind 9 to 11 mph, with gusts as high as 22 mph.

    Low: 46 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 68. Northwest wind 7 to 15 mph, with gusts as high as 24 mph.

    High: 68 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 77.

    High: 77 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.

    High: 85 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 4pm. High near 63. South wind 6 to 13 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Low around 45. Southwest wind 5 to 7 mph becoming light and variable in the evening. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of showers after noon. Partly sunny, with a high near 56. Northwest wind 7 to 10 mph. Chance of precipitation is 20%.
Thursday Night
Mostly cloudy, with a low around 46. Northwest wind 9 to 11 mph, with gusts as high as 22 mph.
Friday
Partly sunny, with a high near 68. Northwest wind 7 to 15 mph, with gusts as high as 24 mph.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 77.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
A chance of showers after 2pm. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Sunday Night
A chance of showers before 8pm. Partly cloudy, with a low around 58. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 89.
Monday Night
Partly cloudy, with a low around 63.
Tuesday
A chance of showers. Mostly sunny, with a high near 90. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Williamsport PA
 41.22°N 77°W (Elev. 1247 ft)
Last Update:
5:56 am EDT May 13, 2026
Forecast Valid:
6am EDT May 13, 2026-6pm EDT May 19, 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