Tropical Moisture Brings Heavy Rain to Southwest; Strong Coastal Low to Impact the East Coast

Deep tropical moisture surging into the Southwest U.S. will lead to widespread showers and thunderstorms capable of producing flash flooding the next several days. A strong coastal low will develop late Friday and is expected to bring flooding, high surf, dangerous rip currents, gusty winds and heavy rain to much of the U.S. East Coast through early next week. Read More >

Current conditions at

Williamsport - Lycoming County Airport (KIPT)

Lat: 41.24°NLon: 76.92°WElev: 522ft.

Fair

47°F

8°C

Humidity 63%
Wind Speed Calm
Barometer 30.45 in (1031.5 mb)
Dewpoint 35°F (2°C)
Visibility 10.00 mi
Last update 9 Oct 7:54 pm EDT
Extended Forecast for

South Williamsport PA

Freeze Warning October 9, 11:00pm until October 10, 09:00am
Click here for hazard details and duration
Freeze Warning
  • Tonight

    Tonight: Widespread frost, mainly after 4am.  Otherwise, clear, with a low around 31. Northeast wind around 5 mph becoming calm  in the evening.

    Low: 31 °F

    Clear then
    Frost

  • Friday

    Friday: Widespread frost before 9am.  Otherwise, sunny, with a high near 64. Light and variable wind becoming south 6 to 11 mph in the morning.

    High: 64 °F

    Frost then
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 43. Southeast wind 3 to 7 mph.

    Low: 43 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of rain after 2pm.  Partly sunny, with a high near 67. Calm wind becoming southeast 5 to 7 mph in the afternoon.  Chance of precipitation is 30%.

    High: 67 °F

    Mostly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly after 8pm.  Mostly cloudy, with a low around 52. East wind 6 to 8 mph.  Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 52 °F

    Rain Likely

  • Sunday

    Sunday: Rain likely.  Cloudy, with a high near 64. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 64 °F

    Rain Likely

  • Sunday Night

    Sunday Night: Rain likely.  Mostly cloudy, with a low around 49. Chance of precipitation is 70%.

    Low: 49 °F

    Rain Likely

  • Columbus Day

    Columbus Day: A chance of rain.  Mostly cloudy, with a high near 62. Chance of precipitation is 50%.

    High: 62 °F

    Chance Rain

  • Monday Night

    Monday Night: A chance of rain before 2am.  Mostly cloudy, with a low around 51. Chance of precipitation is 30%.

    Low: 51 °F

    Chance Rain

Detailed Forecast

Tonight
Widespread frost, mainly after 4am. Otherwise, clear, with a low around 31. Northeast wind around 5 mph becoming calm in the evening.
Friday
Widespread frost before 9am. Otherwise, sunny, with a high near 64. Light and variable wind becoming south 6 to 11 mph in the morning.
Friday Night
Mostly clear, with a low around 43. Southeast wind 3 to 7 mph.
Saturday
A chance of rain after 2pm. Partly sunny, with a high near 67. Calm wind becoming southeast 5 to 7 mph in the afternoon. Chance of precipitation is 30%.
Saturday Night
Rain likely, mainly after 8pm. Mostly cloudy, with a low around 52. East wind 6 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Rain likely. Cloudy, with a high near 64. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Rain likely. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.
Columbus Day
A chance of rain. Mostly cloudy, with a high near 62. Chance of precipitation is 50%.
Monday Night
A chance of rain before 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 69.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
Partly sunny, with a high near 67.
Wednesday Night
Partly cloudy, with a low around 46.
Thursday
Mostly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
South Williamsport PA
 41.24°N 76.99°W (Elev. 492 ft)
8:05 pm EDT Oct 9, 2025
8pm EDT Oct 9, 2025-6pm EDT Oct 16, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database