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

Flooding Risks from Tropical Moisture Across the Southeast and Southwest

Tropical moisture from Isaias and Rachel will impact portions of the Southeast and Southwest this weekend. Flash flooding, strong winds and even a threat for severe thunderstorms and tornadoes are possible. Meanwhile, strong winds and dry fuels are raising fire weather concerns across the central Great Basin and western High Plains. Across the northern Rockies, first winter storm of the season. Read More >

Current conditions at

Williamsport - Lycoming County Airport (KIPT)

Lat: 41.24°NLon: 76.92°WElev: 522ft.

Fair

42°F

6°C

Humidity 92%
Wind Speed Calm
Barometer 30.42 in (1030.4 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Last update 10 Oct 7:54 am EDT
Extended Forecast for

Montoursville PA

  • Today

    Today: Mostly cloudy, with a high near 68. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 68 °F

    Mostly Cloudy

  • Tonight

    Tonight: A chance of rain, mainly after 5am. Mostly cloudy, with a low around 51. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Mostly Cloudy
    then Chance
    Rain

  • Sunday

    Sunday: Rain, with thunderstorms also possible after 2pm. High near 61. East wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 61 °F

    Rain Likely
    then Rain

  • Sunday Night

    Sunday Night: Rain likely and possibly a thunderstorm before 2am, then a slight chance of rain. Cloudy, with a low around 57. East wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Rain Likely

  • Columbus Day

    Columbus Day: Partly sunny, with a high near 73. Northwest wind 7 to 10 mph.

    High: 73 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 74. Chance of precipitation is 50%.

    High: 74 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.

    Low: 53 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 68. Calm wind becoming southeast around 5 mph in the afternoon.
Tonight
A chance of rain, mainly after 5am. Mostly cloudy, with a low around 51. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Rain, with thunderstorms also possible after 2pm. High near 61. East wind 7 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Sunday Night
Rain likely and possibly a thunderstorm before 2am, then a slight chance of rain. Cloudy, with a low around 57. East wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Columbus Day
Partly sunny, with a high near 73. Northwest wind 7 to 10 mph.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
A chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 74. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 44.
Thursday
A chance of showers. Mostly sunny, with a high near 64. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 47. Chance of precipitation is 40%.
Friday
A chance of showers. Mostly cloudy, with a high near 63. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Montoursville PA
 41.26°N 76.93°W (Elev. 531 ft)
Last Update:
8:41 am EDT Oct 10, 2026
Forecast Valid:
8am EDT Oct 10, 2026-6pm EDT Oct 16, 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