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

Selinsgrove Penn Valley Airport (KSEG)

Lat: 40.82°NLon: 76.87°WElev: 443ft.

Fair

42°F

6°C

Humidity 100%
Wind Speed Calm
Barometer 30.43 in (1030.5 mb)
Dewpoint 42°F (6°C)
Visibility 7.00 mi
Last update 10 Oct 7:53 am EDT
Extended Forecast for

Millerstown PA

  • Today

    Today: Partly sunny, with a high near 69. Light and variable wind.

    High: 69 °F

    Partly Sunny

  • Tonight

    Tonight: Rain likely, mainly after 5am. Mostly cloudy, with a low around 52. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 52 °F

    Mostly Cloudy
    then Rain
    Likely

  • Sunday

    Sunday: Periods of rain. High near 63. East wind 3 to 8 mph. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.

    High: 63 °F

    Rain

  • Sunday Night

    Sunday Night: Rain likely, mainly before 2am. Patchy fog after 1am. Otherwise, cloudy, with a low around 58. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 58 °F

    Rain Likely
    and Patchy
    Fog

  • Columbus Day

    Columbus Day: A chance of rain before 8am. Partly sunny, with a high near 73. Calm wind becoming northwest around 6 mph in the morning. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 73 °F

    Chance Rain
    then Partly
    Sunny

  • Monday Night

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

    Low: 56 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 77.

    High: 77 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 69. Light and variable wind.
Tonight
Rain likely, mainly after 5am. Mostly cloudy, with a low around 52. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Periods of rain. High near 63. East wind 3 to 8 mph. Winds could gust as high as 21 mph. Chance of precipitation is 100%. New precipitation amounts between three quarters and one inch possible.
Sunday Night
Rain likely, mainly before 2am. Patchy fog after 1am. Otherwise, cloudy, with a low around 58. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Columbus Day
A chance of rain before 8am. Partly sunny, with a high near 73. Calm wind becoming northwest around 6 mph in the morning. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Partly sunny, with a high near 77.
Tuesday Night
Mostly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 67.
Wednesday Night
Partly cloudy, with a low around 45.
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 48. Chance of precipitation is 30%.
Friday
A chance of showers. Mostly cloudy, with a high near 65. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Millerstown PA
 40.55°N 77.14°W (Elev. 489 ft)
Last Update:
8:52 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