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

Showers and Thunderstorms for the Eastern Third of the Country; Fire Weather Concerns; Flooding Issues for the Great Lakes Region

Showers and thunderstorms will continue along and ahead of a cold front for the eastern third of the country. The rainfall for the Great Lakes region could prolong the ongoing flooding. Much cooler weather will filter in behind this cold front along and east of the Rockies. Where the rain is needed, the Southern High Plains, critical fire weather concerns through this weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Selinsgrove Penn Valley Airport (KSEG)

Lat: 40.82°NLon: 76.87°WElev: 443ft.

Light Rain

43°F

6°C

Humidity 80%
Wind Speed Vrbl 6 G 26 mph
Barometer 29.97 in (1014.8 mb)
Dewpoint 37°F (3°C)
Visibility 5.00 mi
Wind Chill39°F (4°C)
Last update 19 Apr 2:53 pm EDT
Extended Forecast for

3 Miles ENE McAlisterville PA

Freeze Watch April 21, 12:00am until April 21, 09:00am
Click here for hazard details and duration
Freeze Watch

  • Tonight

    Tonight: A chance of rain showers after 1am, mixing with snow after 3am. Increasing clouds, with a low around 37. Northwest wind 6 to 11 mph becoming light southwest. Winds could gust as high as 23 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Mostly Clear
    then Chance
    Rain/Snow

  • Monday

    Monday: Mostly sunny, with a high near 47. Northwest wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 47 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Widespread frost after 3am. Otherwise, mostly clear, with a low around 27. Northwest wind around 6 mph becoming calm in the evening.

    Low: 27 °F

    Partly Cloudy
    then Frost

  • Tuesday

    Tuesday: Widespread frost before 7am. Otherwise, sunny, with a high near 56. Calm wind becoming south around 6 mph in the afternoon.

    High: 56 °F

    Frost then
    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 42. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 42 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, mainly before 2pm. Partly sunny, with a high near 67. Chance of precipitation is 30%.

    High: 67 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 44.

    Low: 44 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 49.

    Low: 49 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of rain showers after 1am, mixing with snow after 3am. Increasing clouds, with a low around 37. Northwest wind 6 to 11 mph becoming light southwest. Winds could gust as high as 23 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Monday
Mostly sunny, with a high near 47. Northwest wind 9 to 11 mph, with gusts as high as 22 mph.
Monday Night
Widespread frost after 3am. Otherwise, mostly clear, with a low around 27. Northwest wind around 6 mph becoming calm in the evening.
Tuesday
Widespread frost before 7am. Otherwise, sunny, with a high near 56. Calm wind becoming south around 6 mph in the afternoon.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 42. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Wednesday
A chance of showers, mainly before 2pm. Partly sunny, with a high near 67. Chance of precipitation is 30%.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 73.
Thursday Night
Partly cloudy, with a low around 49.
Friday
Mostly sunny, with a high near 75.
Friday Night
A chance of showers. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.
Saturday
Showers likely. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Sunday
A chance of showers. Mostly cloudy, with a high near 60. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE McAlisterville PA
 40.64°N 77.21°W (Elev. 699 ft)
Last Update:
2:51 pm EDT Apr 19, 2026
Forecast Valid:
3pm EDT Apr 19, 2026-6pm EDT Apr 26, 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