Flooding Concerns in Puerto Rico; Thunderstorms Across the Southeast U.S.

Showers and thunderstorms capable of producing widespread heavy rainfall will be possible across much of Puerto Rico today. Heavy rainfall will likely lead to flash, urban and small stream flooding. Some areas may face life-threatening flooding. In the Southeast U.S., strong to marginally severe thunderstorms will be possible this afternoon. Read More >

Current conditions at

Selinsgrove Penn Valley Airport (KSEG)

Lat: 40.82°NLon: 76.87°WElev: 443ft.

Overcast

52°F

11°C

Humidity 83%
Wind Speed S 6 mph
Barometer 30.02 in (1016.6 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 19 Apr 7:53 pm EDT
Extended Forecast for

Herndon PA

  • Tonight

    Tonight: Scattered showers, mainly before 2am.  Cloudy, with a low around 49. South wind 5 to 9 mph becoming light and variable  after midnight.  Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Scattered
    Showers

    Low: 49 °F

  • Saturday

    Saturday: Mostly sunny, with a high near 61. West wind 5 to 14 mph, with gusts as high as 28 mph.

    Mostly Sunny

    High: 61 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 36. Northwest wind 5 to 11 mph, with gusts as high as 23 mph.

    Mostly Clear

    Low: 36 °F

  • Sunday

    Sunday: Areas of frost before 8am.  Otherwise, mostly sunny, with a high near 57. West wind 5 to 9 mph.

    Areas Frost
    then Mostly
    Sunny

    High: 57 °F

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 37. West wind 5 to 7 mph.

    Mostly Clear

    Low: 37 °F

  • Monday

    Monday: Areas of frost before 7am.  Otherwise, sunny, with a high near 61.

    Areas Frost
    then Sunny

    High: 61 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 37.

    Mostly Clear

    Low: 37 °F

  • Tuesday

    Tuesday: Areas of frost before 7am.  Otherwise, mostly sunny, with a high near 66.

    Areas Frost
    then Partly
    Sunny

    High: 66 °F

  • Tuesday
    Night

    Tuesday Night: A chance of showers after 3am.  Mostly cloudy, with a low around 49. Chance of precipitation is 40%.

    Mostly Cloudy
    then Chance
    Showers

    Low: 49 °F

Detailed Forecast

Tonight
Scattered showers, mainly before 2am. Cloudy, with a low around 49. South wind 5 to 9 mph becoming light and variable after midnight. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly sunny, with a high near 61. West wind 5 to 14 mph, with gusts as high as 28 mph.
Saturday Night
Mostly clear, with a low around 36. Northwest wind 5 to 11 mph, with gusts as high as 23 mph.
Sunday
Areas of frost before 8am. Otherwise, mostly sunny, with a high near 57. West wind 5 to 9 mph.
Sunday Night
Mostly clear, with a low around 37. West wind 5 to 7 mph.
Monday
Areas of frost before 7am. Otherwise, sunny, with a high near 61.
Monday Night
Mostly clear, with a low around 37.
Tuesday
Areas of frost before 7am. Otherwise, mostly sunny, with a high near 66.
Tuesday Night
A chance of showers after 3am. Mostly cloudy, with a low around 49. Chance of precipitation is 40%.
Wednesday
Showers likely, mainly between 9am and 3pm. Mostly cloudy, with a high near 62. Chance of precipitation is 60%.
Wednesday Night
A chance of showers. Mostly clear, with a low around 36. Chance of precipitation is 50%.
Thursday
Sunny, with a high near 57.
Thursday Night
Areas of frost. Otherwise, mostly clear, with a low around 35.
Friday
Areas of frost. Otherwise, sunny, with a high near 63.
Click Map For Forecast
Point Forecast:
Herndon PA
 40.72°N 76.85°W (Elev. 397 ft)
7:09 pm EDT Apr 19, 2024
8pm EDT Apr 19, 2024-6pm EDT Apr 26, 2024
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database