On July 7, 2015, NWS implemented changes to the icons depicted on all of its point-forecast pages. Changes include new icon images with increased clarity, 6-hour increments for rapidly changing weather and new color blocks to highlight forecast hazards.

A page depicting all of the new icon images can be accessed here: www.weather.gov/forecast-icons

Changes to the icons were based on analysis of 6,700 public comments collected in 2014. Also, many of these changes are based on the results of a research project led by the National Center for Atmospheric Research.

Users are encouraged to continue to provide comments regarding these changes via email at icons@noaa.gov. NWS will continue to analyze incoming feedback and refine the icons as necessary. Any substantial change to the icons will be facilitated through the NWS public comment/review process.

Marginal Risk of Severe Storms Northern Plains to Northern Great Lake States

Strong thunderstorms are also possible across the Ohio Valley and the Carolinas. Storms may contain damaging winds and heavy rain. Critical fire weather conditions persist ahead of a cold front moving into the Pacific Northwest. Behind the front, much colder air with high elevation snow will occur.
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Current conditions at

Selinsgrove, Penn Valley Airport (KSEG)

Lat: 40.82°NLon: 76.87°WElev: 449ft.

Mostly Cloudy

75°F

24°C

Humidity 82%
Wind Speed SE 3 mph
Barometer 30.17 in (1021.1 mb)
Dewpoint 69°F (21°C)
Visibility 7.00 mi
Last update 4 Sep 10:53 pm EDT
Extended Forecast for

Northumberland PA

  • Tonight

    Tonight: Isolated showers and thunderstorms before 2am.  Patchy fog after 2am.  Otherwise, cloudy, with a low around 61. Light southeast wind.  Chance of precipitation is 20%.

    Isolated
    T-storms and
    Patchy Fog

    Low: 61 °F

  • Saturday

    Saturday: Patchy fog before 8am.  Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 83. East wind 3 to 5 mph.

    Patchy Fog
    then Mostly
    Sunny

    High: 83 °F

  • Saturday
    Night

    Saturday Night: Mostly clear, with a low around 57. Calm wind.

    Mostly Clear

    Low: 57 °F

  • Sunday

    Sunday: Sunny, with a high near 85. Light south wind.

    Sunny

    High: 85 °F

  • Sunday
    Night

    Sunday Night: Mostly clear, with a low around 59. Calm wind.

    Mostly Clear

    Low: 59 °F

  • Labor
    Day

    Labor Day: Mostly sunny, with a high near 88.

    Mostly Sunny

    High: 88 °F

  • Monday
    Night

    Monday Night: Partly cloudy, with a low around 64.

    Partly Cloudy

    Low: 64 °F

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89.

    Mostly Sunny

    High: 89 °F

  • Tuesday
    Night

    Tuesday Night: Partly cloudy, with a low around 63.

    Partly Cloudy

    Low: 63 °F

Detailed Forecast

Tonight
Isolated showers and thunderstorms before 2am. Patchy fog after 2am. Otherwise, cloudy, with a low around 61. Light southeast wind. Chance of precipitation is 20%.
Saturday
Patchy fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 83. East wind 3 to 5 mph.
Saturday Night
Mostly clear, with a low around 57. Calm wind.
Sunday
Sunny, with a high near 85. Light south wind.
Sunday Night
Mostly clear, with a low around 59. Calm wind.
Labor Day
Mostly sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
A chance of showers and thunderstorms after 11am. Partly sunny, with a high near 86. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Thursday
Scattered showers and thunderstorms. Partly sunny, with a high near 80. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 59.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 75. Chance of precipitation is 30%.
  Click Map For Forecast
Point Forecast:
Northumberland PA
 40.89°N 76.79°W (Elev. 482 ft)
9:59 pm EDT Sep 4, 2015
11pm EDT Sep 4, 2015-6pm EDT Sep 11, 2015
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Graph

National Digital Forecast Database