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

Critical Fire Weather Conditions and Severe Thunderstorms Today

Scattered severe thunderstorms are possible across portions of the northern High Plains this afternoon and evening. Severe wind gusts are the primary hazard. Gusty winds and low relative humidity will contribute to critical fire weather conditions across parts of the northern Great Plains and Great Basin today and the southern High Plains on Thursday. Read More >

Hazardous Weather Conditions

Current conditions at

Selinsgrove Penn Valley Airport (KSEG)

Lat: 40.82°NLon: 76.87°WElev: 443ft.

Overcast

61°F

16°C

Humidity 70%
Wind Speed S 14 G 25 mph
Barometer 29.80 in (1008.9 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 13 May 2:53 pm EDT
Extended Forecast for

3 Miles E Northumberland PA

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms before 4pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 68. Southwest wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 68 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 1am, then a slight chance of showers between 1am and 2am. Low around 46. Southwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 46 °F

    Showers then
    Chance
    Showers

  • Thursday

    Thursday: A slight chance of showers after 3pm. Partly sunny, with a high near 60. Northwest wind 6 to 8 mph. Chance of precipitation is 20%.

    High: 60 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Thursday Night

    Thursday Night: A slight chance of showers before 7pm, then a chance of showers after 2am. Mostly cloudy, with a low around 47. Northwest wind 5 to 7 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Mostly Cloudy
    then Chance
    Showers

  • Friday

    Friday: A chance of showers before 8am. Partly sunny, with a high near 69. Northwest wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 69 °F

    Chance
    Showers then
    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 30%.

    High: 81 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms before 4pm, then a chance of showers and thunderstorms after 5pm. Mostly cloudy, with a high near 68. Southwest wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and possibly a thunderstorm before 1am, then a slight chance of showers between 1am and 2am. Low around 46. Southwest wind 5 to 7 mph becoming calm in the evening. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A slight chance of showers after 3pm. Partly sunny, with a high near 60. Northwest wind 6 to 8 mph. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers before 7pm, then a chance of showers after 2am. Mostly cloudy, with a low around 47. Northwest wind 5 to 7 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A chance of showers before 8am. Partly sunny, with a high near 69. Northwest wind around 9 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Partly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
A chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 30%.
Sunday Night
A chance of showers before 8pm. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 85.
Monday Night
Mostly clear, with a low around 63.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.
Wednesday
A chance of showers. Partly sunny, with a high near 85.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Northumberland PA
 40.88°N 76.73°W (Elev. 741 ft)
Last Update:
2:20 pm EDT May 13, 2026
Forecast Valid:
3pm EDT May 13, 2026-6pm EDT May 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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