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

Monsoonal Moisture Remains Across the Southwest; Heat Endures for the South and West Coast

Heat concerns remain across portions of the South and West Coast where a few new daily record highs are forecast. Monsoonal moisture transport continues across areas of the Southwest into early next week and may generate flash flooding, especially near recent burn scars. Further east, showers and thunderstorms are expected along and ahead of a cold front from the Plains to the Appalachians. Read More >

Current conditions at

Selinsgrove Penn Valley Airport (KSEG)

Lat: 40.82°NLon: 76.87°WElev: 443ft.

Partly Cloudy

73°F

23°C

Humidity 90%
Wind Speed S 7 mph
Barometer 29.97 in (1014.4 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 27 Jun 12:53 am EDT
Extended Forecast for

Northumberland PA

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Low around 68. Light south wind. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Showers

    Low: 68 °F

  • Monday

    Monday: A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am. Cloudy through mid morning, then gradual clearing, with a high near 82. Northwest wind 6 to 8 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Chance
    Showers then
    Sunny

    High: 82 °F

  • Monday
    Night

    Monday Night: Mostly clear, with a low around 53. Northwest wind 5 to 7 mph becoming calm after midnight.

    Mostly Clear

    Low: 53 °F

  • Tuesday

    Tuesday: Sunny, with a high near 78. Calm wind becoming northwest around 5 mph.

    Sunny

    High: 78 °F

  • Tuesday
    Night

    Tuesday Night: Mostly clear, with a low around 55. Calm wind.

    Mostly Clear

    Low: 55 °F

  • Wednesday

    Wednesday: Sunny, with a high near 85.

    Sunny

    High: 85 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 59.

    Mostly Clear

    Low: 59 °F

  • Thursday

    Thursday: Sunny, with a high near 89.

    Sunny

    High: 89 °F

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 63.

    Mostly Clear

    Low: 63 °F

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 68. Light south wind. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 11am. Cloudy through mid morning, then gradual clearing, with a high near 82. Northwest wind 6 to 8 mph. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Mostly clear, with a low around 53. Northwest wind 5 to 7 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 78. Calm wind becoming northwest around 5 mph.
Tuesday Night
Mostly clear, with a low around 55. Calm wind.
Wednesday
Sunny, with a high near 85.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Sunny, with a high near 89.
Thursday Night
Mostly clear, with a low around 63.
Friday
Sunny and hot, with a high near 95.
Friday Night
A chance of showers. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Saturday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 88. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Sunday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 50%.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
Northumberland PA
 40.89°N 76.79°W (Elev. 482 ft)
Last Update:
1:14 am EDT Jun 27, 2022
Forecast Valid:
1am EDT Jun 27, 2022-6pm EDT Jul 3, 2022
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation