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

Somerset County Airport (K2G9)

Lat: 40.04°NLon: 79.02°WElev: 2275ft.

Fair

66°F

19°C

Humidity 88%
Wind Speed SW 6 mph
Barometer 30.07 in
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 17 Aug 6:35 am EDT
Extended Forecast for

Addison PA

  • Today

    Today: A slight chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 84. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Mostly Sunny
    then Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before 10pm, then a slight chance of showers between 10pm and 2am. Patchy dense fog before 1am, then patchy dense fog after 2am. Otherwise, mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Showers
    Likely and
    Patchy Fog
    then Patchy
    Dense Fog

  • Monday

    Monday: A chance of showers between 8am and 5pm, then a chance of showers and thunderstorms after 5pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 77. Light northeast wind. Chance of precipitation is 30%.

    High: 77 °F

    Chance
    Showers and
    Patchy Fog

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 79. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 79 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.

    High: 80 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.

    Low: 63 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78. Chance of precipitation is 50%.

    High: 78 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

Today
A slight chance of showers before 2pm, then a chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 84. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 10pm, then a slight chance of showers between 10pm and 2am. Patchy dense fog before 1am, then patchy dense fog after 2am. Otherwise, mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers between 8am and 5pm, then a chance of showers and thunderstorms after 5pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 77. Light northeast wind. Chance of precipitation is 30%.
Monday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 20%.
Tuesday
A chance of showers, with thunderstorms also possible after 5pm. Partly sunny, with a high near 79. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Thursday
A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78. Chance of precipitation is 50%.
Thursday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 62. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 81.
Friday Night
Partly cloudy, with a low around 62.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Addison PA
 39.76°N 79.33°W (Elev. 2051 ft)
Last Update:
6:48 am EDT Aug 17, 2025
Forecast Valid:
6am EDT Aug 17, 2025-6pm EDT Aug 23, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation