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

Sussex, Sussex Airport (KFWN)

Lat: 41.2°NLon: 74.63°WElev: 410ft.

Mostly Cloudy

74°F

23°C

Humidity 74%
Wind Speed N 9 mph
Barometer 30.07 in (1017.8 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 26 Jun 7:53 am EDT
Extended Forecast for

Upper Mongaup NY

  • Today

    Today: A chance of showers and thunderstorms, mainly after 3pm. Mostly cloudy, with a high near 77. East wind 3 to 8 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then a slight chance of showers after 3am. Mostly cloudy, with a low around 58. East wind 5 to 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 67. East wind 6 to 8 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 67 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Light southeast wind. Chance of precipitation is 40%.

    Low: 59 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 78. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 70%.

    High: 78 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.

    Low: 64 °F

    Showers
    Likely

  • Sunday

    Sunday: Partly sunny, with a high near 80.

    High: 80 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Monday

    Monday: A chance of showers after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%.

    High: 84 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly after 3pm. Mostly cloudy, with a high near 77. East wind 3 to 8 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 2am, then a slight chance of showers after 3am. Mostly cloudy, with a low around 58. East wind 5 to 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 67. East wind 6 to 8 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Light southeast wind. Chance of precipitation is 40%.
Saturday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 78. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 70%.
Saturday Night
Showers and thunderstorms likely before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 60%.
Sunday
Partly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 62.
Monday
A chance of showers after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 67. Chance of precipitation is 50%.
Tuesday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 84. Chance of precipitation is 70%.
Tuesday Night
A chance of thunderstorms. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Wednesday
Sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Upper Mongaup NY
 41.47°N 74.77°W (Elev. 1201 ft)
Last Update:
6:11 am EDT Jun 26, 2025
Forecast Valid:
7am EDT Jun 26, 2025-6pm EDT Jul 2, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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