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.

Overcast

65°F

18°C

Humidity 78%
Wind Speed Calm
Barometer 30.16 in (1021.0 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 15 Jun 3:53 pm EDT
Extended Forecast for

Upper Mongaup NY

  • This Afternoon

    This Afternoon: A slight chance of showers. Mostly cloudy, with a high near 65. Calm wind. Chance of precipitation is 20%.

    High: 65 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers between midnight and 2am. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 55. Calm wind. Chance of precipitation is 20%.

    Low: 55 °F

    Patchy Fog
    then Slight
    Chance
    Showers and
    Patchy Fog

  • Monday

    Monday: Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 68. Light southeast wind.

    High: 68 °F

    Patchy Fog
    then Cloudy

  • Monday Night

    Monday Night: Cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Cloudy

  • Tuesday

    Tuesday: A chance of showers, mainly after 2pm. Cloudy, with a high near 68. Light southeast wind. Chance of precipitation is 50%.

    High: 68 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Showers likely, mainly between 8pm and 2am. Cloudy, with a low around 60. Chance of precipitation is 60%.

    Low: 60 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 40%.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of thunderstorms before 8pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    T-storms then
    Partly Cloudy

  • Juneteenth

    Juneteenth: Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.

    High: 87 °F

    Partly Sunny
    then Showers
    Likely

Detailed Forecast

This Afternoon
A slight chance of showers. Mostly cloudy, with a high near 65. Calm wind. Chance of precipitation is 20%.
Tonight
A slight chance of showers between midnight and 2am. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 55. Calm wind. Chance of precipitation is 20%.
Monday
Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 68. Light southeast wind.
Monday Night
Cloudy, with a low around 56. Calm wind.
Tuesday
A chance of showers, mainly after 2pm. Cloudy, with a high near 68. Light southeast wind. Chance of precipitation is 50%.
Tuesday Night
Showers likely, mainly between 8pm and 2am. Cloudy, with a low around 60. Chance of precipitation is 60%.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 84. Chance of precipitation is 40%.
Wednesday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Juneteenth
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Friday
Mostly sunny, with a high near 78.
Friday Night
Partly cloudy, with a low around 55.
Saturday
Mostly sunny, with a high near 81.
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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:
3:05 pm EDT Jun 15, 2025
Forecast Valid:
3pm EDT Jun 15, 2025-6pm EDT Jun 21, 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