Current conditions at

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7°NLon: 74.8°WElev: 1404ft.

Overcast

29°F

-2°C

Humidity 85%
Wind Speed SE 8 mph
Barometer 29.44 in (998.6 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 10 Dec 11:56 am EST
Extended Forecast for

Upper Mongaup NY

Winter Weather Advisory December 10, 12:09pm until December 11, 01:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory December 10, 12:09pm until December 11, 01:00am

    NOW until 1:00am Thu

    Winter Weather Advisory

  • This Afternoon

    High: 35 °F

    Rain/Snow

  • Tonight

    Tonight: A chance of rain and snow showers before 11pm, then a slight chance of rain between 11pm and midnight.  Mostly cloudy, with a low around 20. Southwest wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 22 mph.  Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 20 °F

    Chance
    Rain/Snow
    then Mostly
    Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 27. West wind 14 to 16 mph, with gusts as high as 31 mph.

    High: 27 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 17. West wind 10 to 15 mph, with gusts as high as 30 mph.

    Low: 17 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 29. West wind 6 to 9 mph, with gusts as high as 20 mph.

    High: 29 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of snow showers after 1am.  Mostly cloudy, with a low around 13. Chance of precipitation is 30%.

    Low: 13 °F

    Partly Cloudy
    then Chance
    Snow Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 31.

    High: 31 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A chance of snow showers after 1am.  Mostly cloudy, with a low around 18. Chance of precipitation is 40%.

    Low: 18 °F

    Mostly Cloudy
    then Chance
    Snow Showers

Detailed Forecast

This Afternoon
Snow, possibly mixed with rain. High near 35. South wind around 8 mph. Chance of precipitation is 100%. Total daytime snow accumulation of less than one inch possible.
Tonight
A chance of rain and snow showers before 11pm, then a slight chance of rain between 11pm and midnight. Mostly cloudy, with a low around 20. Southwest wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Thursday
Mostly sunny, with a high near 27. West wind 14 to 16 mph, with gusts as high as 31 mph.
Thursday Night
Partly cloudy, with a low around 17. West wind 10 to 15 mph, with gusts as high as 30 mph.
Friday
Mostly sunny, with a high near 29. West wind 6 to 9 mph, with gusts as high as 20 mph.
Friday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 13. Chance of precipitation is 30%.
Saturday
Mostly cloudy, with a high near 31.
Saturday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 40%.
Sunday
Mostly cloudy, with a high near 26.
Sunday Night
Mostly cloudy, with a low around 11.
Monday
Partly sunny, with a high near 23.
Monday Night
Mostly cloudy, with a low around 11.
Tuesday
Partly sunny, with a high near 28.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Upper Mongaup NY
 41.47°N 74.77°W (Elev. 1201 ft)
11:27 am EST Dec 10, 2025
12pm EST Dec 10, 2025-6pm EST Dec 16, 2025
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database