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

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7°NLon: 74.8°WElev: 1404ft.

Mostly Cloudy

30°F

-1°C

Humidity 66%
Wind Speed W 18 G 26 mph
Barometer 29.94 in (1015.3 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 12 Mar 9:56 pm EDT
Extended Forecast for

Upper Mongaup NY

  • Tonight

    Tonight: A chance of flurries before 11pm. Mostly clear, with a low around 23. West wind 6 to 10 mph.

    Low: 23 °F

    Chance
    Flurries

  • Friday

    Friday: A chance of snow, mainly after 3pm. Increasing clouds, with a high near 40. Light southwest wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Mostly Sunny
    then Chance
    Snow

  • Friday Night

    Friday Night: A chance of rain and snow showers before 11pm, then a chance of snow showers between 11pm and 2am. Mostly cloudy, with a low around 30. South wind around 11 mph becoming west 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: 30 °F

    Chance
    Rain/Snow
    then Chance
    Snow Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 43. West wind around 15 mph, with gusts as high as 29 mph.

    High: 43 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 25. Northwest wind around 6 mph becoming calm after midnight.

    Low: 25 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, with a high near 43.

    High: 43 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 35. Chance of precipitation is 90%.

    Low: 35 °F

    Chance Rain
    then Rain

  • Monday

    Monday: Rain. High near 59. Chance of precipitation is 100%.

    High: 59 °F

    Rain

  • Monday Night

    Monday Night: Rain likely before 2am. Mostly cloudy, with a low around 27. Chance of precipitation is 70%.

    Low: 27 °F

    Rain Likely

Detailed Forecast

Tonight
A chance of flurries before 11pm. Mostly clear, with a low around 23. West wind 6 to 10 mph.
Friday
A chance of snow, mainly after 3pm. Increasing clouds, with a high near 40. Light southwest wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Friday Night
A chance of rain and snow showers before 11pm, then a chance of snow showers between 11pm and 2am. Mostly cloudy, with a low around 30. South wind around 11 mph becoming west 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.
Saturday
Mostly sunny, with a high near 43. West wind around 15 mph, with gusts as high as 29 mph.
Saturday Night
Partly cloudy, with a low around 25. Northwest wind around 6 mph becoming calm after midnight.
Sunday
Mostly cloudy, with a high near 43.
Sunday Night
Rain, mainly after 2am. Low around 35. Chance of precipitation is 90%.
Monday
Rain. High near 59. Chance of precipitation is 100%.
Monday Night
Rain likely before 2am. Mostly cloudy, with a low around 27. Chance of precipitation is 70%.
Tuesday
Mostly sunny, with a high near 34.
Tuesday Night
Partly cloudy, with a low around 17.
Wednesday
Sunny, with a high near 33.
Wednesday Night
Mostly cloudy, with a low around 20.
Thursday
Partly sunny, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Upper Mongaup NY
 41.47°N 74.8°W (Elev. 1224 ft)
Last Update:
7:04 pm EDT Mar 12, 2026
Forecast Valid:
10pm EDT Mar 12, 2026-6pm EDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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