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

Hazardous Weather Conditions

Current conditions at

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7°NLon: 74.8°WElev: 1404ft.

Light Snow

28°F

-2°C

Humidity 72%
Wind Speed W 18 G 25 mph
Barometer 29.82 in (1011.3 mb)
Dewpoint 20°F (-7°C)
Visibility 2.00 mi
Wind Chill15°F (-9°C)
Last update 11 Jan 7:56 pm EST
Extended Forecast for

Upper Mongaup NY

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 23. Breezy, with a northwest wind 15 to 21 mph, with gusts as high as 33 mph.

    Low: 23 °F

    Decreasing
    Clouds and
    Breezy

  • Monday

    Monday: Mostly sunny, with a high near 36. West wind 8 to 10 mph.

    High: 36 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 25. West wind around 6 mph.

    Low: 25 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 40. West wind 3 to 6 mph.

    High: 40 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31. South wind around 7 mph.

    Low: 31 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers. Cloudy, with a high near 42. Chance of precipitation is 40%.

    High: 42 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of rain before midnight, then a chance of rain and snow between midnight and 3am, then a chance of snow after 3am. Cloudy, with a low around 28. Chance of precipitation is 50%.

    Low: 28 °F

    Chance Rain
    then Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of snow. Mostly cloudy, with a high near 33. Chance of precipitation is 50%.

    High: 33 °F

    Chance Snow

  • Thursday Night

    Thursday Night: A chance of snow showers. Mostly cloudy, with a low around 16. Chance of precipitation is 30%.

    Low: 16 °F

    Chance Snow
    Showers

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 23. Breezy, with a northwest wind 15 to 21 mph, with gusts as high as 33 mph.
Monday
Mostly sunny, with a high near 36. West wind 8 to 10 mph.
Monday Night
Partly cloudy, with a low around 25. West wind around 6 mph.
Tuesday
Mostly sunny, with a high near 40. West wind 3 to 6 mph.
Tuesday Night
Mostly cloudy, with a low around 31. South wind around 7 mph.
Wednesday
A chance of showers. Cloudy, with a high near 42. Chance of precipitation is 40%.
Wednesday Night
A chance of rain before midnight, then a chance of rain and snow between midnight and 3am, then a chance of snow after 3am. Cloudy, with a low around 28. Chance of precipitation is 50%.
Thursday
A chance of snow. Mostly cloudy, with a high near 33. Chance of precipitation is 50%.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 16. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 26.
Friday Night
Partly cloudy, with a low around 16.
Saturday
Mostly sunny, with a high near 30.
Saturday Night
Mostly cloudy, with a low around 19.
Sunday
A chance of snow showers. Partly sunny, with a high near 30. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Upper Mongaup NY
 41.47°N 74.8°W (Elev. 1224 ft)
Last Update:
3:22 pm EST Jan 11, 2026
Forecast Valid:
8pm EST Jan 11, 2026-6pm EST Jan 18, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation