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.

Overcast

30°F

-1°C

Humidity 88%
Wind Speed Vrbl 3 mph
Barometer 29.93 in (1015.5 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 17 Jan 2:56 pm EST
Extended Forecast for

Upper Mongaup NY

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 33. Southwest wind around 6 mph.

    High: 33 °F

    Partly Sunny

  • Tonight

    Tonight: A chance of snow after 4am. Increasing clouds, with a low around 25. Calm wind. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Low: 25 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Snow likely before 2pm, then light snow likely, mainly between 2pm and 5pm. Cloudy, with a high near 30. Calm wind becoming northwest 5 to 7 mph in the afternoon. Chance of precipitation is 70%. New snow accumulation of around 2 inches.

    High: 30 °F

    Snow Likely

  • Sunday Night

    Sunday Night: A chance of light snow before 7pm. Mostly cloudy, with a low around 15. Northwest wind around 6 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 15 °F

    Chance Light
    Snow then
    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: Partly sunny, with a high near 27. Southwest wind 6 to 14 mph, with gusts as high as 26 mph.

    High: 27 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 8.

    Low: 8 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 17.

    High: 17 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 5.

    Low: 5 °F

    Mostly Clear

  • Wednesday

    Wednesday: Partly sunny, with a high near 26.

    High: 26 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Partly sunny, with a high near 33. Southwest wind around 6 mph.
Tonight
A chance of snow after 4am. Increasing clouds, with a low around 25. Calm wind. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Sunday
Snow likely before 2pm, then light snow likely, mainly between 2pm and 5pm. Cloudy, with a high near 30. Calm wind becoming northwest 5 to 7 mph in the afternoon. Chance of precipitation is 70%. New snow accumulation of around 2 inches.
Sunday Night
A chance of light snow before 7pm. Mostly cloudy, with a low around 15. Northwest wind around 6 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
M.L.King Day
Partly sunny, with a high near 27. Southwest wind 6 to 14 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 8.
Tuesday
Mostly sunny, with a high near 17.
Tuesday Night
Mostly clear, with a low around 5.
Wednesday
Partly sunny, with a high near 26.
Wednesday Night
Mostly cloudy, with a low around 18.
Thursday
Partly sunny, with a high near 31.
Thursday Night
Partly cloudy, with a low around 10.
Friday
Mostly sunny, with a high near 24.
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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:
3:23 pm EST Jan 17, 2026
Forecast Valid:
3pm EST Jan 17, 2026-6pm EST Jan 23, 2026
 
Forecast Discussion
 
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Additional Resources

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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