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.

Fair

6°F

-14°C

Humidity 66%
Wind Speed W 5 mph
Barometer 30.28 in (1028.7 mb)
Dewpoint -3°F (-19°C)
Visibility 10.00 mi
Wind Chill-3°F (-19°C)
Last update 20 Jan 6:56 pm EST
Extended Forecast for

Upper Mongaup NY

  • Tonight

    Tonight: Mostly clear, with a low around 4. West wind 3 to 5 mph.

    Low: 4 °F

    Mostly Clear

  • Wednesday

    Wednesday: Increasing clouds, with a high near 25. Wind chill values as low as zero. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

    High: 25 °F

    Increasing
    Clouds

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 21. South wind around 7 mph.

    Low: 21 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 37. West wind 8 to 13 mph, with gusts as high as 26 mph.

    High: 37 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 15. West wind around 7 mph.

    Low: 15 °F

    Partly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 23.

    High: 23 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 1.

    Low: 1 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 11.

    High: 11 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of snow showers after 1am. Mostly cloudy, with a low around 3. Chance of precipitation is 30%.

    Low: 3 °F

    Mostly Cloudy
    then Chance
    Snow Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 4. West wind 3 to 5 mph.
Wednesday
Increasing clouds, with a high near 25. Wind chill values as low as zero. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 20 mph.
Wednesday Night
Mostly cloudy, with a low around 21. South wind around 7 mph.
Thursday
Mostly sunny, with a high near 37. West wind 8 to 13 mph, with gusts as high as 26 mph.
Thursday Night
Partly cloudy, with a low around 15. West wind around 7 mph.
Friday
Partly sunny, with a high near 23.
Friday Night
Partly cloudy, with a low around 1.
Saturday
Partly sunny, with a high near 11.
Saturday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 3. Chance of precipitation is 30%.
Sunday
Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 13. Chance of precipitation is 60%.
Sunday Night
A chance of snow showers. Mostly cloudy, with a low around 4. Chance of precipitation is 40%.
Monday
Partly sunny, with a high near 18.
Monday Night
Partly cloudy, with a low around 5.
Tuesday
Mostly sunny, with a high near 20.
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ABOUT THIS FORECAST

 
Point Forecast:
Upper Mongaup NY
 41.47°N 74.8°W (Elev. 1224 ft)
Last Update:
3:23 pm EST Jan 20, 2026
Forecast Valid:
7pm EST Jan 20, 2026-6pm EST Jan 27, 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