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.

Fair

28°F

-2°C

Humidity 66%
Wind Speed N 5 mph
Barometer 29.90 in (1014.0 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 26 Feb 8:56 pm EST
Extended Forecast for

Mongaup Valley NY

  • Tonight

    Tonight: Mostly clear, with a low around 13. Calm wind.

    Low: 13 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 43. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 43 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26. Light south wind.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 48. Light and variable wind becoming southwest around 6 mph in the morning.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of snow after 1am. Mostly cloudy, with a low around 23. Light northwest wind. Chance of precipitation is 20%.

    Low: 23 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A chance of snow before 1pm. Partly sunny, with a high near 30. Chance of precipitation is 30%.

    High: 30 °F

    Chance Snow

  • Sunday Night

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

    Low: 8 °F

    Partly Cloudy

  • Monday

    Monday: A chance of snow. Mostly cloudy, with a high near 25. Chance of precipitation is 30%.

    High: 25 °F

    Chance Snow

  • Monday Night

    Monday Night: Mostly clear, with a low around 8.

    Low: 8 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 13. Calm wind.
Friday
Sunny, with a high near 43. Calm wind becoming southwest around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 26. Light south wind.
Saturday
Mostly sunny, with a high near 48. Light and variable wind becoming southwest around 6 mph in the morning.
Saturday Night
A slight chance of snow after 1am. Mostly cloudy, with a low around 23. Light northwest wind. Chance of precipitation is 20%.
Sunday
A chance of snow before 1pm. Partly sunny, with a high near 30. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 8.
Monday
A chance of snow. Mostly cloudy, with a high near 25. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 8.
Tuesday
Partly sunny, with a high near 34.
Tuesday Night
A chance of rain and snow. Mostly cloudy, with a low around 22. Chance of precipitation is 40%.
Wednesday
A chance of rain. Mostly cloudy, with a high near 43. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.
Thursday
A chance of rain. Mostly cloudy, with a high near 45. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mongaup Valley NY
 41.65°N 74.79°W (Elev. 1181 ft)
Last Update:
6:25 pm EST Feb 26, 2026
Forecast Valid:
9pm EST Feb 26, 2026-6pm EST Mar 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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