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.

Overcast

37°F

3°C

Humidity 67%
Wind Speed SW 6 mph
Barometer 29.53 in (1001.8 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 25 Feb 2:56 pm EST
Extended Forecast for

Mongaup Valley NY

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 39. Southwest wind around 8 mph.

    High: 39 °F

    Partly Sunny

  • Tonight

    Tonight: A chance of snow showers between 8pm and midnight. Partly cloudy, with a low around 18. Southwest wind around 6 mph becoming west after midnight. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    Low: 18 °F

    Chance Snow
    Showers then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 33. West wind 3 to 6 mph.

    High: 33 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 12. Calm wind.

    Low: 12 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 41. Calm wind becoming south around 5 mph in the afternoon.

    High: 41 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 46.

    High: 46 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of snow. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.

    Low: 22 °F

    Chance Snow

  • Sunday

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

    High: 30 °F

    Chance Snow

Detailed Forecast

This Afternoon
Partly sunny, with a high near 39. Southwest wind around 8 mph.
Tonight
A chance of snow showers between 8pm and midnight. Partly cloudy, with a low around 18. Southwest wind around 6 mph becoming west after midnight. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Thursday
Mostly sunny, with a high near 33. West wind 3 to 6 mph.
Thursday Night
Mostly clear, with a low around 12. Calm wind.
Friday
Sunny, with a high near 41. Calm wind becoming south around 5 mph in the afternoon.
Friday Night
Mostly clear, with a low around 24.
Saturday
Mostly sunny, with a high near 46.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.
Sunday
A chance of snow. Mostly cloudy, with a high near 30. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 9.
Monday
A chance of snow. Partly sunny, with a high near 22. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 3.
Tuesday
A chance of snow. Mostly cloudy, with a high near 30. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mongaup Valley NY
 41.65°N 74.79°W (Elev. 1181 ft)
Last Update:
3:22 pm EST Feb 25, 2026
Forecast Valid:
3pm EST Feb 25, 2026-6pm EST Mar 3, 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