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

39°F

4°C

Humidity 76%
Wind Speed W 7 mph
Barometer 29.89 in (1013.2 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 5 Apr 10:56 pm EDT
Extended Forecast for

Mongaup Valley NY

  • Tonight

    Tonight: Partly cloudy, with a low around 29. West wind around 9 mph, with gusts as high as 20 mph.

    Low: 29 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 47. Northwest wind around 10 mph, with gusts as high as 22 mph.

    High: 47 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of rain and snow showers before 2am, then a chance of snow showers. Mostly cloudy, with a low around 29. Light west wind. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Chance
    Rain/Snow

  • Tuesday

    Tuesday: A slight chance of snow showers, mixing with rain after 8am, then gradually ending. Mostly sunny, with a high near 39. Northwest wind 8 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 39 °F

    Slight Chance
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 18. Northwest wind 3 to 7 mph.

    Low: 18 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 48.

    High: 48 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 34.

    Low: 34 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 29. West wind around 9 mph, with gusts as high as 20 mph.
Monday
Mostly sunny, with a high near 47. Northwest wind around 10 mph, with gusts as high as 22 mph.
Monday Night
A chance of rain and snow showers before 2am, then a chance of snow showers. Mostly cloudy, with a low around 29. Light west wind. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Tuesday
A slight chance of snow showers, mixing with rain after 8am, then gradually ending. Mostly sunny, with a high near 39. Northwest wind 8 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 18. Northwest wind 3 to 7 mph.
Wednesday
Sunny, with a high near 48.
Wednesday Night
Mostly clear, with a low around 25.
Thursday
Mostly sunny, with a high near 56.
Thursday Night
Partly cloudy, with a low around 34.
Friday
Partly sunny, with a high near 66.
Friday Night
Mostly cloudy, with a low around 44.
Saturday
Partly sunny, with a high near 65.
Saturday Night
Mostly cloudy, with a low around 40.
Sunday
Partly sunny, with a high near 65.
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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:
7:08 pm EDT Apr 5, 2026
Forecast Valid:
11pm EDT Apr 5, 2026-6pm EDT Apr 12, 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