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.

Light Rain

33°F

1°C

Humidity 100%
Wind Speed E 8 mph
Barometer 29.92 in (1014.6 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 10 Jan 6:56 pm EST
Extended Forecast for

Mongaup Valley NY

  • Tonight

    Tonight: Showers, mainly before 2am. Low around 31. East wind around 6 mph becoming calm. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 31 °F

    Showers then
    Slight Chance
    Showers

  • Sunday

    Sunday: Increasing clouds, with a high near 36. West wind 8 to 11 mph, with gusts as high as 23 mph.

    High: 36 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 22. Northwest wind 11 to 16 mph, with gusts as high as 34 mph.

    Low: 22 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 35. West wind 7 to 10 mph, with gusts as high as 22 mph.

    High: 35 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 24. West wind around 6 mph.

    Low: 24 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 40.

    High: 40 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 31.

    Low: 31 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers after 1pm. Mostly cloudy, with a high near 41. Chance of precipitation is 30%.

    High: 41 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of snow showers. Mostly cloudy, with a low around 20. Chance of precipitation is 30%.

    Low: 20 °F

    Chance Snow
    Showers

Detailed Forecast

Tonight
Showers, mainly before 2am. Low around 31. East wind around 6 mph becoming calm. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Increasing clouds, with a high near 36. West wind 8 to 11 mph, with gusts as high as 23 mph.
Sunday Night
Mostly cloudy, with a low around 22. Northwest wind 11 to 16 mph, with gusts as high as 34 mph.
Monday
Mostly sunny, with a high near 35. West wind 7 to 10 mph, with gusts as high as 22 mph.
Monday Night
Mostly cloudy, with a low around 24. West wind around 6 mph.
Tuesday
Mostly sunny, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 31.
Wednesday
A chance of showers after 1pm. Mostly cloudy, with a high near 41. Chance of precipitation is 30%.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 20. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 28.
Thursday Night
Partly cloudy, with a low around 12.
Friday
Mostly sunny, with a high near 26.
Friday Night
Mostly cloudy, with a low around 15.
Saturday
Partly sunny, with a high near 31.
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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 Jan 10, 2026
Forecast Valid:
7pm EST Jan 10, 2026-6pm EST Jan 17, 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