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.

Fog/Mist

32°F

0°C

Humidity 96%
Wind Speed E 9 G 18 mph
Barometer 29.58 in (1003.1 mb)
Dewpoint 31°F (-1°C)
Visibility 6.00 mi
Wind Chill24°F (-4°C)
Last update 20 Feb 2:56 pm EST
Extended Forecast for

Mongaup Valley NY

Winter Weather Advisory February 20, 03:04pm until February 21, 01:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory February 20, 03:04pm until February 21, 01:00am

    NOW until 1:00am Sat

    Winter Weather Advisory

  • This Afternoon

    High: 36 °F

    Chance Rain
    and Patchy
    Fog

  • Tonight

    Tonight: A chance of showers, mainly between 7pm and 11pm. Areas of fog before 11pm. Otherwise, mostly cloudy, with a low around 28. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 28 °F

    Chance
    Showers and
    Areas Fog
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 38. West wind around 6 mph.

    High: 38 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A chance of snow showers after 1am. Mostly cloudy, with a low around 24. Calm wind. Chance of precipitation is 40%. Little or no snow accumulation expected.

    Low: 24 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Sunday

    Sunday: Snow. High near 31. East wind 3 to 7 mph. Chance of precipitation is 80%.

    High: 31 °F

    Snow

  • Sunday Night

    Sunday Night: Snow likely. Cloudy, with a low around 23. Chance of precipitation is 70%.

    Low: 23 °F

    Snow Likely

  • Monday

    Monday: A chance of snow before 1pm. Mostly cloudy, with a high near 33. Chance of precipitation is 50%.

    High: 33 °F

    Chance Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
A chance of rain, mainly before 4pm. Patchy fog. Otherwise, mostly cloudy, with a high near 36. East wind around 7 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A chance of showers, mainly between 7pm and 11pm. Areas of fog before 11pm. Otherwise, mostly cloudy, with a low around 28. Calm wind becoming west around 5 mph after midnight. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly cloudy, with a high near 38. West wind around 6 mph.
Saturday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 24. Calm wind. Chance of precipitation is 40%. Little or no snow accumulation expected.
Sunday
Snow. High near 31. East wind 3 to 7 mph. Chance of precipitation is 80%.
Sunday Night
Snow likely. Cloudy, with a low around 23. Chance of precipitation is 70%.
Monday
A chance of snow before 1pm. Mostly cloudy, with a high near 33. Chance of precipitation is 50%.
Monday Night
Mostly cloudy, with a low around 17.
Tuesday
Partly sunny, with a high near 25.
Tuesday Night
A chance of snow after 1am. Mostly cloudy, with a low around 11. Chance of precipitation is 30%.
Wednesday
Mostly cloudy, with a high near 37.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 40. Chance of precipitation is 30%.
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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:
1:26 pm EST Feb 20, 2026
Forecast Valid:
3pm EST Feb 20, 2026-6pm EST Feb 26, 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