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.

Fair

44°F

7°C

Humidity 63%
Wind Speed Calm
Barometer 30.00 in (1016.3 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 9 Mar 10:56 pm EDT
Extended Forecast for

Mongaup Valley NY

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, clear, with a low around 37. Calm wind.

    Low: 37 °F

    Patchy Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, sunny, with a high near 68. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 68 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 4am. Otherwise, partly cloudy, with a low around 47. Calm wind.

    Low: 47 °F

    Partly Cloudy
    then Patchy
    Fog

  • Wednesday

    Wednesday: Showers likely, mainly after 2pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 68. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Slight Chance
    Showers and
    Patchy Fog
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers, with thunderstorms also possible after 2am. Low around 39. South wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.

    Low: 39 °F

    Showers

  • Thursday

    Thursday: A chance of rain and snow showers before 2pm, then a chance of snow showers. Mostly cloudy, with a high near 44. Chance of precipitation is 40%.

    High: 44 °F

    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow after 2pm. Partly sunny, with a high near 40. Chance of precipitation is 40%.

    High: 40 °F

    Mostly Sunny
    then Chance
    Snow

  • Friday Night

    Friday Night: A chance of rain and snow before 2am. Mostly cloudy, with a low around 27. Chance of precipitation is 40%.

    Low: 27 °F

    Chance
    Rain/Snow

Detailed Forecast

Tonight
Patchy fog after 4am. Otherwise, clear, with a low around 37. Calm wind.
Tuesday
Patchy fog before 9am. Otherwise, sunny, with a high near 68. Calm wind becoming west 5 to 7 mph in the afternoon.
Tuesday Night
Patchy fog after 4am. Otherwise, partly cloudy, with a low around 47. Calm wind.
Wednesday
Showers likely, mainly after 2pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 68. Light southeast wind becoming south 5 to 10 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers, with thunderstorms also possible after 2am. Low around 39. South wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Thursday
A chance of rain and snow showers before 2pm, then a chance of snow showers. Mostly cloudy, with a high near 44. Chance of precipitation is 40%.
Thursday Night
Partly cloudy, with a low around 22.
Friday
A chance of snow after 2pm. Partly sunny, with a high near 40. Chance of precipitation is 40%.
Friday Night
A chance of rain and snow before 2am. Mostly cloudy, with a low around 27. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 41.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 49. Chance of precipitation is 40%.
Sunday Night
Rain likely. Mostly cloudy, with a low around 31. Chance of precipitation is 70%.
Monday
Rain and snow likely. Mostly cloudy, with a high near 44. Chance of precipitation is 60%.
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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:
7:02 pm EDT Mar 9, 2026
Forecast Valid:
11pm EDT Mar 9, 2026-6pm EDT Mar 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation