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.

Fair

23°F

-5°C

Humidity 74%
Wind Speed W 5 mph
Barometer 30.47 in (1033.7 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill17°F (-8°C)
Last update 29 Mar 1:56 am EDT
Extended Forecast for

Mongaup Valley NY

  • Overnight

    Overnight: Partly cloudy, with a low around 20. Calm wind.

    Low: 20 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 50. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.

    High: 50 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 34. South wind around 5 mph.

    Low: 34 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 57. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.

    High: 57 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 45. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.

    Low: 45 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, mainly before 2pm. Mostly cloudy, with a high near 68. Chance of precipitation is 30%.

    High: 68 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of rain after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.

    Low: 53 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday

    Wednesday: Rain likely, mainly after 2pm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.

    High: 65 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: Rain likely before 2am, then a chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 60%.

    Low: 32 °F

    Rain Likely
    then Chance
    Rain/Snow

Detailed Forecast

Overnight
Partly cloudy, with a low around 20. Calm wind.
Sunday
Mostly sunny, with a high near 50. Light south wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Sunday Night
Partly cloudy, with a low around 34. South wind around 5 mph.
Monday
Partly sunny, with a high near 57. Southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Monday Night
A chance of showers. Mostly cloudy, with a low around 45. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Tuesday
A chance of showers, mainly before 2pm. Mostly cloudy, with a high near 68. Chance of precipitation is 30%.
Tuesday Night
A chance of rain after 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.
Wednesday
Rain likely, mainly after 2pm. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.
Wednesday Night
Rain likely before 2am, then a chance of rain and snow. Mostly cloudy, with a low around 32. Chance of precipitation is 60%.
Thursday
A chance of rain and snow before 2pm, then a chance of rain. Mostly cloudy, with a high near 44. Chance of precipitation is 40%.
Thursday Night
Rain, snow, and freezing rain likely. Mostly cloudy, with a low around 30. Chance of precipitation is 60%.
Friday
Rain, snow, and freezing rain likely. Mostly cloudy, with a high near 43. Chance of precipitation is 60%.
Friday Night
Rain likely. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Saturday
A chance of rain. Mostly cloudy, with a high near 50. Chance of precipitation is 40%.
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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:
3:22 pm EDT Mar 28, 2026
Forecast Valid:
2am EDT Mar 29, 2026-6pm EDT Apr 4, 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