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.

Partly Cloudy

53°F

12°C

Humidity 43%
Wind Speed SW 7 mph
Barometer 29.96 in (1015.6 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill51°F (11°C)
Last update 28 Feb 2:56 pm EST
Extended Forecast for

Upper Mongaup NY

  • This Afternoon

    This Afternoon: Sunny, with a high near 48. West wind around 6 mph.

    High: 48 °F

    Sunny

  • Tonight

    Tonight: A chance of snow showers after 5am. Increasing clouds, with a low around 23. Northwest wind 3 to 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 23 °F

    Mostly Clear
    then Chance
    Snow Showers

  • Sunday

    Sunday: Snow showers likely, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 32. Northwest wind 6 to 9 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    High: 32 °F

    Snow Showers
    Likely then
    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 8. Northwest wind 5 to 8 mph.

    Low: 8 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 28. Northwest wind 3 to 5 mph.

    High: 28 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 13.

    Low: 13 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of snow before 1pm, then rain and snow. High near 36. Chance of precipitation is 80%.

    High: 36 °F

    Chance Snow
    then
    Rain/Snow

  • Tuesday Night

    Tuesday Night: Rain. Low around 31. Chance of precipitation is 90%.

    Low: 31 °F

    Rain

  • Wednesday

    Wednesday: A chance of rain. Mostly cloudy, with a high near 46. Chance of precipitation is 30%.

    High: 46 °F

    Chance Rain

Detailed Forecast

This Afternoon
Sunny, with a high near 48. West wind around 6 mph.
Tonight
A chance of snow showers after 5am. Increasing clouds, with a low around 23. Northwest wind 3 to 5 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday
Snow showers likely, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 32. Northwest wind 6 to 9 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Sunday Night
Mostly clear, with a low around 8. Northwest wind 5 to 8 mph.
Monday
Sunny, with a high near 28. Northwest wind 3 to 5 mph.
Monday Night
Mostly clear, with a low around 13.
Tuesday
A chance of snow before 1pm, then rain and snow. High near 36. Chance of precipitation is 80%.
Tuesday Night
Rain. Low around 31. Chance of precipitation is 90%.
Wednesday
A chance of rain. Mostly cloudy, with a high near 46. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 33. Chance of precipitation is 50%.
Thursday
A chance of rain. Mostly cloudy, with a high near 52. Chance of precipitation is 50%.
Thursday Night
Rain likely. Cloudy, with a low around 39. Chance of precipitation is 60%.
Friday
A chance of rain. Mostly cloudy, with a high near 53. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Upper Mongaup NY
 41.47°N 74.8°W (Elev. 1224 ft)
Last Update:
1:30 pm EST Feb 28, 2026
Forecast Valid:
3pm EST Feb 28, 2026-6pm EST Mar 6, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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