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

40°F

4°C

Humidity 65%
Wind Speed NW 10 mph
Barometer 29.96 in (1015.4 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill34°F (1°C)
Last update 21 Mar 5:56 pm EDT
Extended Forecast for

Upper Mongaup NY

  • Tonight

    Tonight: Cloudy, with a low around 36. Light and variable wind.

    Low: 36 °F

    Cloudy

  • Sunday

    Sunday: A chance of drizzle before 2pm, then a chance of showers, mainly after 4pm. Partly sunny, with a high near 61. South wind 6 to 8 mph becoming west in the afternoon. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers. Low around 34. Northwest wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 34 °F

    Showers

  • Monday

    Monday: Rain and snow showers likely before 11am, then a slight chance of snow showers between 11am and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 43. Northwest wind 9 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 43 °F

    Rain/Snow
    Likely then
    Slight Chance
    Snow Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 24. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 24 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 29.

    Low: 29 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 49.

    High: 49 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Cloudy, with a low around 36. Light and variable wind.
Sunday
A chance of drizzle before 2pm, then a chance of showers, mainly after 4pm. Partly sunny, with a high near 61. South wind 6 to 8 mph becoming west in the afternoon. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Showers. Low around 34. Northwest wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Rain and snow showers likely before 11am, then a slight chance of snow showers between 11am and 2pm. Mostly cloudy, then gradually becoming sunny, with a high near 43. Northwest wind 9 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Monday Night
Mostly clear, with a low around 24. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 29.
Wednesday
Partly sunny, with a high near 49.
Wednesday Night
Mostly cloudy, with a low around 30.
Thursday
A chance of rain. Mostly cloudy, with a high near 51. Chance of precipitation is 30%.
Thursday Night
Rain and snow likely. Mostly cloudy, with a low around 33. Chance of precipitation is 70%.
Friday
A chance of rain and snow. Mostly sunny, with a high near 43. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 21.
Saturday
Sunny, with a high near 41.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Upper Mongaup NY
 41.47°N 74.8°W (Elev. 1224 ft)
Last Update:
3:45 pm EDT Mar 21, 2026
Forecast Valid:
6pm EDT Mar 21, 2026-6pm EDT Mar 28, 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