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

43°F

6°C

Humidity 42%
Wind Speed NW 10 mph
Barometer 30.00 in (1017.1 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 6 Apr 5:56 pm EDT
Extended Forecast for

Upper Mongaup NY

  • Tonight

    Tonight: A slight chance of rain and snow showers before 9pm, then a chance of snow showers. Mostly cloudy, with a low around 32. Northwest wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 32 °F

    Slight Chance
    Rain/Snow
    then Chance
    Snow Showers

  • Tuesday

    Tuesday: A slight chance of snow showers before 7am, then a slight chance of snow showers after 2pm. Partly sunny, with a high near 42. Northwest wind 13 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.

    High: 42 °F

    Partly Sunny
    then Slight
    Chance Snow
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 21. Northwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 21 mph.

    Low: 21 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 47. Calm wind becoming south around 6 mph in the afternoon.

    High: 47 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 25. Light south wind.

    Low: 25 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 44.

    Low: 44 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of rain and snow showers before 9pm, then a chance of snow showers. Mostly cloudy, with a low around 32. Northwest wind 5 to 8 mph becoming calm in the evening. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.
Tuesday
A slight chance of snow showers before 7am, then a slight chance of snow showers after 2pm. Partly sunny, with a high near 42. Northwest wind 13 to 16 mph, with gusts as high as 32 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 21. Northwest wind 5 to 10 mph becoming light after midnight. Winds could gust as high as 21 mph.
Wednesday
Sunny, with a high near 47. Calm wind becoming south around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 25. Light south wind.
Thursday
Mostly sunny, with a high near 54.
Thursday Night
Partly cloudy, with a low around 31.
Friday
Sunny, with a high near 65.
Friday Night
Partly cloudy, with a low around 44.
Saturday
Mostly sunny, with a high near 61.
Saturday Night
Mostly clear, with a low around 35.
Sunday
Mostly sunny, with a high near 61.
Sunday Night
Mostly cloudy, with a low around 44.
Monday
Mostly cloudy, with a high near 70.
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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:
5:06 pm EDT Apr 6, 2026
Forecast Valid:
6pm EDT Apr 6, 2026-6pm EDT Apr 13, 2026
 
Forecast Discussion
 
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Additional Resources

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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