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.

A Few Clouds

29°F

-2°C

Humidity 96%
Wind Speed E 3 mph
Barometer 30.24 in (1025.3 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Last update 9 Jan 2:56 am EST
Extended Forecast for

Upper Mongaup NY

  • Overnight

    Overnight: Mostly cloudy, with a low around 25. Calm wind.

    Low: 25 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers, mainly after 3pm. Increasing clouds, with a high near 48. South wind 6 to 9 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Mostly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers, mainly before 7pm. Cloudy, with a low around 32. South wind 7 to 11 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 32 °F

    Chance
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Rain, mainly after 1pm. High near 39. Northwest wind around 5 mph becoming calm. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 39 °F

    Cloudy then
    Rain

  • Saturday Night

    Saturday Night: Rain, mainly before 1am, then a chance of showers after 1am. Low around 33. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.

    Low: 33 °F

    Rain

  • Sunday

    Sunday: A slight chance of rain and snow showers before 4pm, then a slight chance of snow showers. Partly sunny, with a high near 39. Chance of precipitation is 20%.

    High: 39 °F

    Slight Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 24. Blustery.

    Low: 24 °F

    Mostly Cloudy
    and Blustery

  • Monday

    Monday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 25. Calm wind.
Friday
A chance of showers, mainly after 3pm. Increasing clouds, with a high near 48. South wind 6 to 9 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A chance of showers, mainly before 7pm. Cloudy, with a low around 32. South wind 7 to 11 mph becoming northwest after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Rain, mainly after 1pm. High near 39. Northwest wind around 5 mph becoming calm. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Rain, mainly before 1am, then a chance of showers after 1am. Low around 33. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%.
Sunday
A slight chance of rain and snow showers before 4pm, then a slight chance of snow showers. Partly sunny, with a high near 39. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 24. Blustery.
Monday
Mostly sunny, with a high near 34.
Monday Night
Partly cloudy, with a low around 25.
Tuesday
Mostly sunny, with a high near 40.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
Mostly cloudy, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
Partly sunny, with a high near 32.
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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:
1:02 am EST Jan 9, 2026
Forecast Valid:
3am EST Jan 9, 2026-6pm EST Jan 15, 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