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

53°F

12°C

Humidity 93%
Wind Speed NW 3 mph
Barometer 30.12 in (1020.4 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 3 Apr 11:56 pm EDT
Extended Forecast for

Upper Mongaup NY

  • Overnight

    Overnight: Mostly cloudy, with a low around 51. Northwest wind around 6 mph.

    Low: 51 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers, mainly after 3pm. Partly sunny, with a high near 64. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 64 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly after 8pm. Cloudy, with a low around 41. Southeast wind 6 to 11 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 41 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers, mainly before 2pm. High near 59. South wind 6 to 9 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 59 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Mostly cloudy, with a low around 33. West wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.

    Low: 33 °F

    Chance
    Showers then
    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 29.

    Low: 29 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 21.

    Low: 21 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 51. Northwest wind around 6 mph.
Saturday
A chance of showers, mainly after 3pm. Partly sunny, with a high near 64. Calm wind becoming southeast around 6 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Showers likely, mainly after 8pm. Cloudy, with a low around 41. Southeast wind 6 to 11 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Showers, mainly before 2pm. High near 59. South wind 6 to 9 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 33. West wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 47.
Monday Night
Partly cloudy, with a low around 29.
Tuesday
Mostly sunny, with a high near 43.
Tuesday Night
Mostly clear, with a low around 21.
Wednesday
Sunny, with a high near 49.
Wednesday Night
Mostly clear, with a low around 28.
Thursday
Mostly sunny, with a high near 59.
Thursday Night
Partly cloudy, with a low around 38.
Friday
Mostly sunny, with a high near 66.
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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:
3:23 pm EDT Apr 3, 2026
Forecast Valid:
12am EDT Apr 4, 2026-6pm EDT Apr 10, 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