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.

Fair

29°F

-2°C

Humidity 69%
Wind Speed W 3 mph
Barometer 30.30 in (1027.5 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 25 Mar 3:56 am EDT
Extended Forecast for

Upper Mongaup NY

  • Today

    Today: Partly sunny, with a high near 50. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 50 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. South wind around 6 mph.

    Low: 36 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of rain after 2pm. Partly sunny, with a high near 63. Southwest wind 7 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.

    High: 63 °F

    Partly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain, mainly after 8pm. Low around 39. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Rain

  • Friday

    Friday: Rain, mainly before 8am. High near 44. Northwest wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.

    High: 44 °F

    Rain then
    Slight Chance
    Rain

  • Friday Night

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

    Low: 21 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 37.

    High: 37 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

Detailed Forecast

Today
Partly sunny, with a high near 50. Calm wind becoming south 5 to 8 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 36. South wind around 6 mph.
Thursday
A chance of rain after 2pm. Partly sunny, with a high near 63. Southwest wind 7 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 30%.
Thursday Night
Rain, mainly after 8pm. Low around 39. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Rain, mainly before 8am. High near 44. Northwest wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 80%.
Friday Night
Mostly clear, with a low around 21.
Saturday
Sunny, with a high near 37.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Sunny, with a high near 46.
Sunday Night
Partly cloudy, with a low around 29.
Monday
Mostly cloudy, with a high near 52.
Monday Night
A chance of rain. Mostly cloudy, with a low around 39. Chance of precipitation is 30%.
Tuesday
A chance of rain. Mostly cloudy, with a high near 57. Chance of precipitation is 30%.
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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:
2:30 am EDT Mar 25, 2026
Forecast Valid:
4am EDT Mar 25, 2026-6pm EDT Mar 31, 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