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.

Overcast

58°F

14°C

Humidity 78%
Wind Speed E 6 mph
Barometer 29.63 in (1003.7 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 26 Mar 7:56 pm EDT
Extended Forecast for

Upper Mongaup NY

  • Tonight

    Tonight: Rain and possibly a thunderstorm before 3am, then rain likely. Low around 39. Southwest wind 10 to 14 mph becoming northwest after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Rain

  • Friday

    Friday: A chance of rain, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 45. North wind 8 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 45 °F

    Chance Rain
    then Partly
    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 21. Northwest wind 5 to 7 mph.

    Low: 21 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 34. Northwest wind around 10 mph, with gusts as high as 21 mph.

    High: 34 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 21. Northwest wind around 5 mph becoming calm in the evening.

    Low: 21 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 33.

    Low: 33 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 57.

    High: 57 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of rain after 2am. Mostly cloudy, with a low around 41. Chance of precipitation is 30%.

    Low: 41 °F

    Mostly Cloudy
    then Chance
    Rain

Detailed Forecast

Tonight
Rain and possibly a thunderstorm before 3am, then rain likely. Low around 39. Southwest wind 10 to 14 mph becoming northwest after midnight. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A chance of rain, mainly before 7am. Cloudy, then gradually becoming mostly sunny, with a high near 45. North wind 8 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Mostly clear, with a low around 21. Northwest wind 5 to 7 mph.
Saturday
Mostly sunny, with a high near 34. Northwest wind around 10 mph, with gusts as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 21. Northwest wind around 5 mph becoming calm in the evening.
Sunday
Partly sunny, with a high near 48.
Sunday Night
Partly cloudy, with a low around 33.
Monday
Partly sunny, with a high near 57.
Monday Night
A chance of rain after 2am. Mostly cloudy, with a low around 41. Chance of precipitation is 30%.
Tuesday
A chance of rain. Mostly cloudy, with a high near 58. Chance of precipitation is 40%.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 47. Chance of precipitation is 50%.
Wednesday
A chance of rain. Mostly cloudy, with a high near 67. Chance of precipitation is 50%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 46. Chance of precipitation is 40%.
Thursday
A chance of rain. Mostly cloudy, with a high near 64. 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:
3:22 pm EDT Mar 26, 2026
Forecast Valid:
8pm EDT Mar 26, 2026-6pm EDT Apr 2, 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