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

40°F

4°C

Humidity 93%
Wind Speed W 6 mph
Barometer 29.82 in (1010.5 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill36°F (2°C)
Last update 21 Mar 6:56 am EDT
Extended Forecast for

Upper Mongaup NY

  • Today

    Today: Mostly sunny, with a high near 49. Northwest wind 7 to 9 mph.

    High: 49 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 36. Light and variable wind.

    Low: 36 °F

    Mostly Cloudy

  • Sunday

    Sunday: Rain likely after 2pm. Mostly cloudy, with a high near 61. Southwest wind 6 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 61 °F

    Mostly Cloudy
    then Rain
    Likely

  • Sunday Night

    Sunday Night: Rain before 5am, then rain and snow likely. Low around 34. West wind around 6 mph becoming north after midnight. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 34 °F

    Rain then
    Rain/Snow

  • Monday

    Monday: Rain and snow showers likely, mainly before 11am. Partly sunny, with a high near 42. Northwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.

    High: 42 °F

    Rain/Snow
    Likely then
    Slight Chance
    Rain/Snow

  • Monday Night

    Monday Night: Mostly clear, with a low around 24.

    Low: 24 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 47.

    High: 47 °F

    Partly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 49. Northwest wind 7 to 9 mph.
Tonight
Mostly cloudy, with a low around 36. Light and variable wind.
Sunday
Rain likely after 2pm. Mostly cloudy, with a high near 61. Southwest wind 6 to 9 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain before 5am, then rain and snow likely. Low around 34. West wind around 6 mph becoming north after midnight. Chance of precipitation is 80%. Little or no snow accumulation expected.
Monday
Rain and snow showers likely, mainly before 11am. Partly sunny, with a high near 42. Northwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%.
Monday Night
Mostly clear, with a low around 24.
Tuesday
Sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
Partly sunny, with a high near 47.
Wednesday Night
Mostly cloudy, with a low around 28.
Thursday
A chance of rain. Mostly cloudy, with a high near 48. Chance of precipitation is 30%.
Thursday Night
Rain and snow likely. Mostly cloudy, with a low around 32. Chance of precipitation is 60%.
Friday
Rain and snow likely. Partly sunny, with a high near 43. Chance of precipitation is 60%.
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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:
6:37 am EDT Mar 21, 2026
Forecast Valid:
7am EDT Mar 21, 2026-6pm EDT Mar 27, 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