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.

Light Rain

48°F

9°C

Humidity 80%
Wind Speed S 7 mph
Barometer 29.77 in (1009.3 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 20 Mar 3:56 pm EDT
Extended Forecast for

Mongaup Valley NY

  • This Afternoon

    This Afternoon: Rain, mainly after 5pm. High near 53. South wind around 9 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 53 °F

    Rain

  • Tonight

    Tonight: Rain before 1am, then a slight chance of showers between 1am and 2am. Low around 33. Southwest wind around 6 mph becoming light and variable. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 33 °F

    Rain then
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 49. Northwest wind around 8 mph.

    High: 49 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 34. Calm wind.

    Low: 34 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 59. Southwest wind 3 to 8 mph. Chance of precipitation is 50%.

    High: 59 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Sunday Night

    Sunday Night: Rain likely. Mostly cloudy, with a low around 35. Chance of precipitation is 70%.

    Low: 35 °F

    Rain Likely

  • Monday

    Monday: A chance of rain and snow showers before 2pm. Mostly cloudy, with a high near 44. Chance of precipitation is 30%.

    High: 44 °F

    Chance
    Rain/Snow

  • Monday Night

    Monday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Rain, mainly after 5pm. High near 53. South wind around 9 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain before 1am, then a slight chance of showers between 1am and 2am. Low around 33. Southwest wind around 6 mph becoming light and variable. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly sunny, with a high near 49. Northwest wind around 8 mph.
Saturday Night
Increasing clouds, with a low around 34. Calm wind.
Sunday
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 59. Southwest wind 3 to 8 mph. Chance of precipitation is 50%.
Sunday Night
Rain likely. Mostly cloudy, with a low around 35. Chance of precipitation is 70%.
Monday
A chance of rain and snow showers before 2pm. Mostly cloudy, with a high near 44. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 22.
Tuesday
Mostly sunny, with a high near 44.
Tuesday Night
A chance of snow showers after 2am. Mostly cloudy, with a low around 27. Chance of precipitation is 30%.
Wednesday
A chance of snow showers. Partly sunny, with a high near 42. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
Mostly sunny, with a high near 50.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mongaup Valley NY
 41.65°N 74.79°W (Elev. 1181 ft)
Last Update:
3:22 pm EDT Mar 20, 2026
Forecast Valid:
4pm EDT Mar 20, 2026-6pm EDT Mar 26, 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