National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7°NLon: 74.8°WElev: 1404ft.

Overcast

34°F

1°C

Humidity 97%
Wind Speed NW 9 mph
Barometer 29.98 in (1016.3 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 8 Jan 12:56 am EST
Extended Forecast for

Mongaup Valley NY

  • Overnight

    Overnight: Cloudy, with a low around 31. West wind 3 to 5 mph.

    Low: 31 °F

    Cloudy

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 41. Northwest wind around 5 mph becoming calm in the afternoon.

    High: 41 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 26. Calm wind.

    Low: 26 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely after 1pm. Mostly cloudy, with a high near 46. South wind 3 to 8 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    High: 46 °F

    Mostly Cloudy
    then Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers, mainly before 1am. Cloudy, with a low around 35. South wind around 5 mph becoming light and variable after midnight. Chance of precipitation is 40%.

    Low: 35 °F

    Chance
    Showers

  • Saturday

    Saturday: Rain, mainly after 1pm. High near 43. Chance of precipitation is 80%.

    High: 43 °F

    Chance Rain
    then Rain

  • Saturday Night

    Saturday Night: Rain before 1am, then a chance of showers after 1am. Low around 33. Chance of precipitation is 80%.

    Low: 33 °F

    Rain

  • Sunday

    Sunday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Cloudy, with a low around 31. West wind 3 to 5 mph.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 41. Northwest wind around 5 mph becoming calm in the afternoon.
Thursday Night
Mostly cloudy, with a low around 26. Calm wind.
Friday
Showers likely after 1pm. Mostly cloudy, with a high near 46. South wind 3 to 8 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A chance of showers, mainly before 1am. Cloudy, with a low around 35. South wind around 5 mph becoming light and variable after midnight. Chance of precipitation is 40%.
Saturday
Rain, mainly after 1pm. High near 43. Chance of precipitation is 80%.
Saturday Night
Rain before 1am, then a chance of showers after 1am. Low around 33. Chance of precipitation is 80%.
Sunday
Partly sunny, with a high near 41.
Sunday Night
Mostly cloudy, with a low around 22.
Monday
Mostly sunny, with a high near 33.
Monday Night
Partly cloudy, with a low around 23.
Tuesday
Mostly sunny, with a high near 39.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
Mostly cloudy, with a high near 40.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mongaup Valley NY
 41.67°N 74.79°W (Elev. 1175 ft)
Last Update:
12:28 am EST Jan 8, 2026
Forecast Valid:
1am EST Jan 8, 2026-6pm EST Jan 14, 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