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 79%
Wind Speed SE 8 mph
Barometer 30.05 in (1018.8 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 9 Jan 1:56 pm EST
Extended Forecast for

Mongaup Valley NY

  • This Afternoon

    This Afternoon: Showers likely, mainly before 4pm. Cloudy, with a high near 48. South wind around 9 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Showers
    Likely

  • Tonight

    Tonight: Mostly cloudy, with a low around 31. South wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 28 mph.

    Low: 31 °F

    Mostly Cloudy

  • Saturday

    Saturday: Showers likely, mainly after 5pm. Mostly cloudy, with a high near 39. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 39 °F

    Mostly Cloudy
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Showers, mainly before 1am. Low around 31. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 31 °F

    Showers

  • Sunday

    Sunday: A slight chance of rain showers before 4pm, then a slight chance of rain and snow showers. Partly sunny, with a high near 37. West wind 7 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    High: 37 °F

    Slight Chance
    Showers then
    Slight Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Monday Night

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

    Low: 24 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Showers likely, mainly before 4pm. Cloudy, with a high near 48. South wind around 9 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Mostly cloudy, with a low around 31. South wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 28 mph.
Saturday
Showers likely, mainly after 5pm. Mostly cloudy, with a high near 39. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Showers, mainly before 1am. Low around 31. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
A slight chance of rain showers before 4pm, then a slight chance of rain and snow showers. Partly sunny, with a high near 37. West wind 7 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 21.
Monday
Mostly sunny, with a high near 34.
Monday Night
Partly cloudy, with a low around 24.
Tuesday
Mostly sunny, with a high near 39.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
Mostly cloudy, with a high near 40.
Wednesday Night
Mostly cloudy, with a low around 23.
Thursday
Partly sunny, with a high near 31.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mongaup Valley NY
 41.65°N 74.79°W (Elev. 1181 ft)
Last Update:
11:37 am EST Jan 9, 2026
Forecast Valid:
2pm EST Jan 9, 2026-6pm EST Jan 15, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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