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.

Fair

47°F

8°C

Humidity 69%
Wind Speed NW 12 G 17 mph
Barometer 29.91 in (1013.1 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 11 Nov 12:56 am EST
Extended Forecast for

Mongaup Valley NY

  • Overnight

    Overnight: Mostly clear, with a low around 35. West wind 5 to 7 mph.

    Low: 35 °F

    Mostly Clear

  • Veterans Day

    Veterans Day: Partly sunny, with a high near 56. West wind around 5 mph becoming calm in the afternoon.

    High: 56 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Rain, mainly after 2am. Low around 37. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Cloudy then
    Rain

  • Thursday

    Thursday: Rain. High near 48. East wind 6 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 48 °F

    Rain

  • Thursday Night

    Thursday Night: Rain before 4am, then rain, possibly mixed with snow. Low around 29. North wind around 7 mph. Chance of precipitation is 90%.

    Low: 29 °F

    Rain then
    Rain/Snow

  • Friday

    Friday: Rain and snow likely before 10am, then rain likely between 10am and 4pm, then a chance of snow after 4pm. Cloudy, with a high near 41. Chance of precipitation is 70%.

    High: 41 °F

    Rain/Snow
    Likely

  • Friday Night

    Friday Night: A chance of snow before 7pm, then a chance of rain and snow between 7pm and 10pm, then a chance of snow after 10pm. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.

    Low: 24 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Saturday

    Saturday: Mostly cloudy, with a high near 41.

    High: 41 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 35. West wind 5 to 7 mph.
Veterans Day
Partly sunny, with a high near 56. West wind around 5 mph becoming calm in the afternoon.
Wednesday Night
Rain, mainly after 2am. Low around 37. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain. High near 48. East wind 6 to 8 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain before 4am, then rain, possibly mixed with snow. Low around 29. North wind around 7 mph. Chance of precipitation is 90%.
Friday
Rain and snow likely before 10am, then rain likely between 10am and 4pm, then a chance of snow after 4pm. Cloudy, with a high near 41. Chance of precipitation is 70%.
Friday Night
A chance of snow before 7pm, then a chance of rain and snow between 7pm and 10pm, then a chance of snow after 10pm. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.
Saturday
Mostly cloudy, with a high near 41.
Saturday Night
Mostly cloudy, with a low around 27.
Sunday
Partly sunny, with a high near 44.
Sunday Night
Mostly cloudy, with a low around 26.
Monday
Partly sunny, with a high near 46.
Monday Night
Partly cloudy, with a low around 24.
Tuesday
Mostly sunny, with a high near 48.
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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:
1:30 am EST Nov 11, 2026
Forecast Valid:
1am EST Nov 11, 2026-6pm EST Nov 17, 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