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

43°F

6°C

Humidity 32%
Wind Speed Vrbl 7 mph
Barometer 30.25 in (1025.8 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 24 Mar 4:56 pm EDT
Extended Forecast for

Mongaup Valley NY

  • Tonight

    Tonight: Partly cloudy, with a low around 25. Light west wind.

    Low: 25 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 50. Calm wind becoming southwest 5 to 7 mph in the afternoon.

    High: 50 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 36. South wind around 5 mph.

    Low: 36 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of rain after 2pm. Partly sunny, with a high near 62. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.

    High: 62 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain, mainly after 8pm. Low around 37. Southwest wind around 8 mph. Chance of precipitation is 90%.

    Low: 37 °F

    Rain

  • Friday

    Friday: A slight chance of rain before 2pm. Partly sunny, with a high near 45. Chance of precipitation is 20%.

    High: 45 °F

    Slight Chance
    Rain

  • Friday Night

    Friday Night: Mostly clear, with a low around 19.

    Low: 19 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 37.

    High: 37 °F

    Sunny

  • Saturday Night

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

    Low: 22 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 25. Light west wind.
Wednesday
Partly sunny, with a high near 50. Calm wind becoming southwest 5 to 7 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 36. South wind around 5 mph.
Thursday
A chance of rain after 2pm. Partly sunny, with a high near 62. Southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%.
Thursday Night
Rain, mainly after 8pm. Low around 37. Southwest wind around 8 mph. Chance of precipitation is 90%.
Friday
A slight chance of rain before 2pm. Partly sunny, with a high near 45. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 19.
Saturday
Sunny, with a high near 37.
Saturday Night
Partly cloudy, with a low around 22.
Sunday
Sunny, with a high near 45.
Sunday Night
Mostly cloudy, with a low around 28.
Monday
Partly sunny, with a high near 52.
Monday Night
Partly cloudy, with a low around 33.
Tuesday
Partly sunny, with a high near 53.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mongaup Valley NY
 41.65°N 74.79°W (Elev. 1181 ft)
Last Update:
3:22 pm EDT Mar 24, 2026
Forecast Valid:
5pm EDT Mar 24, 2026-6pm EDT Mar 31, 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