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.

Unknown Precip

30°F

-1°C

Humidity 96%
Wind Speed NW 13 G 21 mph
Barometer 29.98 in (1016.5 mb)
Dewpoint 29°F (-2°C)
Visibility 9.00 mi
Wind Chill20°F (-7°C)
Last update 23 Mar 4:56 pm EDT
Extended Forecast for

Mongaup Valley NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 23. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 23 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 45. Northwest wind 3 to 6 mph.

    High: 45 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 25. Calm wind.

    Low: 25 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 49. Calm wind becoming south 5 to 8 mph in the afternoon.

    High: 49 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 35. South wind around 6 mph.

    Low: 35 °F

    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of rain after 2pm. Partly sunny, with a high near 60. Chance of precipitation is 20%.

    High: 60 °F

    Mostly Cloudy
    then Slight
    Chance Rain

  • Thursday Night

    Thursday Night: Rain, mainly after 8pm. Low around 36. Chance of precipitation is 80%.

    Low: 36 °F

    Rain

  • Friday

    Friday: Rain before 8am. High near 44. Chance of precipitation is 80%.

    High: 44 °F

    Rain then
    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 23. Northwest wind 6 to 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 45. Northwest wind 3 to 6 mph.
Tuesday Night
Partly cloudy, with a low around 25. Calm wind.
Wednesday
Partly sunny, with a high near 49. Calm wind becoming south 5 to 8 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 35. South wind around 6 mph.
Thursday
A slight chance of rain after 2pm. Partly sunny, with a high near 60. Chance of precipitation is 20%.
Thursday Night
Rain, mainly after 8pm. Low around 36. Chance of precipitation is 80%.
Friday
Rain before 8am. High near 44. Chance of precipitation is 80%.
Friday Night
Partly cloudy, with a low around 17.
Saturday
Mostly sunny, with a high near 36.
Saturday Night
Partly cloudy, with a low around 22.
Sunday
Mostly sunny, with a high near 45.
Sunday Night
Partly cloudy, with a low around 28.
Monday
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 23, 2026
Forecast Valid:
5pm EDT Mar 23, 2026-6pm EDT Mar 30, 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