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

24°F

-4°C

Humidity 84%
Wind Speed NW 3 mph
Barometer 30.33 in (1028.5 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 25 Mar 6:56 am EDT
Extended Forecast for

Mongaup Valley NY

  • Today

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

    High: 50 °F

    Partly Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 35. South wind around 6 mph.

    Low: 35 °F

    Increasing
    Clouds

  • Thursday

    Thursday: A chance of rain after 2pm. Partly sunny, with a high near 63. Southwest wind 5 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Partly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain, mainly after 8pm. Low around 37. Southwest wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 37 °F

    Rain

  • Friday

    Friday: Rain, possibly mixing with snow after 11am, then gradually ending. High near 43. Northwest wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.

    High: 43 °F

    Rain/Snow
    then Slight
    Chance
    Rain/Snow

  • Friday Night

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

    Low: 19 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 22 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 50. Calm wind becoming south 5 to 7 mph in the afternoon.
Tonight
Increasing clouds, with a low around 35. South wind around 6 mph.
Thursday
A chance of rain after 2pm. Partly sunny, with a high near 63. Southwest wind 5 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain, mainly after 8pm. Low around 37. Southwest wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Rain, possibly mixing with snow after 11am, then gradually ending. High near 43. Northwest wind 9 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%.
Friday Night
Mostly clear, with a low around 19.
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 cloudy, with a high near 52.
Monday Night
Mostly cloudy, with a low around 37.
Tuesday
A chance of rain. Mostly cloudy, with a high near 55. Chance of precipitation is 30%.
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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:
6:22 am EDT Mar 25, 2026
Forecast Valid:
7am EDT Mar 25, 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