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.

Light Rain

48°F

9°C

Humidity 96%
Wind Speed E 5 mph
Barometer 30.38 in (1029.4 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 11 Oct 8:56 am EDT
Extended Forecast for

Mongaup Valley NY

  • Today

    Today: Showers, mainly after 10am. High near 56. East wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 56 °F

    Showers
    Likely then
    Showers

  • Tonight

    Tonight: Showers, mainly before 11pm. Low around 48. East wind 5 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Showers then
    Chance
    Showers

  • Columbus Day

    Columbus Day: Mostly cloudy through mid morning, then becoming sunny, with a high near 69. North wind 3 to 8 mph.

    High: 69 °F

    Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 47. Light northwest wind.

    Low: 47 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers after 2pm. Partly sunny, with a high near 70. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 20%.

    High: 70 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.

    Low: 56 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Mostly sunny, with a high near 67.

    High: 67 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 62.

    High: 62 °F

    Mostly Sunny

Detailed Forecast

Today
Showers, mainly after 10am. High near 56. East wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Tonight
Showers, mainly before 11pm. Low around 48. East wind 5 to 9 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Columbus Day
Mostly cloudy through mid morning, then becoming sunny, with a high near 69. North wind 3 to 8 mph.
Monday Night
Partly cloudy, with a low around 47. Light northwest wind.
Tuesday
A slight chance of showers after 2pm. Partly sunny, with a high near 70. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
A chance of showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.
Wednesday
Mostly sunny, with a high near 67.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Mostly sunny, with a high near 62.
Thursday Night
A chance of showers after 2am. Mostly cloudy, with a low around 39. Chance of precipitation is 40%.
Friday
Showers likely. Mostly cloudy, with a high near 60. Chance of precipitation is 60%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 38. Chance of precipitation is 50%.
Saturday
A chance of showers. Partly sunny, with a high near 52. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mongaup Valley NY
 41.69°N 74.79°W (Elev. 1224 ft)
Last Update:
6:30 am EDT Oct 11, 2026
Forecast Valid:
9am EDT Oct 11, 2026-6pm EDT Oct 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