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

56°F

13°C

Humidity 72%
Wind Speed Vrbl 6 mph
Barometer 30.06 in (1018.1 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 13 Apr 9:56 am EDT
Extended Forecast for

Mongaup Valley NY

  • Today

    Today: A chance of showers before 1pm, then a slight chance of showers after 5pm. Mostly cloudy, with a high near 72. Southwest wind 8 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 72 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 53. West wind 5 to 8 mph becoming calm after midnight.

    Low: 53 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78. Light west wind becoming southwest 5 to 10 mph in the morning. Chance of precipitation is 30%.

    High: 78 °F

    Partly Sunny
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 57. West wind 3 to 6 mph. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 80 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 50%.

    Low: 58 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 30%.

    High: 81 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 2am. Mostly cloudy, with a low around 56. Chance of precipitation is 30%.

    Low: 56 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers after 2pm. Partly sunny, with a high near 74. Chance of precipitation is 30%.

    High: 74 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
A chance of showers before 1pm, then a slight chance of showers after 5pm. Mostly cloudy, with a high near 72. Southwest wind 8 to 16 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Partly cloudy, with a low around 53. West wind 5 to 8 mph becoming calm after midnight.
Tuesday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78. Light west wind becoming southwest 5 to 10 mph in the morning. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 57. West wind 3 to 6 mph. Chance of precipitation is 30%.
Wednesday
A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80. West wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Chance of precipitation is 50%.
Thursday
A chance of showers after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 30%.
Thursday Night
A chance of showers before 2am. Mostly cloudy, with a low around 56. Chance of precipitation is 30%.
Friday
A chance of showers after 2pm. Partly sunny, with a high near 74. Chance of precipitation is 30%.
Friday Night
A chance of showers before 8pm. Partly cloudy, with a low around 50. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 49. Chance of precipitation is 50%.
Sunday
A chance of showers. Partly sunny, with a high near 65. Chance of precipitation is 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:
6:12 am EDT Apr 13, 2026
Forecast Valid:
10am EDT Apr 13, 2026-6pm EDT Apr 19, 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