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.

Mostly Cloudy

39°F

4°C

Humidity 79%
Wind Speed N 10 mph
Barometer 30.25 in (1024.8 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 11 Apr 7:56 am EDT
Extended Forecast for

Long Flat NY

  • Today

    Today: Mostly cloudy through mid morning, then gradual clearing, with a high near 47. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 47 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 29. Northwest wind around 6 mph becoming calm after midnight.

    Low: 29 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers after 2pm. Increasing clouds, with a high near 52. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 20%.

    High: 52 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Sunday Night

    Sunday Night: A slight chance of showers before 2am. Mostly cloudy, with a low around 44. South wind around 9 mph. Chance of precipitation is 20%.

    Low: 44 °F

    Slight Chance
    Showers

  • Monday

    Monday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 64. Southwest wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.

    High: 64 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.

    Low: 54 °F

    Showers
    Likely then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers after 2pm. Partly sunny, with a high near 72. Chance of precipitation is 30%.

    High: 72 °F

    Mostly Cloudy
    then Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.

    Low: 56 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers after 2pm. Partly sunny, with a high near 77. Chance of precipitation is 50%.

    High: 77 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 47. Northwest wind around 10 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 29. Northwest wind around 6 mph becoming calm after midnight.
Sunday
A slight chance of showers after 2pm. Increasing clouds, with a high near 52. Calm wind becoming south 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
A slight chance of showers before 2am. Mostly cloudy, with a low around 44. South wind around 9 mph. Chance of precipitation is 20%.
Monday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 64. Southwest wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Monday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Tuesday
A chance of showers after 2pm. Partly sunny, with a high near 72. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.
Wednesday
A chance of showers after 2pm. Partly sunny, with a high near 77. Chance of precipitation is 50%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 58. Chance of precipitation is 50%.
Thursday
A chance of showers. Partly sunny, with a high near 74. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 54. Chance of precipitation is 40%.
Friday
A chance of showers. Partly sunny, with a high near 70. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Long Flat NY
 42.01°N 75.05°W (Elev. 1900 ft)
Last Update:
6:27 am EDT Apr 11, 2026
Forecast Valid:
8am EDT Apr 11, 2026-6pm EDT Apr 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