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

75°F

24°C

Humidity 39%
Wind Speed W 13 G 21 mph
Barometer 29.71 in (1005.5 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 19 Jun 4:56 pm EDT
Extended Forecast for

Long Flat NY

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 52. West wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 52 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Partly sunny, with a high near 69. Northwest wind around 10 mph, with gusts as high as 21 mph.

    High: 69 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 50. Northwest wind around 6 mph becoming calm in the evening.

    Low: 50 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Mostly sunny, with a high near 73. Calm wind becoming west around 6 mph in the morning.

    High: 73 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers after 2am. Partly cloudy, with a low around 53. Calm wind. Chance of precipitation is 40%.

    Low: 53 °F

    Partly Cloudy
    then Chance
    Showers

  • Monday

    Monday: Showers, with thunderstorms also possible after 11am. High near 68. Chance of precipitation is 100%.

    High: 68 °F

    Showers

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.

    Low: 54 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers before 8am. Partly sunny, with a high near 72. Chance of precipitation is 30%.

    High: 72 °F

    Chance
    Showers then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 52. West wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 69. Northwest wind around 10 mph, with gusts as high as 21 mph.
Saturday Night
Increasing clouds, with a low around 50. Northwest wind around 6 mph becoming calm in the evening.
Sunday
Mostly sunny, with a high near 73. Calm wind becoming west around 6 mph in the morning.
Sunday Night
A chance of showers after 2am. Partly cloudy, with a low around 53. Calm wind. Chance of precipitation is 40%.
Monday
Showers, with thunderstorms also possible after 11am. High near 68. Chance of precipitation is 100%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 54. Chance of precipitation is 70%.
Tuesday
A chance of showers before 8am. Partly sunny, with a high near 72. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 52.
Wednesday
Mostly sunny, with a high near 74.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 74. Chance of precipitation is 70%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 54. Chance of precipitation is 60%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 74. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Long Flat NY
 42.01°N 75.08°W (Elev. 2031 ft)
Last Update:
2:30 pm EDT Jun 19, 2026
Forecast Valid:
5pm EDT Jun 19, 2026-6pm EDT Jun 26, 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