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

17°F

-8°C

Humidity 92%
Wind Speed Calm
Barometer 30.00 in (1017.8 mb)
Dewpoint 15°F (-9°C)
Visibility 9.00 mi
Last update 15 Feb 2:56 am EST
Extended Forecast for

Long Flat NY

  • Overnight

    Overnight: Patchy fog. Patchy freezing fog. Otherwise, partly cloudy, with a low around 18. Calm wind.

    Low: 18 °F

    Patchy
    Freezing Fog
    and Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 9am. Patchy freezing fog before 9am. Otherwise, partly sunny, with a high near 37. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 37 °F

    Patchy
    Freezing Fog
    and Patchy
    Fog then
    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of snow showers, mainly before 2am. Mostly cloudy, with a low around 25. Southeast wind 3 to 6 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 25 °F

    Chance Snow
    Showers

  • Washington's Birthday

    Washington's Birthday: Mostly cloudy, with a high near 37. Light south wind.

    High: 37 °F

    Mostly Cloudy

  • Monday Night

    Monday Night: A slight chance of snow showers between 1am and 4am, then a slight chance of rain or freezing rain after 4am. Mostly cloudy, with a low around 30. Light south wind. Chance of precipitation is 20%.

    Low: 30 °F

    Mostly Cloudy
    then Slight
    Chance Wintry
    Mix

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 42.

    High: 42 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 25.

    Low: 25 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain. High near 37. Chance of precipitation is 90%.

    High: 37 °F

    Rain Likely
    then Rain

  • Wednesday Night

    Wednesday Night: Rain likely before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 70%.

    Low: 31 °F

    Rain Likely
    then
    Rain/Snow
    Likely

Detailed Forecast

Overnight
Patchy fog. Patchy freezing fog. Otherwise, partly cloudy, with a low around 18. Calm wind.
Sunday
Patchy fog before 9am. Patchy freezing fog before 9am. Otherwise, partly sunny, with a high near 37. Calm wind becoming southeast around 5 mph in the afternoon.
Sunday Night
A chance of snow showers, mainly before 2am. Mostly cloudy, with a low around 25. Southeast wind 3 to 6 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Washington's Birthday
Mostly cloudy, with a high near 37. Light south wind.
Monday Night
A slight chance of snow showers between 1am and 4am, then a slight chance of rain or freezing rain after 4am. Mostly cloudy, with a low around 30. Light south wind. Chance of precipitation is 20%.
Tuesday
Mostly cloudy, with a high near 42.
Tuesday Night
Mostly cloudy, with a low around 25.
Wednesday
Rain. High near 37. Chance of precipitation is 90%.
Wednesday Night
Rain likely before 1am, then a chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 70%.
Thursday
A chance of rain and snow before 1pm, then a chance of rain. Partly sunny, with a high near 38. Chance of precipitation is 30%.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.
Friday
Rain and snow likely. Mostly cloudy, with a high near 37. Chance of precipitation is 70%.
Friday Night
A chance of snow. Mostly cloudy, with a low around 26. Chance of precipitation is 50%.
Saturday
A chance of snow. Mostly cloudy, with a high near 32. 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 75.05°W (Elev. 1900 ft)
Last Update:
12:04 am EST Feb 15, 2026
Forecast Valid:
3am EST Feb 15, 2026-6pm EST Feb 21, 2026
 
Forecast Discussion
 
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Additional Resources

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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