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.

Partly Cloudy

28°F

-2°C

Humidity 96%
Wind Speed Calm
Barometer 30.05 in (1019.2 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Last update 20 Mar 7:56 am EDT
Extended Forecast for

Long Flat NY

  • Today

    Today: Rain, mainly after 3pm. High near 50. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 50 °F

    Mostly Cloudy
    then Rain

  • Tonight

    Tonight: Rain likely, mainly before 7pm. Mostly cloudy, with a low around 32. West wind around 7 mph becoming northwest after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 32 °F

    Rain Likely
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 44. Northwest wind around 8 mph.

    High: 44 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of snow after 2am, mixing with rain after 5am. Increasing clouds, with a low around 33. Light and variable wind becoming south around 5 mph after midnight. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 33 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Sunday

    Sunday: A chance of rain and snow before 11am, then rain likely. Mostly cloudy, with a high near 53. South wind around 7 mph. Chance of precipitation is 60%.

    High: 53 °F

    Chance
    Rain/Snow
    then Rain
    Likely

  • Sunday Night

    Sunday Night: Rain likely before 2am, then rain and snow likely. Mostly cloudy, with a low around 33. Chance of precipitation is 70%.

    Low: 33 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Monday

    Monday: Rain and snow likely, mainly before 8am. Mostly cloudy, with a high near 39. Chance of precipitation is 60%.

    High: 39 °F

    Rain/Snow
    Likely then
    Chance
    Rain/Snow

  • Monday Night

    Monday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

Detailed Forecast

Today
Rain, mainly after 3pm. High near 50. Light south wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Tonight
Rain likely, mainly before 7pm. Mostly cloudy, with a low around 32. West wind around 7 mph becoming northwest after midnight. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly sunny, with a high near 44. Northwest wind around 8 mph.
Saturday Night
A chance of snow after 2am, mixing with rain after 5am. Increasing clouds, with a low around 33. Light and variable wind becoming south around 5 mph after midnight. Chance of precipitation is 30%. Little or no snow accumulation expected.
Sunday
A chance of rain and snow before 11am, then rain likely. Mostly cloudy, with a high near 53. South wind around 7 mph. Chance of precipitation is 60%.
Sunday Night
Rain likely before 2am, then rain and snow likely. Mostly cloudy, with a low around 33. Chance of precipitation is 70%.
Monday
Rain and snow likely, mainly before 8am. Mostly cloudy, with a high near 39. Chance of precipitation is 60%.
Monday Night
Partly cloudy, with a low around 21.
Tuesday
Mostly sunny, with a high near 39.
Tuesday Night
A chance of snow after 2am. Mostly cloudy, with a low around 26. Chance of precipitation is 30%.
Wednesday
A chance of snow. Partly sunny, with a high near 38. Chance of precipitation is 30%.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 23. Chance of precipitation is 40%.
Thursday
A chance of rain and snow. Partly sunny, with a high near 46. Chance of precipitation is 40%.
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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:
6:10 am EDT Mar 20, 2026
Forecast Valid:
8am EDT Mar 20, 2026-6pm EDT Mar 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation