National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7°NLon: 74.8°WElev: 1404ft.

Fair

26°F

-3°C

Humidity 71%
Wind Speed Calm
Barometer 30.32 in (1028.2 mb)
Dewpoint 18°F (-8°C)
Visibility 10.00 mi
Last update 15 Mar 1:56 am EDT
Extended Forecast for

Swan Lake NY

  • Overnight

    Overnight: A chance of light snow, mainly after 4am. Mostly cloudy, with a low around 25. Calm wind. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 25 °F

    Chance Light
    Snow

  • Sunday

    Sunday: A chance of light snow, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 41. Light east wind becoming southeast 8 to 13 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Chance Light
    Snow then
    Partly Sunny

  • Sunday Night

    Sunday Night: Showers, mainly after 2am. Low around 33. Southeast wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 33 °F

    Slight Chance
    Showers then
    Showers

  • Monday

    Monday: Showers, with thunderstorms also possible after 2pm. Some of the storms could be severe. High near 59. South wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 59 °F

    Showers then
    Severe
    Thunderstorms

  • Monday Night

    Monday Night: Rain showers before 1am, then rain and snow showers between 1am and 2am, then a chance of snow showers after 2am. Some thunder is also possible. Low around 23. South wind 13 to 16 mph becoming west in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 100%.

    Low: 23 °F

    Severe
    Thunderstorms
    then
    Rain/Snow

  • Tuesday

    Tuesday: A chance of snow showers before 8am. Partly sunny, with a high near 29. Chance of precipitation is 30%.

    High: 29 °F

    Chance Snow
    Showers then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 14.

    Low: 14 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 21.

    Low: 21 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of light snow, mainly after 4am. Mostly cloudy, with a low around 25. Calm wind. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.
Sunday
A chance of light snow, mainly before 8am. Cloudy, then gradually becoming mostly sunny, with a high near 41. Light east wind becoming southeast 8 to 13 mph in the morning. Winds could gust as high as 25 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Sunday Night
Showers, mainly after 2am. Low around 33. Southeast wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
Showers, with thunderstorms also possible after 2pm. Some of the storms could be severe. High near 59. South wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Monday Night
Rain showers before 1am, then rain and snow showers between 1am and 2am, then a chance of snow showers after 2am. Some thunder is also possible. Low around 23. South wind 13 to 16 mph becoming west in the evening. Winds could gust as high as 28 mph. Chance of precipitation is 100%.
Tuesday
A chance of snow showers before 8am. Partly sunny, with a high near 29. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 14.
Wednesday
Mostly sunny, with a high near 34.
Wednesday Night
Mostly cloudy, with a low around 21.
Thursday
Partly sunny, with a high near 42.
Thursday Night
Mostly cloudy, with a low around 28.
Friday
Partly sunny, with a high near 46.
Friday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 29. Chance of precipitation is 50%.
Saturday
A chance of rain and snow showers. Partly sunny, with a high near 42. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
Swan Lake NY
 41.76°N 74.8°W (Elev. 1404 ft)
Last Update:
2:30 am EDT Mar 15, 2026
Forecast Valid:
2am EDT Mar 15, 2026-6pm EDT Mar 21, 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