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

26°F

-3°C

Humidity 75%
Wind Speed Calm
Barometer 30.30 in (1027.8 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Last update 21 Apr 1:56 am EDT
Extended Forecast for

Swan Lake NY

  • Overnight

    Overnight: Clear, with a low around 21. Light north wind.

    Low: 21 °F

    Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 48. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 48 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: A chance of showers, mainly after 10pm. Mostly cloudy, with a low around 34. Southeast wind around 6 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly before 8am. Mostly cloudy, with a high near 55. South wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 55 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 38. Light and variable wind.

    Low: 38 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 63.

    High: 63 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers after 2am. Partly cloudy, with a low around 39. Chance of precipitation is 40%.

    Low: 39 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Clear, with a low around 21. Light north wind.
Tuesday
Increasing clouds, with a high near 48. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
A chance of showers, mainly after 10pm. Mostly cloudy, with a low around 34. Southeast wind around 6 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers likely, mainly before 8am. Mostly cloudy, with a high near 55. South wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Mostly cloudy, with a low around 38. Light and variable wind.
Thursday
Mostly sunny, with a high near 60.
Thursday Night
Partly cloudy, with a low around 39.
Friday
Mostly sunny, with a high near 63.
Friday Night
A chance of showers after 2am. Partly cloudy, with a low around 39. Chance of precipitation is 40%.
Saturday
A chance of showers. Mostly cloudy, with a high near 54. Chance of precipitation is 50%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 40. Chance of precipitation is 60%.
Sunday
A chance of showers. Mostly cloudy, with a high near 58. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 40. Chance of precipitation is 30%.
Monday
A chance of showers. Partly sunny, with a high near 59. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Swan Lake NY
 41.76°N 74.8°W (Elev. 1404 ft)
Last Update:
2:08 am EDT Apr 21, 2026
Forecast Valid:
2am EDT Apr 21, 2026-6pm EDT Apr 27, 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