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

27°F

-3°C

Humidity 58%
Wind Speed NW 8 mph
Barometer 30.44 in (1032.7 mb)
Dewpoint 14°F (-10°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 28 Mar 9:56 pm EDT
Extended Forecast for

Tennanah Lake NY

  • Tonight

    Tonight: Partly cloudy, with a low around 21. West wind 6 to 8 mph.

    Low: 21 °F

    Partly Cloudy

  • Sunday

    Sunday: Increasing clouds, with a high near 45. Southwest wind 6 to 13 mph.

    High: 45 °F

    Increasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 34. South wind around 9 mph.

    Low: 34 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 53. Southwest wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 53 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 46. Southwest wind around 8 mph. Chance of precipitation is 50%.

    Low: 46 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, mainly before 2pm. Mostly cloudy, with a high near 64. Chance of precipitation is 40%.

    High: 64 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of rain. Mostly cloudy, with a low around 50. Chance of precipitation is 50%.

    Low: 50 °F

    Chance Rain

  • Wednesday

    Wednesday: Rain likely. Mostly cloudy, with a high near 59. Chance of precipitation is 60%.

    High: 59 °F

    Rain Likely

  • Wednesday Night

    Wednesday Night: A chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 50%.

    Low: 31 °F

    Chance
    Rain/Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 21. West wind 6 to 8 mph.
Sunday
Increasing clouds, with a high near 45. Southwest wind 6 to 13 mph.
Sunday Night
Mostly cloudy, with a low around 34. South wind around 9 mph.
Monday
Partly sunny, with a high near 53. Southwest wind 8 to 10 mph, with gusts as high as 20 mph.
Monday Night
A chance of showers. Mostly cloudy, with a low around 46. Southwest wind around 8 mph. Chance of precipitation is 50%.
Tuesday
A chance of showers, mainly before 2pm. Mostly cloudy, with a high near 64. Chance of precipitation is 40%.
Tuesday Night
A chance of rain. Mostly cloudy, with a low around 50. Chance of precipitation is 50%.
Wednesday
Rain likely. Mostly cloudy, with a high near 59. Chance of precipitation is 60%.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 31. Chance of precipitation is 50%.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 41. Chance of precipitation is 40%.
Thursday Night
Rain, snow, and freezing rain likely. Mostly cloudy, with a low around 30. Chance of precipitation is 60%.
Friday
Rain, snow, and freezing rain likely. Mostly cloudy, with a high near 40. Chance of precipitation is 60%.
Friday Night
Rain or freezing rain likely. Mostly cloudy, with a low around 33. Chance of precipitation is 60%.
Saturday
A chance of rain. Mostly cloudy, with a high near 48. Chance of precipitation is 40%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tennanah Lake NY
 41.88°N 74.95°W (Elev. 2280 ft)
Last Update:
3:22 pm EDT Mar 28, 2026
Forecast Valid:
10pm EDT Mar 28, 2026-6pm EDT Apr 4, 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