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

27°F

-3°C

Humidity 96%
Wind Speed Calm
Barometer 30.25 in (1026.0 mb)
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 8 Jan 10:56 pm EST
Extended Forecast for

Tennanah Lake NY

  • Tonight

    Tonight: Mostly cloudy, with a low around 28. South wind 5 to 8 mph.

    Low: 28 °F

    Mostly Cloudy

  • Friday

    Friday: Showers likely, mainly after 3pm. Mostly cloudy, with a high near 43. South wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 43 °F

    Mostly Cloudy
    then Showers
    Likely

  • Friday Night

    Friday Night: A chance of showers, mainly before 7pm. Cloudy, with a low around 31. South wind 7 to 10 mph becoming northwest after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 31 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers after 1pm. High near 39. North wind around 7 mph becoming southeast in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 39 °F

    Mostly Cloudy
    then Showers

  • Saturday Night

    Saturday Night: Rain showers likely before 4am, then a chance of snow showers. Cloudy, with a low around 32. Southeast wind around 10 mph becoming west after midnight. Chance of precipitation is 70%.

    Low: 32 °F

    Showers
    Likely then
    Rain/Snow
    Likely

  • Sunday

    Sunday: A chance of snow showers. Partly sunny, with a high near 35. Chance of precipitation is 40%.

    High: 35 °F

    Chance Snow
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 30.

    High: 30 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 28. South wind 5 to 8 mph.
Friday
Showers likely, mainly after 3pm. Mostly cloudy, with a high near 43. South wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
A chance of showers, mainly before 7pm. Cloudy, with a low around 31. South wind 7 to 10 mph becoming northwest after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Showers after 1pm. High near 39. North wind around 7 mph becoming southeast in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Saturday Night
Rain showers likely before 4am, then a chance of snow showers. Cloudy, with a low around 32. Southeast wind around 10 mph becoming west after midnight. Chance of precipitation is 70%.
Sunday
A chance of snow showers. Partly sunny, with a high near 35. Chance of precipitation is 40%.
Sunday Night
Mostly cloudy, with a low around 20.
Monday
Partly sunny, with a high near 30.
Monday Night
Mostly cloudy, with a low around 23.
Tuesday
Mostly sunny, with a high near 35.
Tuesday Night
Mostly cloudy, with a low around 26.
Wednesday
A chance of snow showers. Mostly cloudy, with a high near 34. Chance of precipitation is 30%.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 22. Chance of precipitation is 40%.
Thursday
A chance of snow showers. Partly sunny, with a high near 27. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tennanah Lake NY
 41.88°N 74.95°W (Elev. 2280 ft)
Last Update:
6:04 pm EST Jan 8, 2026
Forecast Valid:
11pm EST Jan 8, 2026-6pm EST Jan 15, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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