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.

Overcast

27°F

-3°C

Humidity 63%
Wind Speed Vrbl 3 mph
Barometer 30.05 in (1020.1 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Last update 3 Feb 2:56 pm EST
Extended Forecast for

Tennanah Lake NY

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 23. West wind around 6 mph.

    High: 23 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 7. Wind chill values as low as -3. West wind 5 to 8 mph.

    Low: 7 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 21. Wind chill values as low as -6. Northwest wind around 8 mph.

    High: 21 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 7. Wind chill values as low as -5. Northwest wind around 8 mph.

    Low: 7 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 20. Northwest wind around 8 mph.

    High: 20 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 2.

    Low: 2 °F

    Partly Cloudy

  • Friday

    Friday: A chance of flurries before 1pm, then a chance of snow showers after 1pm. Partly sunny, with a high near 21. Chance of precipitation is 30%.

    High: 21 °F

    Partly Sunny
    then Chance
    Snow Showers

  • Friday Night

    Friday Night: A chance of snow showers before 1am. Mostly cloudy, with a low around -4. Blustery. Chance of precipitation is 50%.

    Low: -4 °F

    Chance Snow
    Showers and
    Blustery

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 3. Blustery.

    High: 3 °F

    Cold and
    Blustery

Detailed Forecast

This Afternoon
Partly sunny, with a high near 23. West wind around 6 mph.
Tonight
Mostly cloudy, with a low around 7. Wind chill values as low as -3. West wind 5 to 8 mph.
Wednesday
Mostly sunny, with a high near 21. Wind chill values as low as -6. Northwest wind around 8 mph.
Wednesday Night
Mostly cloudy, with a low around 7. Wind chill values as low as -5. Northwest wind around 8 mph.
Thursday
Mostly sunny, with a high near 20. Northwest wind around 8 mph.
Thursday Night
Partly cloudy, with a low around 2.
Friday
A chance of flurries before 1pm, then a chance of snow showers after 1pm. Partly sunny, with a high near 21. Chance of precipitation is 30%.
Friday Night
A chance of snow showers before 1am. Mostly cloudy, with a low around -4. Blustery. Chance of precipitation is 50%.
Saturday
Mostly sunny and cold, with a high near 3. Blustery.
Saturday Night
Partly cloudy, with a low around -7. Blustery.
Sunday
Partly sunny and cold, with a high near 6.
Sunday Night
Mostly cloudy, with a low around -6.
Monday
Mostly sunny, with a high near 12.
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:
3:22 pm EST Feb 3, 2026
Forecast Valid:
3pm EST Feb 3, 2026-6pm EST Feb 9, 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