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

12°F

-11°C

Humidity 70%
Wind Speed NW 18 G 29 mph
Barometer 29.59 in (1004.1 mb)
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Wind Chill-5°F (-21°C)
Last update 16 Jan 4:56 am EST
Extended Forecast for

Tennanah Lake NY

  • Today

    Today: Mostly sunny, with a high near 22. Wind chill values as low as -8. Northwest wind 8 to 17 mph becoming southwest in the afternoon. Winds could gust as high as 31 mph.

    High: 22 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of snow showers, mainly between 1am and 5am. Increasing clouds, with a low around 19. South wind 7 to 9 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.

    Low: 19 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Saturday

    Saturday: Snow showers likely, mainly after 7am. Mostly cloudy, with a high near 28. South wind around 8 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    High: 28 °F

    Snow Showers
    Likely

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 20. Southwest wind around 7 mph.

    Low: 20 °F

    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of snow showers. Mostly cloudy, with a high near 24. West wind around 7 mph. Chance of precipitation is 20%.

    High: 24 °F

    Slight Chance
    Snow Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 11.

    Low: 11 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Partly sunny, with a high near 22.

    High: 22 °F

    Partly Sunny

  • Monday Night

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

    Low: 2 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny and cold, with a high near 9.

    High: 9 °F

    Cold

Detailed Forecast

Today
Mostly sunny, with a high near 22. Wind chill values as low as -8. Northwest wind 8 to 17 mph becoming southwest in the afternoon. Winds could gust as high as 31 mph.
Tonight
A chance of snow showers, mainly between 1am and 5am. Increasing clouds, with a low around 19. South wind 7 to 9 mph. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.
Saturday
Snow showers likely, mainly after 7am. Mostly cloudy, with a high near 28. South wind around 8 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Saturday Night
Mostly cloudy, with a low around 20. Southwest wind around 7 mph.
Sunday
A slight chance of snow showers. Mostly cloudy, with a high near 24. West wind around 7 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 11.
M.L.King Day
Partly sunny, with a high near 22.
Monday Night
Partly cloudy, with a low around 2.
Tuesday
Partly sunny and cold, with a high near 9.
Tuesday Night
Partly cloudy, with a low around 1.
Wednesday
Partly sunny, with a high near 18.
Wednesday Night
Mostly cloudy, with a low around 13.
Thursday
A chance of snow showers. Partly sunny, with a high near 26. 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:
4:58 am EST Jan 16, 2026
Forecast Valid:
5am EST Jan 16, 2026-6pm EST Jan 22, 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