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.

Light Snow Fog/Mist

33°F

1°C

Humidity 96%
Wind Speed Calm
Barometer 29.29 in (993.0 mb)
Dewpoint 32°F (0°C)
Visibility 1.00 mi
Last update 15 Jan 4:56 am EST
Extended Forecast for

Tennanah Lake NY

  • Overnight

    Overnight: Snow showers likely. Cloudy, with a low around 25. South wind around 7 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 25 °F

    Snow Showers
    Likely

  • Thursday

    Thursday: Snow showers likely, mainly before 8am. Mostly cloudy, with a temperature falling to around 19 by 5pm. West wind 10 to 14 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 31 °F⇓

    Snow Showers
    Likely then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: A slight chance of snow showers before 9pm. Mostly cloudy, with a low around 10. Wind chill values as low as -7. West wind 16 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

    Low: 10 °F

    Slight Chance
    Snow Showers
    then Mostly
    Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 22. Wind chill values as low as -5. Northwest wind 7 to 14 mph becoming southwest in the afternoon.

    High: 22 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 19. South wind 7 to 9 mph.

    Low: 19 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of snow showers. Mostly cloudy, with a high near 28. Chance of precipitation is 50%.

    High: 28 °F

    Chance Snow
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of snow showers after 1pm. Partly sunny, with a high near 23. Chance of precipitation is 30%.

    High: 23 °F

    Partly Sunny
    then Chance
    Snow Showers

  • Sunday Night

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

    Low: 11 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Snow showers likely. Cloudy, with a low around 25. South wind around 7 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.
Thursday
Snow showers likely, mainly before 8am. Mostly cloudy, with a temperature falling to around 19 by 5pm. West wind 10 to 14 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
A slight chance of snow showers before 9pm. Mostly cloudy, with a low around 10. Wind chill values as low as -7. West wind 16 to 18 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.
Friday
Mostly sunny, with a high near 22. Wind chill values as low as -5. Northwest wind 7 to 14 mph becoming southwest in the afternoon.
Friday Night
Mostly cloudy, with a low around 19. South wind 7 to 9 mph.
Saturday
A chance of snow showers. Mostly cloudy, with a high near 28. Chance of precipitation is 50%.
Saturday Night
Mostly cloudy, with a low around 19.
Sunday
A chance of snow showers after 1pm. Partly sunny, with a high near 23. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 11.
M.L.King Day
Partly sunny, with a high near 20.
Monday Night
Mostly cloudy, with a low around 5.
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 15.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tennanah Lake NY
 41.88°N 74.95°W (Elev. 2280 ft)
Last Update:
4:57 am EST Jan 15, 2026
Forecast Valid:
5am EST Jan 15, 2026-6pm EST Jan 21, 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