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

26°F

-3°C

Humidity 38%
Wind Speed W 5 mph
Barometer 30.00 in (1017.5 mb)
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Wind Chill20°F (-7°C)
Last update 22 Jan 10:56 pm EST
Extended Forecast for

Tennanah Lake NY

Winter Storm Watch January 25, 01:00am until January 26, 07:00pm
Cold Weather Advisory January 23, 07:00pm until January 24, 10:00am
Click here for hazard details and duration
Winter Storm Watch
Cold Weather Advisory

  • Tonight

    Tonight: Partly cloudy, with a low around 13. West wind around 10 mph.

    Low: 13 °F

    Partly Cloudy

  • Friday

    Friday: Increasing clouds, with a high near 20. Wind chill values as low as -7. West wind 11 to 15 mph, with gusts as high as 26 mph.

    High: 20 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: Partly cloudy, with a low around -3. Wind chill values as low as -20. Northwest wind 14 to 16 mph.

    Low: -3 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny and cold, with a high near 6. Wind chill values as low as -21. Northwest wind 7 to 10 mph.

    High: 6 °F

    Cold

  • Saturday Night

    Saturday Night: A chance of snow after 1am. Mostly cloudy, with a low around 1. North wind around 6 mph becoming northeast after midnight. Chance of precipitation is 40%.

    Low: 1 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Snow. The snow could be heavy at times. High near 13. Chance of precipitation is 90%.

    High: 13 °F

    Heavy Snow

  • Sunday Night

    Sunday Night: Snow. The snow could be heavy at times. Low around 9. Chance of precipitation is 100%.

    Low: 9 °F

    Heavy Snow

  • Monday

    Monday: Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 17. Chance of precipitation is 70%.

    High: 17 °F

    Snow Showers
    Likely

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 0.

    Low: 0 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 13. West wind around 10 mph.
Friday
Increasing clouds, with a high near 20. Wind chill values as low as -7. West wind 11 to 15 mph, with gusts as high as 26 mph.
Friday Night
Partly cloudy, with a low around -3. Wind chill values as low as -20. Northwest wind 14 to 16 mph.
Saturday
Mostly sunny and cold, with a high near 6. Wind chill values as low as -21. Northwest wind 7 to 10 mph.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 1. North wind around 6 mph becoming northeast after midnight. Chance of precipitation is 40%.
Sunday
Snow. The snow could be heavy at times. High near 13. Chance of precipitation is 90%.
Sunday Night
Snow. The snow could be heavy at times. Low around 9. Chance of precipitation is 100%.
Monday
Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 17. Chance of precipitation is 70%.
Monday Night
Mostly cloudy, with a low around 0.
Tuesday
Partly sunny, with a high near 12.
Tuesday Night
Partly cloudy, with a low around 1.
Wednesday
Partly sunny, with a high near 15.
Wednesday Night
Mostly cloudy, with a low around 1.
Thursday
Mostly cloudy, with a high near 13.
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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:
6:14 pm EST Jan 22, 2026
Forecast Valid:
11pm EST Jan 22, 2026-6pm EST Jan 29, 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