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

15°F

-9°C

Humidity 44%
Wind Speed SW 5 mph
Barometer 29.90 in (1015.5 mb)
Dewpoint -3°F (-19°C)
Visibility 10.00 mi
Wind Chill7°F (-14°C)
Last update 28 Jan 4:56 pm EST
Extended Forecast for

Tennanah Lake NY

Cold Weather Advisory January 28, 11:00pm until January 29, 09:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Tonight

    Tonight: Mostly cloudy, with a low around -3. Wind chill values as low as -14. Northwest wind 5 to 7 mph.

    Low: -3 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 12. Wind chill values as low as -15. Northwest wind 6 to 10 mph.

    High: 12 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around -4. Wind chill values as low as -20. Northwest wind around 11 mph.

    Low: -4 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near 7. Wind chill values as low as -21. Northwest wind around 10 mph, with gusts as high as 20 mph.

    High: 7 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around -7. Northwest wind 7 to 10 mph.

    Low: -7 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 12.

    High: 12 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around -1.

    Low: -1 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 14.

    High: 14 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 6.

    Low: 6 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around -3. Wind chill values as low as -14. Northwest wind 5 to 7 mph.
Thursday
Mostly sunny, with a high near 12. Wind chill values as low as -15. Northwest wind 6 to 10 mph.
Thursday Night
Mostly cloudy, with a low around -4. Wind chill values as low as -20. Northwest wind around 11 mph.
Friday
Mostly sunny and cold, with a high near 7. Wind chill values as low as -21. Northwest wind around 10 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around -7. Northwest wind 7 to 10 mph.
Saturday
Mostly sunny, with a high near 12.
Saturday Night
Mostly cloudy, with a low around -1.
Sunday
Partly sunny, with a high near 14.
Sunday Night
Mostly cloudy, with a low around 6.
Monday
Mostly sunny, with a high near 23.
Monday Night
Mostly cloudy, with a low around 8.
Tuesday
Partly sunny, with a high near 23.
Tuesday Night
Mostly cloudy, with a low around 7.
Wednesday
Partly sunny, with a high near 23.
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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:
2:08 pm EST Jan 28, 2026
Forecast Valid:
5pm EST Jan 28, 2026-6pm EST Feb 4, 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