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.

Light Snow

26°F

-3°C

Humidity 92%
Wind Speed N 7 mph
Barometer 29.71 in (1007.8 mb)
Dewpoint 24°F (-4°C)
Visibility 9.00 mi
Wind Chill18°F (-8°C)
Last update 23 Feb 12:56 am EST
Extended Forecast for

Tennanah Lake NY

Blizzard Warning February 23, 01:23am until February 23, 07:00pm
Click here for hazard details and duration
Blizzard Warning
  •  
    Blizzard Warning February 23, 01:23am until February 23, 07:00pm

    NOW until 7:00pm Mon

    Blizzard Warning

  • Overnight

    Low: 22 °F

    Snow

  • Monday

    Monday: Snow, mainly before noon. High near 29. North wind around 18 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New snow accumulation of around 2 inches.

    High: 29 °F

    Snow then
    Chance Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 11. Wind chill values as low as -1. Northwest wind 13 to 16 mph, with gusts as high as 30 mph.

    Low: 11 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 19. Wind chill values as low as -3. Northwest wind 7 to 11 mph, with gusts as high as 22 mph.

    High: 19 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Snow after 1am. Low around 11. Calm wind becoming south 5 to 8 mph after midnight. Chance of precipitation is 80%.

    Low: 11 °F

    Partly Cloudy
    then Snow

  • Wednesday

    Wednesday: Snow likely, mainly before 1pm. Mostly cloudy, with a high near 35. Chance of precipitation is 70%.

    High: 35 °F

    Snow Likely

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 17.

    Low: 17 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of snow after 1pm. Partly sunny, with a high near 31. Chance of precipitation is 50%.

    High: 31 °F

    Partly Sunny
    then Chance
    Snow

Detailed Forecast

Overnight
Snow. Low around 22. North wind 13 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. Total nighttime snow accumulation of around 3 inches.
Monday
Snow, mainly before noon. High near 29. North wind around 18 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New snow accumulation of around 2 inches.
Monday Night
Mostly cloudy, with a low around 11. Wind chill values as low as -1. Northwest wind 13 to 16 mph, with gusts as high as 30 mph.
Tuesday
Partly sunny, with a high near 19. Wind chill values as low as -3. Northwest wind 7 to 11 mph, with gusts as high as 22 mph.
Tuesday Night
Snow after 1am. Low around 11. Calm wind becoming south 5 to 8 mph after midnight. Chance of precipitation is 80%.
Wednesday
Snow likely, mainly before 1pm. Mostly cloudy, with a high near 35. Chance of precipitation is 70%.
Wednesday Night
Partly cloudy, with a low around 17.
Thursday
A chance of snow after 1pm. Partly sunny, with a high near 31. Chance of precipitation is 50%.
Thursday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 60%.
Friday
Partly sunny, with a high near 33.
Friday Night
Mostly clear, with a low around 19.
Saturday
Sunny, with a high near 43.
Saturday Night
Partly cloudy, with a low around 23.
Sunday
Partly sunny, with a high near 35.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tennanah Lake NY
 41.89°N 74.98°W (Elev. 2001 ft)
Last Update:
11:58 pm EST Feb 22, 2026
Forecast Valid:
1am EST Feb 23, 2026-6pm EST Mar 1, 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