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.

Freezing Fog

15°F

-9°C

Humidity 95%
Wind Speed Calm
Barometer 30.12 in (1022.4 mb)
Dewpoint 14°F (-10°C)
Visibility 0.25 mi
Last update 28 Dec 7:56 am EST
Extended Forecast for

Tennanah Lake NY

Winter Weather Advisory December 28, 02:00pm until December 29, 04:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Today

    Today: A chance of freezing rain, mainly after 4pm. Mostly cloudy, with a high near 30. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 30%.

    High: 30 °F

    Partly Sunny
    then Chance
    Freezing Rain

  • Tonight

    Tonight: Freezing rain before 1am, then a chance of rain or freezing rain between 1am and 2am, then rain after 2am. Temperature rising to around 36 by 5am. South wind 8 to 11 mph. Chance of precipitation is 100%. New ice accumulation of around a 0.1 of an inch possible.

    Low: 29 °F⇑

    Freezing Rain
    then
    Rain/Freezing
    Rain

  • Monday

    Monday: Rain showers before 4pm, then a slight chance of rain and snow showers. High near 41. South wind 9 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 41 °F

    Rain then
    Rain/Snow

  • Monday Night

    Monday Night: A slight chance of snow showers before 7pm, then a chance of snow showers after 1am. Mostly cloudy, with a low around 16. Wind chill values as low as -1. Breezy, with a west wind 18 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 16 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Snow Showers

  • Tuesday

    Tuesday: A chance of snow showers. Mostly cloudy, with a high near 19. Breezy, with a west wind 16 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 40%.

    High: 19 °F

    Chance Snow
    Showers and
    Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of snow showers after 1pm. Mostly cloudy, with a high near 24. Chance of precipitation is 40%.

    High: 24 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Wednesday Night

    Wednesday Night: A chance of snow showers. Mostly cloudy, with a low around 12. Chance of precipitation is 50%.

    Low: 12 °F

    Chance Snow
    Showers

  • New Year's Day

    New Year's Day: A chance of snow showers. Partly sunny, with a high near 20. Chance of precipitation is 40%.

    High: 20 °F

    Chance Snow
    Showers

Detailed Forecast

Today
A chance of freezing rain, mainly after 4pm. Mostly cloudy, with a high near 30. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 30%.
Tonight
Freezing rain before 1am, then a chance of rain or freezing rain between 1am and 2am, then rain after 2am. Temperature rising to around 36 by 5am. South wind 8 to 11 mph. Chance of precipitation is 100%. New ice accumulation of around a 0.1 of an inch possible.
Monday
Rain showers before 4pm, then a slight chance of rain and snow showers. High near 41. South wind 9 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Monday Night
A slight chance of snow showers before 7pm, then a chance of snow showers after 1am. Mostly cloudy, with a low around 16. Wind chill values as low as -1. Breezy, with a west wind 18 to 23 mph, with gusts as high as 33 mph. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Tuesday
A chance of snow showers. Mostly cloudy, with a high near 19. Breezy, with a west wind 16 to 22 mph, with gusts as high as 34 mph. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 17.
Wednesday
A chance of snow showers after 1pm. Mostly cloudy, with a high near 24. Chance of precipitation is 40%.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 12. Chance of precipitation is 50%.
New Year's Day
A chance of snow showers. Partly sunny, with a high near 20. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 7.
Friday
Partly sunny, with a high near 18.
Friday Night
Mostly cloudy, with a low around 9.
Saturday
Mostly cloudy, with a high near 24.
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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:
5:57 am EST Dec 28, 2025
Forecast Valid:
8am EST Dec 28, 2025-6pm EST Jan 3, 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