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.

Partly Cloudy

26°F

-3°C

Humidity 88%
Wind Speed Calm
Barometer 30.02 in (1018.3 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 25 Dec 4:56 am EST
Extended Forecast for

Tennanah Lake NY

Winter Storm Watch December 26, 01:00pm until December 27, 12:00pm
Click here for hazard details and duration
Winter Storm Watch

  • Christmas Day

    Christmas Day: Partly sunny, with a high near 35. Southwest wind 6 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.

    High: 35 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 8. Wind chill values as low as -4. North wind 8 to 16 mph.

    Low: 8 °F

    Mostly Clear

  • Friday

    Friday: Snow likely after 1pm. Increasing clouds, with a high near 21. Wind chill values as low as -3. North wind around 6 mph becoming southeast in the afternoon. Chance of precipitation is 60%. New snow accumulation of around 2 inches.

    High: 21 °F

    Partly Sunny
    then Snow
    Likely

  • Friday Night

    Friday Night: Snow. The snow could be heavy at times. Low around 15. Southeast wind 7 to 9 mph. Chance of precipitation is 100%. New snow accumulation of around 5 inches.

    Low: 15 °F

    Heavy Snow

  • Saturday

    Saturday: A chance of snow, mainly before 1pm. Mostly cloudy, with a high near 25. East wind around 6 mph becoming light and variable in the afternoon. Chance of precipitation is 40%.

    High: 25 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain or freezing rain after 1pm. Mostly cloudy, with a high near 32. Chance of precipitation is 50%.

    High: 32 °F

    Mostly Cloudy
    then Chance
    Rain/Freezing
    Rain

  • Sunday Night

    Sunday Night: Freezing rain before 1am, then rain. Low around 29. Chance of precipitation is 90%.

    Low: 29 °F

    Freezing Rain
    then
    Rain/Freezing
    Rain

  • Monday

    Monday: Rain before 1pm, then a chance of rain and snow. High near 37. Chance of precipitation is 80%.

    High: 37 °F

    Rain then
    Rain/Snow

Detailed Forecast

Christmas Day
Partly sunny, with a high near 35. Southwest wind 6 to 15 mph becoming northwest in the afternoon. Winds could gust as high as 25 mph.
Tonight
Mostly clear, with a low around 8. Wind chill values as low as -4. North wind 8 to 16 mph.
Friday
Snow likely after 1pm. Increasing clouds, with a high near 21. Wind chill values as low as -3. North wind around 6 mph becoming southeast in the afternoon. Chance of precipitation is 60%. New snow accumulation of around 2 inches.
Friday Night
Snow. The snow could be heavy at times. Low around 15. Southeast wind 7 to 9 mph. Chance of precipitation is 100%. New snow accumulation of around 5 inches.
Saturday
A chance of snow, mainly before 1pm. Mostly cloudy, with a high near 25. East wind around 6 mph becoming light and variable in the afternoon. Chance of precipitation is 40%.
Saturday Night
Mostly cloudy, with a low around 14.
Sunday
A chance of rain or freezing rain after 1pm. Mostly cloudy, with a high near 32. Chance of precipitation is 50%.
Sunday Night
Freezing rain before 1am, then rain. Low around 29. Chance of precipitation is 90%.
Monday
Rain before 1pm, then a chance of rain and snow. High near 37. Chance of precipitation is 80%.
Monday Night
A chance of snow showers before 1am. Mostly cloudy, with a low around 15. Chance of precipitation is 30%.
Tuesday
Mostly cloudy, with a high near 21.
Tuesday Night
Mostly cloudy, with a low around 15.
Wednesday
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:
5:41 am EST Dec 25, 2025
Forecast Valid:
5am EST Dec 25, 2025-6pm EST Dec 31, 2025
 
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