National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7°NLon: 74.8°WElev: 1404ft.

Fair

18°F

-8°C

Humidity 71%
Wind Speed W 10 mph
Barometer 30.04 in (1019.9 mb)
Dewpoint 10°F (-12°C)
Visibility 10.00 mi
Wind Chill6°F (-14°C)
Last update 2 Feb 7:56 pm EST
Extended Forecast for

Tennanah Lake NY

  • Tonight

    Tonight: Partly cloudy, with a low around 4. Wind chill values as low as -6. Northwest wind 5 to 7 mph.

    Low: 4 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 24. Wind chill values as low as -2. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 24 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 8. Wind chill values as low as -1. West wind around 6 mph becoming northwest after midnight.

    Low: 8 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 21. Wind chill values as low as -3. Northwest wind 7 to 9 mph.

    High: 21 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 7. Northwest wind around 8 mph.

    Low: 7 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 19.

    High: 19 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 3.

    Low: 3 °F

    Mostly Cloudy

  • Friday

    Friday: Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 21. Chance of precipitation is 60%.

    High: 21 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Friday Night

    Friday Night: A chance of snow showers before 1am. Mostly cloudy, with a low around -5. Chance of precipitation is 40%.

    Low: -5 °F

    Chance Snow
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 4. Wind chill values as low as -6. Northwest wind 5 to 7 mph.
Tuesday
Partly sunny, with a high near 24. Wind chill values as low as -2. Calm wind becoming southwest around 6 mph in the afternoon.
Tuesday Night
Mostly cloudy, with a low around 8. Wind chill values as low as -1. West wind around 6 mph becoming northwest after midnight.
Wednesday
Mostly sunny, with a high near 21. Wind chill values as low as -3. Northwest wind 7 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 7. Northwest wind around 8 mph.
Thursday
Partly sunny, with a high near 19.
Thursday Night
Mostly cloudy, with a low around 3.
Friday
Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 21. Chance of precipitation is 60%.
Friday Night
A chance of snow showers before 1am. Mostly cloudy, with a low around -5. Chance of precipitation is 40%.
Saturday
A chance of flurries after 1pm. Mostly sunny and cold, with a high near 3.
Saturday Night
Mostly cloudy, with a low around -5.
Sunday
A chance of flurries. Partly sunny and cold, with a high near 8.
Sunday Night
A chance of flurries. Mostly cloudy, with a low around -3.
Monday
Mostly sunny, 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:
5:43 pm EST Feb 2, 2026
Forecast Valid:
8pm EST Feb 2, 2026-6pm EST Feb 9, 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