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

27°F

-3°C

Humidity 51%
Wind Speed NW 10 G 21 mph
Barometer 29.98 in (1017.7 mb)
Dewpoint 11°F (-12°C)
Visibility 10.00 mi
Wind Chill18°F (-8°C)
Last update 2 Feb 3:56 pm EST
Extended Forecast for

Tennanah Lake NY

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 20. Northwest wind around 9 mph.

    High: 20 °F

    Mostly Sunny

  • 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. Northwest wind 7 to 9 mph.

    High: 21 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 7.

    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

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 20. Northwest wind around 9 mph.
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. Northwest wind 7 to 9 mph.
Wednesday Night
Mostly cloudy, with a low around 7.
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. 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.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tennanah Lake NY
 41.88°N 74.95°W (Elev. 2280 ft)
Last Update:
3:22 pm EST Feb 2, 2026
Forecast Valid:
4pm EST Feb 2, 2026-6pm EST Feb 8, 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