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.

A Few Clouds

32°F

0°C

Humidity 61%
Wind Speed NW 9 G 17 mph
Barometer 29.85 in (1012.2 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 26 Feb 10:56 am EST
Extended Forecast for

Tennanah Lake NY

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 30. West wind around 6 mph.

    High: 30 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 13. North wind around 6 mph becoming light and variable in the evening.

    Low: 13 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 38. Southwest wind 3 to 6 mph.

    High: 38 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26. South wind 7 to 9 mph.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 44. South wind 7 to 9 mph becoming west in the afternoon.

    High: 44 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A slight chance of snow after 1am. Mostly cloudy, with a low around 21. Chance of precipitation is 20%.

    Low: 21 °F

    Partly Cloudy
    then Slight
    Chance Snow

  • Sunday

    Sunday: A chance of snow before 1pm. Partly sunny, with a high near 24. Chance of precipitation is 30%.

    High: 24 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 6.

    Low: 6 °F

    Partly Cloudy

  • Monday

    Monday: A chance of snow before 1pm. Mostly cloudy, with a high near 20. Chance of precipitation is 30%.

    High: 20 °F

    Chance Snow

Detailed Forecast

This Afternoon
Partly sunny, with a high near 30. West wind around 6 mph.
Tonight
Mostly clear, with a low around 13. North wind around 6 mph becoming light and variable in the evening.
Friday
Sunny, with a high near 38. Southwest wind 3 to 6 mph.
Friday Night
Mostly clear, with a low around 26. South wind 7 to 9 mph.
Saturday
Mostly sunny, with a high near 44. South wind 7 to 9 mph becoming west in the afternoon.
Saturday Night
A slight chance of snow after 1am. Mostly cloudy, with a low around 21. Chance of precipitation is 20%.
Sunday
A chance of snow before 1pm. Partly sunny, with a high near 24. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 6.
Monday
A chance of snow before 1pm. Mostly cloudy, with a high near 20. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 6.
Tuesday
Partly sunny, with a high near 29.
Tuesday Night
A chance of snow. Mostly cloudy, with a low around 20. Chance of precipitation is 40%.
Wednesday
A chance of rain. Mostly cloudy, with a high near 36. Chance of precipitation is 30%.
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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:
11:49 am EST Feb 26, 2026
Forecast Valid:
12pm EST Feb 26, 2026-6pm EST Mar 4, 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