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

44°F

7°C

Humidity 47%
Wind Speed W 5 mph
Barometer 30.13 in (1021.7 mb)
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 20 Nov 2:56 pm EST
Extended Forecast for

Tennanah Lake NY

  • This Afternoon

    This Afternoon: Sunny, with a high near 41. Calm wind.

    High: 41 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 28. Light and variable wind becoming south around 5 mph in the evening.

    Low: 28 °F

    Increasing
    Clouds

  • Friday

    Friday: Mostly cloudy, with a high near 44. Southwest wind around 6 mph.

    High: 44 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A chance of rain showers before 4am, then a chance of rain and snow showers. Cloudy, with a low around 33. West wind around 6 mph becoming northwest after midnight. Chance of precipitation is 30%. Little or no snow accumulation expected.

    Low: 33 °F

    Slight Chance
    Showers then
    Chance
    Rain/Snow

  • Saturday

    Saturday: Partly sunny, with a high near 39. Northwest wind 7 to 9 mph.

    High: 39 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 39.

    High: 39 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 41. Calm wind.
Tonight
Increasing clouds, with a low around 28. Light and variable wind becoming south around 5 mph in the evening.
Friday
Mostly cloudy, with a high near 44. Southwest wind around 6 mph.
Friday Night
A chance of rain showers before 4am, then a chance of rain and snow showers. Cloudy, with a low around 33. West wind around 6 mph becoming northwest after midnight. Chance of precipitation is 30%. Little or no snow accumulation expected.
Saturday
Partly sunny, with a high near 39. Northwest wind 7 to 9 mph.
Saturday Night
Partly cloudy, with a low around 24.
Sunday
Mostly sunny, with a high near 39.
Sunday Night
Mostly cloudy, with a low around 32.
Monday
Mostly sunny, with a high near 42.
Monday Night
Mostly cloudy, with a low around 30.
Tuesday
Rain and snow showers likely. Cloudy, with a high near 43. Chance of precipitation is 60%.
Tuesday Night
Showers likely. Cloudy, with a low around 39. Chance of precipitation is 70%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 51. Chance of precipitation is 40%.
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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 Nov 20, 2025
Forecast Valid:
3pm EST Nov 20, 2025-6pm EST Nov 26, 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