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

58°F

14°C

Humidity 70%
Wind Speed Calm
Barometer 30.01 in (1016.4 mb)
Dewpoint 48°F (9°C)
Visibility 10.00 mi
Last update 10 Mar 9:56 pm EDT
Extended Forecast for

Tennanah Lake NY

  • Tonight

    Tonight: Partly cloudy, with a low around 50. South wind around 6 mph.

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Showers likely, mainly after 2pm. Mostly sunny, with a high near 63. South wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 63 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers, mainly after 8pm. Low around 31. South wind around 14 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 31 °F

    Showers

  • Thursday

    Thursday: A chance of snow showers before 2pm. Mostly cloudy, with a high near 42. Northwest wind 14 to 17 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.

    High: 42 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 23. Northwest wind 6 to 13 mph.

    Low: 23 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow showers after 2pm. Partly sunny, with a high near 37. Chance of precipitation is 30%.

    High: 37 °F

    Partly Sunny
    then Chance
    Snow Showers

  • Friday Night

    Friday Night: A chance of rain and snow before 2am. Mostly cloudy, with a low around 27. Chance of precipitation is 50%.

    Low: 27 °F

    Chance
    Rain/Snow

  • Saturday

    Saturday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of snow after 2am. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.

    Low: 23 °F

    Partly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Partly cloudy, with a low around 50. South wind around 6 mph.
Wednesday
Showers likely, mainly after 2pm. Mostly sunny, with a high near 63. South wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday Night
Showers, mainly after 8pm. Low around 31. South wind around 14 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A chance of snow showers before 2pm. Mostly cloudy, with a high near 42. Northwest wind 14 to 17 mph. Chance of precipitation is 40%. New snow accumulation of less than a half inch possible.
Thursday Night
Partly cloudy, with a low around 23. Northwest wind 6 to 13 mph.
Friday
A chance of snow showers after 2pm. Partly sunny, with a high near 37. Chance of precipitation is 30%.
Friday Night
A chance of rain and snow before 2am. Mostly cloudy, with a low around 27. Chance of precipitation is 50%.
Saturday
Mostly sunny, with a high near 36.
Saturday Night
A chance of snow after 2am. Mostly cloudy, with a low around 23. Chance of precipitation is 30%.
Sunday
A chance of snow before 2pm, then a chance of rain and snow. Mostly cloudy, with a high near 46. Chance of precipitation is 40%.
Sunday Night
Rain. Low around 37. Chance of precipitation is 80%.
Monday
Rain and snow. High near 51. Chance of precipitation is 80%.
Monday Night
Rain and snow likely. Mostly cloudy, with a low around 15. Chance of precipitation is 60%.
Tuesday
Partly sunny, with a high near 23.
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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:
2:12 pm EDT Mar 10, 2026
Forecast Valid:
10pm EDT Mar 10, 2026-6pm EDT Mar 17, 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