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

25°F

-4°C

Humidity 88%
Wind Speed Calm
Barometer 30.35 in (1029.3 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Last update 25 Mar 7:56 am EDT
Extended Forecast for

Tennanah Lake NY

  • Today

    Today: Partly sunny, with a high near 46. Light and variable wind becoming south 5 to 7 mph in the afternoon.

    High: 46 °F

    Partly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 35. South wind around 10 mph.

    Low: 35 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of rain after 2pm. Partly sunny, with a high near 59. Southwest wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 59 °F

    Partly Sunny
    then Chance
    Rain

  • Thursday Night

    Thursday Night: Rain before 5am, then rain, possibly mixed with snow. Low around 33. Southwest wind around 14 mph becoming northwest after midnight. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 33 °F

    Rain then
    Rain/Snow

  • Friday

    Friday: Partly sunny, with a high near 37. Northwest wind 11 to 16 mph.

    High: 37 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 17.

    Low: 17 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 31.

    High: 31 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 21.

    Low: 21 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

Detailed Forecast

Today
Partly sunny, with a high near 46. Light and variable wind becoming south 5 to 7 mph in the afternoon.
Tonight
Mostly cloudy, with a low around 35. South wind around 10 mph.
Thursday
A chance of rain after 2pm. Partly sunny, with a high near 59. Southwest wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Rain before 5am, then rain, possibly mixed with snow. Low around 33. Southwest wind around 14 mph becoming northwest after midnight. Chance of precipitation is 90%. Little or no snow accumulation expected.
Friday
Partly sunny, with a high near 37. Northwest wind 11 to 16 mph.
Friday Night
Mostly clear, with a low around 17.
Saturday
Mostly sunny, with a high near 31.
Saturday Night
Partly cloudy, with a low around 21.
Sunday
Mostly sunny, with a high near 41.
Sunday Night
Mostly cloudy, with a low around 29.
Monday
Mostly cloudy, with a high near 47.
Monday Night
A chance of rain and snow. Mostly cloudy, with a low around 37. Chance of precipitation is 30%.
Tuesday
A chance of rain and snow. Partly sunny, with a high near 51. 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:
6:22 am EDT Mar 25, 2026
Forecast Valid:
8am EDT Mar 25, 2026-6pm EDT Mar 31, 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