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.

Partly Cloudy

18°F

-8°C

Humidity 88%
Wind Speed N 3 mph
Barometer 30.47 in (1033.9 mb)
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Last update 29 Mar 4:56 am EDT
Extended Forecast for

Tennanah Lake NY

  • Today

    Today: Mostly sunny, with a high near 46. Southwest wind 6 to 13 mph.

    High: 46 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 34. South wind around 9 mph.

    Low: 34 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 53. Southwest wind 8 to 13 mph.

    High: 53 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of showers, mainly after 2am. Mostly cloudy, with a low around 46. Southwest wind 7 to 9 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 46 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers. Mostly cloudy, with a high near 63. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.

    High: 63 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.

    Low: 53 °F

    Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.

    High: 64 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of rain showers before 2am, then a chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a low around 37. Chance of precipitation is 50%.

    Low: 37 °F

    Chance
    T-storms then
    Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of rain and snow showers before 8am, then a chance of rain showers. Mostly cloudy, with a high near 48. Chance of precipitation is 50%.

    High: 48 °F

    Chance
    Rain/Snow
    then Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 46. Southwest wind 6 to 13 mph.
Tonight
Partly cloudy, with a low around 34. South wind around 9 mph.
Monday
Partly sunny, with a high near 53. Southwest wind 8 to 13 mph.
Monday Night
A chance of showers, mainly after 2am. Mostly cloudy, with a low around 46. Southwest wind 7 to 9 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
A chance of showers. Mostly cloudy, with a high near 63. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.
Wednesday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
Wednesday Night
A chance of rain showers before 2am, then a chance of rain and snow showers. Some thunder is also possible. Mostly cloudy, with a low around 37. Chance of precipitation is 50%.
Thursday
A chance of rain and snow showers before 8am, then a chance of rain showers. Mostly cloudy, with a high near 48. Chance of precipitation is 50%.
Thursday Night
Rain showers likely before 2am, then rain or freezing rain likely. Mostly cloudy, with a low around 36. Chance of precipitation is 70%.
Friday
Rain or freezing rain likely. Mostly cloudy, with a high near 47. Chance of precipitation is 70%.
Friday Night
Showers likely. Cloudy, with a low around 39. Chance of precipitation is 60%.
Saturday
A chance of showers. Mostly cloudy, with a high near 52. Chance of precipitation is 50%.
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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:
4:57 am EDT Mar 29, 2026
Forecast Valid:
5am EDT Mar 29, 2026-6pm EDT Apr 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