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

44°F

7°C

Humidity 63%
Wind Speed NW 12 mph
Barometer 29.93 in (1014.2 mb)
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 21 Mar 12:56 pm EDT
Extended Forecast for

Tennanah Lake NY

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 43. North wind around 9 mph.

    High: 43 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of rain and snow showers before 5am, then a slight chance of drizzle. Mostly cloudy, with a low around 35. Light and variable wind becoming south 5 to 10 mph in the evening. Chance of precipitation is 20%.

    Low: 35 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Sunday

    Sunday: A chance of showers or drizzle before 8am, then showers likely, mainly after 11am. Mostly cloudy, with a high near 56. South wind 8 to 11 mph becoming west in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 56 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Rain showers before 2am, then a chance of rain and snow showers. Low around 30. North wind around 9 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 30 °F

    Showers then
    Rain/Snow

  • Monday

    Monday: A chance of snow showers, mainly before 8am. Partly sunny, with a high near 37. Northwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.

    High: 37 °F

    Chance Snow
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 41.

    High: 41 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 43. North wind around 9 mph.
Tonight
A slight chance of rain and snow showers before 5am, then a slight chance of drizzle. Mostly cloudy, with a low around 35. Light and variable wind becoming south 5 to 10 mph in the evening. Chance of precipitation is 20%.
Sunday
A chance of showers or drizzle before 8am, then showers likely, mainly after 11am. Mostly cloudy, with a high near 56. South wind 8 to 11 mph becoming west in the afternoon. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain showers before 2am, then a chance of rain and snow showers. Low around 30. North wind around 9 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Monday
A chance of snow showers, mainly before 8am. Partly sunny, with a high near 37. Northwest wind around 11 mph, with gusts as high as 21 mph. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 22.
Tuesday
Sunny, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 28.
Wednesday
Partly sunny, with a high near 42.
Wednesday Night
A chance of rain and snow after 2am. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.
Thursday
A chance of rain and snow. Mostly cloudy, with a high near 44. Chance of precipitation is 30%.
Thursday Night
Rain and snow likely. Mostly cloudy, with a low around 29. Chance of precipitation is 70%.
Friday
Rain and snow likely. Partly sunny, with a high near 37. Chance of precipitation is 60%.
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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:
12:41 pm EDT Mar 21, 2026
Forecast Valid:
1pm EDT Mar 21, 2026-6pm EDT Mar 27, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation