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.

Overcast

44°F

7°C

Humidity 41%
Wind Speed NW 15 G 20 mph
Barometer 30.01 in (1017.1 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 6 Apr 2:56 pm EDT
Extended Forecast for

Tennanah Lake NY

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 39. Northwest wind around 13 mph, with gusts as high as 25 mph.

    High: 39 °F

    Mostly Cloudy

  • Tonight

    Tonight: A chance of snow showers, mainly after 10pm. Mostly cloudy, with a low around 29. Northwest wind 5 to 7 mph becoming southeast after midnight. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.

    Low: 29 °F

    Chance Snow
    Showers

  • Tuesday

    Tuesday: A slight chance of snow showers after 2pm. Partly sunny, with a high near 35. Northwest wind around 16 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.

    High: 35 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 16. Northwest wind 7 to 13 mph.

    Low: 16 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 45. Light and variable wind becoming south around 6 mph in the afternoon.

    High: 45 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 25.

    Low: 25 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 51.

    High: 51 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 31.

    Low: 31 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 62.

    High: 62 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 39. Northwest wind around 13 mph, with gusts as high as 25 mph.
Tonight
A chance of snow showers, mainly after 10pm. Mostly cloudy, with a low around 29. Northwest wind 5 to 7 mph becoming southeast after midnight. Chance of precipitation is 50%. New snow accumulation of less than one inch possible.
Tuesday
A slight chance of snow showers after 2pm. Partly sunny, with a high near 35. Northwest wind around 16 mph, with gusts as high as 29 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 16. Northwest wind 7 to 13 mph.
Wednesday
Sunny, with a high near 45. Light and variable wind becoming south around 6 mph in the afternoon.
Wednesday Night
Mostly clear, with a low around 25.
Thursday
Mostly sunny, with a high near 51.
Thursday Night
Partly cloudy, with a low around 31.
Friday
Sunny, with a high near 62.
Friday Night
A chance of showers. Mostly cloudy, with a low around 43. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 54.
Saturday Night
Mostly clear, with a low around 33.
Sunday
Mostly sunny, with a high near 57.
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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:
3:23 pm EDT Apr 6, 2026
Forecast Valid:
3pm EDT Apr 6, 2026-6pm EDT Apr 12, 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