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

30°F

-1°C

Humidity 69%
Wind Speed SW 6 mph
Barometer 30.03 in (1018.6 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill24°F (-4°C)
Last update 12 Jan 5:56 pm EST
Extended Forecast for

Tennanah Lake NY

  • Tonight

    Tonight: Partly cloudy, with a low around 24. West wind 7 to 10 mph.

    Low: 24 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 35. West wind 6 to 8 mph becoming south in the afternoon.

    High: 35 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A slight chance of rain and snow showers between 1am and 4am, then a slight chance of snow showers after 4am. Mostly cloudy, with a low around 31. South wind 8 to 10 mph. Chance of precipitation is 20%.

    Low: 31 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Wednesday

    Wednesday: A chance of snow showers before 7am, then rain likely, possibly mixed with snow showers. Mostly cloudy, with a high near 37. South wind around 7 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 37 °F

    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Snow showers, possibly mixed with rain, becoming all snow after 4am. Low around 19. South wind 6 to 9 mph becoming northwest after midnight. Chance of precipitation is 80%.

    Low: 19 °F

    Rain/Snow

  • Thursday

    Thursday: Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 27. Chance of precipitation is 60%.

    High: 27 °F

    Snow Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of snow showers before 1am. Mostly cloudy, with a low around 8. Chance of precipitation is 30%.

    Low: 8 °F

    Chance Snow
    Showers

  • Friday

    Friday: Partly sunny, with a high near 20.

    High: 20 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 13.

    Low: 13 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 24. West wind 7 to 10 mph.
Tuesday
Mostly sunny, with a high near 35. West wind 6 to 8 mph becoming south in the afternoon.
Tuesday Night
A slight chance of rain and snow showers between 1am and 4am, then a slight chance of snow showers after 4am. Mostly cloudy, with a low around 31. South wind 8 to 10 mph. Chance of precipitation is 20%.
Wednesday
A chance of snow showers before 7am, then rain likely, possibly mixed with snow showers. Mostly cloudy, with a high near 37. South wind around 7 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Wednesday Night
Snow showers, possibly mixed with rain, becoming all snow after 4am. Low around 19. South wind 6 to 9 mph becoming northwest after midnight. Chance of precipitation is 80%.
Thursday
Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 27. Chance of precipitation is 60%.
Thursday Night
A chance of snow showers before 1am. Mostly cloudy, with a low around 8. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 20.
Friday Night
Mostly cloudy, with a low around 13.
Saturday
Partly sunny, with a high near 28.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 15. Chance of precipitation is 30%.
Sunday
A chance of snow showers. Partly sunny, with a high near 23. Chance of precipitation is 30%.
Sunday Night
Mostly cloudy, with a low around 9.
M.L.King Day
Partly sunny, with a high near 18.
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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 EST Jan 12, 2026
Forecast Valid:
6pm EST Jan 12, 2026-6pm EST Jan 19, 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