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

30°F

-1°C

Humidity 39%
Wind Speed NW 9 G 18 mph
Barometer 30.26 in (1026.6 mb)
Dewpoint 8°F (-13°C)
Visibility NA
Wind Chill22°F (-6°C)
Last update 1 Mar 4:56 pm EST
Extended Forecast for

Tennanah Lake NY

  • Tonight

    Tonight: Clear, with a low around 2. Wind chill values as low as -9. Northwest wind 6 to 11 mph.

    Low: 2 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 25. Wind chill values as low as -8. Northwest wind around 5 mph becoming light and variable.

    High: 25 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 14. South wind 6 to 8 mph.

    Low: 14 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Snow, possibly mixed with sleet before 4pm, then rain, possibly mixed with snow. High near 33. South wind around 7 mph. Chance of precipitation is 80%. New snow and sleet accumulation of less than one inch possible.

    High: 33 °F

    Wintry Mix

  • Tuesday Night

    Tuesday Night: Rain and freezing rain, possibly mixed with snow before 7pm, then freezing rain between 7pm and 10pm, then rain after 10pm. Low around 30. South wind around 7 mph becoming northwest after midnight. Chance of precipitation is 80%.

    Low: 30 °F

    Wintry Mix
    then Rain

  • Wednesday

    Wednesday: A chance of rain, mainly after 1pm. Partly sunny, with a high near 45. Chance of precipitation is 30%.

    High: 45 °F

    Chance Rain

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after 1am. Mostly cloudy, with a low around 37. Chance of precipitation is 60%.

    Low: 37 °F

    Rain Likely

  • Thursday

    Thursday: Rain likely, mainly before 1pm. Mostly cloudy, with a high near 51. Chance of precipitation is 60%.

    High: 51 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely. Mostly cloudy, with a low around 40. Chance of precipitation is 70%.

    Low: 40 °F

    Rain Likely

Detailed Forecast

Tonight
Clear, with a low around 2. Wind chill values as low as -9. Northwest wind 6 to 11 mph.
Monday
Sunny, with a high near 25. Wind chill values as low as -8. Northwest wind around 5 mph becoming light and variable.
Monday Night
Increasing clouds, with a low around 14. South wind 6 to 8 mph.
Tuesday
Snow, possibly mixed with sleet before 4pm, then rain, possibly mixed with snow. High near 33. South wind around 7 mph. Chance of precipitation is 80%. New snow and sleet accumulation of less than one inch possible.
Tuesday Night
Rain and freezing rain, possibly mixed with snow before 7pm, then freezing rain between 7pm and 10pm, then rain after 10pm. Low around 30. South wind around 7 mph becoming northwest after midnight. Chance of precipitation is 80%.
Wednesday
A chance of rain, mainly after 1pm. Partly sunny, with a high near 45. Chance of precipitation is 30%.
Wednesday Night
Rain likely, mainly after 1am. Mostly cloudy, with a low around 37. Chance of precipitation is 60%.
Thursday
Rain likely, mainly before 1pm. Mostly cloudy, with a high near 51. Chance of precipitation is 60%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 40. Chance of precipitation is 70%.
Friday
A chance of rain. Mostly cloudy, with a high near 46. Chance of precipitation is 50%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 40. Chance of precipitation is 40%.
Saturday
A chance of rain. Mostly cloudy, with a high near 60. Chance of precipitation is 50%.
Saturday Night
Rain likely. Mostly cloudy, with a low around 39. Chance of precipitation is 60%.
Sunday
A chance of rain. Partly sunny, with a high near 54. Chance of precipitation is 30%.
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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:
3:22 pm EST Mar 1, 2026
Forecast Valid:
5pm EST Mar 1, 2026-6pm EDT Mar 8, 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