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.

Fog/Mist

33°F

1°C

Humidity 100%
Wind Speed W 6 mph
Barometer 30.18 in (1023.7 mb)
Dewpoint 33°F (1°C)
Visibility 2.00 mi
Wind Chill27°F (-3°C)
Last update 4 Mar 4:56 am EST
Extended Forecast for

Tennanah Lake NY

  • Today

    Today: Mostly cloudy through mid morning, then gradual clearing, with a high near 47. Northwest wind around 6 mph becoming calm in the morning.

    High: 47 °F

    Becoming
    Sunny

  • Tonight

    Tonight: A chance of rain, mainly after 4am. Increasing clouds, with a low around 31. Light southeast wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 31 °F

    Partly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Rain, mainly after 1pm. High near 41. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    High: 41 °F

    Chance Rain
    then Rain

  • Thursday Night

    Thursday Night: Rain. Low around 32. Southeast wind 9 to 11 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 32 °F

    Rain

  • Friday

    Friday: A chance of rain before 1pm. Mostly cloudy, with a high near 37. Southeast wind 6 to 8 mph. Chance of precipitation is 30%.

    High: 37 °F

    Chance Rain

  • Friday Night

    Friday Night: A chance of showers. Mostly cloudy, with a low around 36. Chance of precipitation is 30%.

    Low: 36 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers after 1pm. Mostly cloudy, with a high near 57. Chance of precipitation is 50%.

    High: 57 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Rain likely before 1am. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.

    Low: 37 °F

    Rain Likely

  • Sunday

    Sunday: Mostly sunny, with a high near 49.

    High: 49 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy through mid morning, then gradual clearing, with a high near 47. Northwest wind around 6 mph becoming calm in the morning.
Tonight
A chance of rain, mainly after 4am. Increasing clouds, with a low around 31. Light southeast wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Rain, mainly after 1pm. High near 41. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Low around 32. Southeast wind 9 to 11 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
A chance of rain before 1pm. Mostly cloudy, with a high near 37. Southeast wind 6 to 8 mph. Chance of precipitation is 30%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 36. Chance of precipitation is 30%.
Saturday
A chance of showers after 1pm. Mostly cloudy, with a high near 57. Chance of precipitation is 50%.
Saturday Night
Rain likely before 1am. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.
Sunday
Mostly sunny, with a high near 49.
Sunday Night
Partly cloudy, with a low around 34.
Monday
Sunny, with a high near 56.
Monday Night
Mostly clear, with a low around 39.
Tuesday
Mostly sunny, with a high near 62.
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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:
1:30 am EST Mar 4, 2026
Forecast Valid:
5am EST Mar 4, 2026-6pm EDT Mar 10, 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