National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7°NLon: 74.8°WElev: 1404ft.

Mostly Cloudy

67°F

19°C

Humidity 63%
Wind Speed W 5 mph
Barometer 29.89 in (1011.9 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 31 Mar 9:56 pm EDT
Extended Forecast for

Tennanah Lake NY

  • Tonight

    Tonight: A chance of showers and thunderstorms, then showers likely after 2am. Mostly cloudy, with a low around 54. Southwest wind 10 to 14 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Chance
    T-storms then
    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers before noon, then a chance of showers after 2pm. Mostly cloudy, with a high near 56. Northwest wind 7 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 8pm. Mostly cloudy, with a low around 38. North wind 6 to 8 mph becoming east after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 38 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of showers. Mostly cloudy, with a high near 43. Southeast wind around 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 43 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 2am. Cloudy, with a low around 38. Southeast wind around 11 mph. Chance of precipitation is 30%.

    Low: 38 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of showers after 2pm. Partly sunny, with a high near 67. Chance of precipitation is 20%.

    High: 67 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of rain before 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 40%.

    Low: 51 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain after 2pm. Partly sunny, with a high near 70. Chance of precipitation is 40%.

    High: 70 °F

    Partly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Rain likely, mainly after 8pm. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.

    Low: 51 °F

    Rain Likely

Detailed Forecast

Tonight
A chance of showers and thunderstorms, then showers likely after 2am. Mostly cloudy, with a low around 54. Southwest wind 10 to 14 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers before noon, then a chance of showers after 2pm. Mostly cloudy, with a high near 56. Northwest wind 7 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Showers likely, mainly after 8pm. Mostly cloudy, with a low around 38. North wind 6 to 8 mph becoming east after midnight. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
A chance of showers. Mostly cloudy, with a high near 43. Southeast wind around 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of showers before 2am. Cloudy, with a low around 38. Southeast wind around 11 mph. Chance of precipitation is 30%.
Friday
A slight chance of showers after 2pm. Partly sunny, with a high near 67. Chance of precipitation is 20%.
Friday Night
A chance of rain before 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 40%.
Saturday
A chance of rain after 2pm. Partly sunny, with a high near 70. Chance of precipitation is 40%.
Saturday Night
Rain likely, mainly after 8pm. Mostly cloudy, with a low around 51. Chance of precipitation is 60%.
Sunday
Rain likely. Mostly cloudy, with a high near 60. Chance of precipitation is 70%.
Sunday Night
A chance of rain. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 42.
Monday Night
Mostly clear, with a low around 27.
Tuesday
Mostly sunny, with a high near 47.
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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 Mar 31, 2026
Forecast Valid:
10pm EDT Mar 31, 2026-6pm EDT Apr 7, 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