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

63°F

17°C

Humidity 84%
Wind Speed W 9 mph
Barometer 30.06 in (1017.4 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 1 Apr 11:56 am EDT
Extended Forecast for

Tennanah Lake NY

  • This Afternoon

    This Afternoon: A slight chance of showers before 1pm, then a chance of showers after 3pm. Mostly cloudy, with a high near 58. Northwest wind around 8 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 58 °F

    Chance
    Showers

  • Tonight

    Tonight: Showers. Low around 40. North wind around 8 mph becoming east after midnight. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 40 °F

    Showers

  • Thursday

    Thursday: A chance of showers, mainly between noon and 3pm. Mostly cloudy, with a high near 41. East wind around 10 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 41 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers, mainly between 8pm and 2am. Cloudy, with a low around 37. Southeast wind 11 to 13 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of showers after 2pm. Mostly cloudy, with a high near 66. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    High: 66 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.

    Low: 50 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers after 2pm. Partly sunny, with a high near 69. Chance of precipitation is 50%.

    High: 69 °F

    Partly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.

    Low: 49 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers. High near 58. Chance of precipitation is 80%.

    High: 58 °F

    Showers

Detailed Forecast

This Afternoon
A slight chance of showers before 1pm, then a chance of showers after 3pm. Mostly cloudy, with a high near 58. Northwest wind around 8 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Showers. Low around 40. North wind around 8 mph becoming east after midnight. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
A chance of showers, mainly between noon and 3pm. Mostly cloudy, with a high near 41. East wind around 10 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
A chance of showers, mainly between 8pm and 2am. Cloudy, with a low around 37. Southeast wind 11 to 13 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
A slight chance of showers after 2pm. Mostly cloudy, with a high near 66. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Friday Night
A chance of showers, mainly between 8pm and 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 30%.
Saturday
A chance of showers after 2pm. Partly sunny, with a high near 69. Chance of precipitation is 50%.
Saturday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 60%.
Sunday
Showers. High near 58. Chance of precipitation is 80%.
Sunday Night
A chance of showers before 2am. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 41.
Monday Night
Partly cloudy, with a low around 27.
Tuesday
A chance of showers. Partly sunny, with a high near 42. 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:
12:47 pm EDT Apr 1, 2026
Forecast Valid:
12pm EDT Apr 1, 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