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.

Overcast

38°F

3°C

Humidity 73%
Wind Speed Calm
Barometer 30.15 in (1021.8 mb)
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 30 Mar 7:56 am EDT
Extended Forecast for

Tennanah Lake NY

  • Today

    Today: A slight chance of showers after 3pm. Increasing clouds, with a high near 56. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    High: 56 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: Showers likely, mainly after 2am. Mostly cloudy, with a low around 48. West wind around 9 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday

    Tuesday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 63. Southwest wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 63 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 54. Southwest wind 10 to 14 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday

    Wednesday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 60. Southwest wind 10 to 13 mph. Chance of precipitation is 70%.

    High: 60 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers. Mostly cloudy, with a low around 41. Chance of precipitation is 50%.

    Low: 41 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers. Mostly cloudy, with a high near 50. Chance of precipitation is 50%.

    High: 50 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers. Mostly cloudy, with a low around 43. Chance of precipitation is 50%.

    Low: 43 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers. Mostly cloudy, with a high near 64. Chance of precipitation is 50%.

    High: 64 °F

    Chance
    Showers

Detailed Forecast

Today
A slight chance of showers after 3pm. Increasing clouds, with a high near 56. Southwest wind around 10 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Tonight
Showers likely, mainly after 2am. Mostly cloudy, with a low around 48. West wind around 9 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 63. Southwest wind around 9 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 54. Southwest wind 10 to 14 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 60. Southwest wind 10 to 13 mph. Chance of precipitation is 70%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 41. Chance of precipitation is 50%.
Thursday
A chance of showers. Mostly cloudy, with a high near 50. Chance of precipitation is 50%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 43. Chance of precipitation is 50%.
Friday
A chance of showers. Mostly cloudy, with a high near 64. Chance of precipitation is 50%.
Friday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.
Saturday
A chance of showers. Mostly cloudy, with a high near 64. Chance of precipitation is 50%.
Saturday Night
Showers likely. Mostly cloudy, with a low around 45. Chance of precipitation is 60%.
Sunday
Showers likely. Mostly cloudy, with a high near 56. Chance of precipitation is 60%.
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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:
7:11 am EDT Mar 30, 2026
Forecast Valid:
8am EDT Mar 30, 2026-6pm EDT Apr 5, 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