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.

Fair

49°F

9°C

Humidity 90%
Wind Speed N 3 mph
Barometer 29.99 in (1015.1 mb)
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Last update 11 Mar 2:56 am EDT
Extended Forecast for

Tennanah Lake NY

  • Overnight

    Overnight: Mostly cloudy, with a low around 49. South wind around 5 mph.

    Low: 49 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly before 2pm, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 65. Southeast wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 65 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms. Low around 31. Southwest wind 13 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 31 °F

    Showers

  • Thursday

    Thursday: Rain showers, snow showers, and sleet likely before 8am, then a slight chance of snow showers between 8am and 2pm. Mostly cloudy, with a high near 35. Northwest wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow and sleet accumulation of less than a half inch possible.

    High: 35 °F

    Wintry Mix
    Likely then
    Slight Chance
    Snow Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 22. West wind 9 to 14 mph.

    Low: 22 °F

    Partly Cloudy

  • Friday

    Friday: A chance of rain and snow showers after 2pm. Partly sunny, with a high near 38. Chance of precipitation is 30%.

    High: 38 °F

    Partly Sunny
    then Chance
    Rain/Snow

  • Friday Night

    Friday Night: A chance of rain and snow showers before 11pm, then a chance of snow showers between 11pm and 2am. Mostly cloudy, with a low around 27. Chance of precipitation is 50%.

    Low: 27 °F

    Chance
    Rain/Snow
    then Chance
    Snow Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 34.

    High: 34 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 22.

    Low: 22 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 49. South wind around 5 mph.
Wednesday
Showers and thunderstorms likely, mainly before 2pm, then showers likely and possibly a thunderstorm after 3pm. Partly sunny, with a high near 65. Southeast wind 8 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Showers and thunderstorms. Low around 31. Southwest wind 13 to 15 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
Rain showers, snow showers, and sleet likely before 8am, then a slight chance of snow showers between 8am and 2pm. Mostly cloudy, with a high near 35. Northwest wind 14 to 18 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow and sleet accumulation of less than a half inch possible.
Thursday Night
Partly cloudy, with a low around 22. West wind 9 to 14 mph.
Friday
A chance of rain and snow showers after 2pm. Partly sunny, with a high near 38. Chance of precipitation is 30%.
Friday Night
A chance of rain and snow showers before 11pm, then a chance of snow showers between 11pm and 2am. Mostly cloudy, with a low around 27. Chance of precipitation is 50%.
Saturday
Mostly sunny, with a high near 34.
Saturday Night
Mostly cloudy, with a low around 22.
Sunday
A chance of snow after 8am, mixing with rain after 2pm. Mostly cloudy, with a high near 42. Chance of precipitation is 30%.
Sunday Night
Rain and snow. Low around 33. Chance of precipitation is 80%.
Monday
Rain and snow. High near 52. Chance of precipitation is 80%.
Monday Night
Rain and snow likely. Mostly cloudy, with a low around 18. Chance of precipitation is 60%.
Tuesday
Partly sunny, with a high near 25.
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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:
2:30 am EDT Mar 11, 2026
Forecast Valid:
3am EDT Mar 11, 2026-6pm EDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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