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.

A Few Clouds

26°F

-3°C

Humidity 66%
Wind Speed W 10 mph
Barometer 30.01 in (1017.7 mb)
Dewpoint 16°F (-9°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 13 Mar 1:56 am EDT
Extended Forecast for

Tennanah Lake NY

  • Overnight

    Overnight: Partly cloudy, with a low around 21. Northwest wind 11 to 13 mph.

    Low: 21 °F

    Partly Cloudy

  • Friday

    Friday: Snow likely, mainly after 2pm. Increasing clouds, with a high near 36. West wind 7 to 14 mph becoming south in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    High: 36 °F

    Mostly Sunny
    then Snow
    Likely

  • Friday Night

    Friday Night: Snow showers likely, mainly before 10pm. Mostly cloudy, with a low around 27. South wind around 16 mph becoming west after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: 27 °F

    Snow Showers
    Likely then
    Chance Snow
    Showers

  • Saturday

    Saturday: Mostly cloudy, then gradually becoming sunny, with a high near 35. Breezy, with a west wind 14 to 21 mph, with gusts as high as 32 mph.

    High: 35 °F

    Partly Sunny
    and Breezy
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 22. Northwest wind 5 to 10 mph.

    Low: 22 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of snow before 2pm. Mostly cloudy, with a high near 39. Chance of precipitation is 20%.

    High: 39 °F

    Slight Chance
    Snow

  • Sunday Night

    Sunday Night: Rain, mainly after 2am. Low around 35. Chance of precipitation is 80%.

    Low: 35 °F

    Chance Rain
    then Rain

  • Monday

    Monday: Rain. High near 56. Chance of precipitation is 90%.

    High: 56 °F

    Rain

  • Monday Night

    Monday Night: Rain and snow likely before 2am. Mostly cloudy, with a low around 23. Chance of precipitation is 70%.

    Low: 23 °F

    Rain/Snow
    Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 21. Northwest wind 11 to 13 mph.
Friday
Snow likely, mainly after 2pm. Increasing clouds, with a high near 36. West wind 7 to 14 mph becoming south in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Friday Night
Snow showers likely, mainly before 10pm. Mostly cloudy, with a low around 27. South wind around 16 mph becoming west after midnight. Winds could gust as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Saturday
Mostly cloudy, then gradually becoming sunny, with a high near 35. Breezy, with a west wind 14 to 21 mph, with gusts as high as 32 mph.
Saturday Night
Partly cloudy, with a low around 22. Northwest wind 5 to 10 mph.
Sunday
A slight chance of snow before 2pm. Mostly cloudy, with a high near 39. Chance of precipitation is 20%.
Sunday Night
Rain, mainly after 2am. Low around 35. Chance of precipitation is 80%.
Monday
Rain. High near 56. Chance of precipitation is 90%.
Monday Night
Rain and snow likely before 2am. Mostly cloudy, with a low around 23. Chance of precipitation is 70%.
Tuesday
Partly sunny, with a high near 29.
Tuesday Night
Mostly cloudy, with a low around 14.
Wednesday
Mostly sunny, with a high near 29.
Wednesday Night
Partly cloudy, with a low around 18.
Thursday
Partly sunny, with a high near 36.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tennanah Lake NY
 41.88°N 74.95°W (Elev. 2280 ft)
Last Update:
1:16 am EDT Mar 13, 2026
Forecast Valid:
2am EDT Mar 13, 2026-6pm EDT Mar 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation