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.

Light Rain Fog/Mist and Breezy

55°F

13°C

Humidity 87%
Wind Speed NW 22 G 36 mph
Barometer 29.54 in (1000.0 mb)
Dewpoint 51°F (11°C)
Visibility 5.00 mi
Wind Chill50°F (10°C)
Last update 12 Mar 4:56 am EDT
Extended Forecast for

Tennanah Lake NY

  • Overnight

    Overnight: Showers likely. Mostly cloudy, with a steady temperature around 49. Northwest wind around 17 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 49 °F

    Showers
    Likely

  • Thursday

    Thursday: A chance of rain and snow showers before noon, then a slight chance of snow showers after 3pm. Mostly cloudy, with a temperature falling to around 29 by 11am. Northwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.

    High: 33 °F⇓

    Chance
    Rain/Snow
    then Isolated
    Snow Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 21. Northwest wind 10 to 15 mph.

    Low: 21 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of snow showers, mainly after 2pm. Increasing clouds, with a high near 36. South wind 6 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 36 °F

    Slight Chance
    Snow Showers
    then Chance
    Snow Showers

  • Friday Night

    Friday Night: A chance of snow showers, mixing with rain after 11pm, then gradually ending. Mostly cloudy, with a low around 28. South wind around 14 mph becoming west after midnight. Chance of precipitation is 40%.

    Low: 28 °F

    Chance
    Rain/Snow

  • Saturday

    Saturday: Mostly sunny, with a high near 36.

    High: 36 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 23.

    Low: 23 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of snow before 2pm. Mostly cloudy, with a high near 40. Chance of precipitation is 30%.

    High: 40 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Rain likely, mainly after 2am. Mostly cloudy, with a low around 35. Chance of precipitation is 70%.

    Low: 35 °F

    Chance Rain
    then Rain
    Likely

Detailed Forecast

Overnight
Showers likely. Mostly cloudy, with a steady temperature around 49. Northwest wind around 17 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A chance of rain and snow showers before noon, then a slight chance of snow showers after 3pm. Mostly cloudy, with a temperature falling to around 29 by 11am. Northwest wind 14 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 30%. Little or no snow accumulation expected.
Thursday Night
Mostly cloudy, with a low around 21. Northwest wind 10 to 15 mph.
Friday
A chance of snow showers, mainly after 2pm. Increasing clouds, with a high near 36. South wind 6 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Friday Night
A chance of snow showers, mixing with rain after 11pm, then gradually ending. Mostly cloudy, with a low around 28. South wind around 14 mph becoming west after midnight. Chance of precipitation is 40%.
Saturday
Mostly sunny, with a high near 36.
Saturday Night
Mostly cloudy, with a low around 23.
Sunday
A chance of snow before 2pm. Mostly cloudy, with a high near 40. Chance of precipitation is 30%.
Sunday Night
Rain likely, mainly after 2am. Mostly cloudy, with a low around 35. Chance of precipitation is 70%.
Monday
Rain. High near 55. Chance of precipitation is 90%.
Monday Night
Rain and snow likely. Mostly cloudy, with a low around 21. Chance of precipitation is 60%.
Tuesday
Partly sunny, with a high near 26.
Tuesday Night
Mostly cloudy, with a low around 14.
Wednesday
Partly sunny, with a high near 28.
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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:
4:57 am EDT Mar 12, 2026
Forecast Valid:
5am EDT Mar 12, 2026-6pm EDT Mar 18, 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