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

38°F

3°C

Humidity 100%
Wind Speed E 8 mph
Barometer 30.38 in (1029.8 mb)
Dewpoint 38°F (3°C)
Visibility 9.00 mi
Wind Chill32°F (0°C)
Last update 2 Apr 8:56 am EDT
Extended Forecast for

Tennanah Lake NY

  • Today

    Today: A chance of showers, mainly before 3pm. Mostly cloudy, with a high near 40. Southeast wind around 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 40 °F

    Chance
    Showers then
    Slight Chance
    Showers

  • Tonight

    Tonight: A chance of showers, mainly between 8pm and midnight. Cloudy, with a low around 37. Southeast wind around 14 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: Mostly cloudy, with a high near 66. South wind around 10 mph, with gusts as high as 20 mph.

    High: 66 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 48. Southwest wind 7 to 10 mph becoming northwest after midnight.

    Low: 48 °F

    Mostly Cloudy

  • Saturday

    Saturday: Showers likely, mainly after 2pm. Partly sunny, with a high near 63. North wind 5 to 8 mph becoming south in the afternoon. Chance of precipitation is 60%.

    High: 63 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 45. Chance of precipitation is 70%.

    Low: 45 °F

    Showers
    Likely

  • Sunday

    Sunday: Showers, mainly before 2pm. High near 55. Chance of precipitation is 80%.

    High: 55 °F

    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 30.

    Low: 30 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 41.

    High: 41 °F

    Partly Sunny

Detailed Forecast

Today
A chance of showers, mainly before 3pm. Mostly cloudy, with a high near 40. Southeast wind around 10 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
A chance of showers, mainly between 8pm and midnight. Cloudy, with a low around 37. Southeast wind around 14 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Mostly cloudy, with a high near 66. South wind around 10 mph, with gusts as high as 20 mph.
Friday Night
Mostly cloudy, with a low around 48. Southwest wind 7 to 10 mph becoming northwest after midnight.
Saturday
Showers likely, mainly after 2pm. Partly sunny, with a high near 63. North wind 5 to 8 mph becoming south in the afternoon. Chance of precipitation is 60%.
Saturday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 45. Chance of precipitation is 70%.
Sunday
Showers, mainly before 2pm. High near 55. Chance of precipitation is 80%.
Sunday Night
Mostly cloudy, with a low around 30.
Monday
Partly sunny, with a high near 41.
Monday Night
Partly cloudy, with a low around 27.
Tuesday
A chance of snow showers. Partly sunny, with a high near 38. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 20.
Wednesday
Sunny, with a high near 44.
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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:
4:59 am EDT Apr 2, 2026
Forecast Valid:
9am EDT Apr 2, 2026-6pm EDT Apr 8, 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