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.

Fair

38°F

3°C

Humidity 51%
Wind Speed NW 12 G 20 mph
Barometer 30.07 in (1019.0 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 27 Mar 12:56 pm EDT
Extended Forecast for

Tennanah Lake NY

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 37. North wind around 10 mph, with gusts as high as 20 mph.

    High: 37 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 18. North wind around 10 mph.

    Low: 18 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 30. Northwest wind around 11 mph, with gusts as high as 21 mph.

    High: 30 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 17. Northwest wind 6 to 9 mph.

    Low: 17 °F

    Partly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 45. Southwest wind 7 to 11 mph.

    High: 45 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 50.

    High: 50 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of rain after 2am. Mostly cloudy, with a low around 38. Chance of precipitation is 30%.

    Low: 38 °F

    Mostly Cloudy
    then Chance
    Rain

  • Tuesday

    Tuesday: A chance of rain. Mostly cloudy, with a high near 54. Chance of precipitation is 50%.

    High: 54 °F

    Chance Rain

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 37. North wind around 10 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 18. North wind around 10 mph.
Saturday
Mostly sunny, with a high near 30. Northwest wind around 11 mph, with gusts as high as 21 mph.
Saturday Night
Partly cloudy, with a low around 17. Northwest wind 6 to 9 mph.
Sunday
Partly sunny, with a high near 45. Southwest wind 7 to 11 mph.
Sunday Night
Partly cloudy, with a low around 32.
Monday
Mostly sunny, with a high near 50.
Monday Night
A chance of rain after 2am. Mostly cloudy, with a low around 38. Chance of precipitation is 30%.
Tuesday
A chance of rain. Mostly cloudy, with a high near 54. Chance of precipitation is 50%.
Tuesday Night
Rain likely, mainly before 2am. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Wednesday
Rain likely. Mostly cloudy, with a high near 65. Chance of precipitation is 60%.
Wednesday Night
Rain likely. Mostly cloudy, with a low around 48. Chance of precipitation is 60%.
Thursday
A chance of rain. Mostly cloudy, with a high near 62. Chance of precipitation is 40%.
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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:
11:27 am EDT Mar 27, 2026
Forecast Valid:
1pm EDT Mar 27, 2026-6pm EDT Apr 2, 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