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

43°F

6°C

Humidity 25%
Wind Speed N 5 mph
Barometer 30.52 in (1035.2 mb)
Dewpoint 9°F (-13°C)
Visibility 10.00 mi
Wind Chill40°F (4°C)
Last update 8 Apr 1:56 pm EDT
Extended Forecast for

Tennanah Lake NY

Red Flag Warning April 9, 12:00pm until April 9, 06:00pm
Click here for hazard details and duration
Red Flag Warning

  • This Afternoon

    This Afternoon: Sunny, with a high near 45. South wind around 5 mph.

    High: 45 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 26. South wind around 7 mph.

    Low: 26 °F

    Clear

  • Thursday

    Thursday: Sunny, with a high near 52. South wind 8 to 11 mph, with gusts as high as 22 mph.

    High: 52 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 33. South wind 7 to 10 mph.

    Low: 33 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers after 2pm. Mostly sunny, with a high near 63. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 63 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: Rain showers likely before 5am, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 35. Chance of precipitation is 70%.

    Low: 35 °F

    Showers
    Likely then
    Rain/Snow
    Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 28.

    Low: 28 °F

    Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 45. South wind around 5 mph.
Tonight
Clear, with a low around 26. South wind around 7 mph.
Thursday
Sunny, with a high near 52. South wind 8 to 11 mph, with gusts as high as 22 mph.
Thursday Night
Mostly clear, with a low around 33. South wind 7 to 10 mph.
Friday
A slight chance of showers after 2pm. Mostly sunny, with a high near 63. Southwest wind 5 to 10 mph. Chance of precipitation is 20%.
Friday Night
Rain showers likely before 5am, then a slight chance of rain and snow showers. Mostly cloudy, with a low around 35. Chance of precipitation is 70%.
Saturday
Mostly sunny, with a high near 48.
Saturday Night
Clear, with a low around 28.
Sunday
Mostly sunny, with a high near 56.
Sunday Night
Mostly cloudy, with a low around 42.
Monday
Partly sunny, with a high near 67.
Monday Night
A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 30%.
Tuesday
A chance of showers. Partly sunny, with a high near 73. Chance of precipitation is 30%.
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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:
1:42 pm EDT Apr 8, 2026
Forecast Valid:
2pm EDT Apr 8, 2026-6pm EDT Apr 14, 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