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.

Rain Fog/Mist

63°F

17°C

Humidity 97%
Wind Speed E 7 mph
Barometer 29.84 in (1009.8 mb)
Dewpoint 62°F (17°C)
Visibility 3.00 mi
Last update 23 Aug 5:56 am EDT
Extended Forecast for

Tennanah Lake NY

  • Today

    Today: Showers and thunderstorms, mainly before 4pm. High near 72. Southeast wind 6 to 9 mph becoming west in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 72 °F

    Showers then
    Scattered
    Showers

  • Tonight

    Tonight: Partly cloudy, with a low around 52. West wind around 5 mph becoming calm in the evening.

    Low: 52 °F

    Partly Cloudy

  • Monday

    Monday: Isolated showers before 11am, then isolated showers after 2pm. Partly sunny, with a high near 68. Light southwest wind becoming west 5 to 10 mph in the morning. Chance of precipitation is 20%.

    High: 68 °F

    Isolated
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 52. West wind around 6 mph.

    Low: 52 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Isolated showers after 2pm. Partly sunny, with a high near 68. West wind around 8 mph. Chance of precipitation is 20%.

    High: 68 °F

    Partly Sunny
    then Isolated
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 51.

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 75. Chance of precipitation is 60%.

    High: 75 °F

    Showers
    Likely

Detailed Forecast

Today
Showers and thunderstorms, mainly before 4pm. High near 72. Southeast wind 6 to 9 mph becoming west in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Partly cloudy, with a low around 52. West wind around 5 mph becoming calm in the evening.
Monday
Isolated showers before 11am, then isolated showers after 2pm. Partly sunny, with a high near 68. Light southwest wind becoming west 5 to 10 mph in the morning. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, with a low around 52. West wind around 6 mph.
Tuesday
Isolated showers after 2pm. Partly sunny, with a high near 68. West wind around 8 mph. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 51.
Wednesday
Mostly sunny, with a high near 74.
Wednesday Night
Partly cloudy, with a low around 56.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 75. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Friday
A chance of showers. Partly sunny, with a high near 75. Chance of precipitation is 50%.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tennanah Lake NY
 41.89°N 74.98°W (Elev. 2001 ft)
Last Update:
2:30 am EDT Aug 23, 2026
Forecast Valid:
6am EDT Aug 23, 2026-6pm EDT Aug 29, 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