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.

Mostly Cloudy

69°F

21°C

Humidity 68%
Wind Speed N 9 mph
Barometer 29.94 in (1013.2 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 23 Jun 2:56 pm EDT
Extended Forecast for

Lake Delaware NY

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 68. North wind around 7 mph.

    High: 68 °F

    Mostly Cloudy

  • Tonight

    Tonight: Partly cloudy, with a low around 50. Northwest wind 3 to 8 mph.

    Low: 50 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 70. Northwest wind 5 to 8 mph.

    High: 70 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 50. Northwest wind around 5 mph becoming calm in the evening.

    Low: 50 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 74. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 50%.

    High: 74 °F

    Mostly Sunny
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Low around 56. Chance of precipitation is 90%.

    Low: 56 °F

    Showers

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.

    High: 74 °F

    Showers
    Likely then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.

    Low: 53 °F

    Chance
    T-storms then
    Chance
    Showers

  • Saturday

    Saturday: A chance of showers before 2pm. Partly sunny, with a high near 74. Chance of precipitation is 50%.

    High: 74 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 68. North wind around 7 mph.
Tonight
Partly cloudy, with a low around 50. Northwest wind 3 to 8 mph.
Wednesday
Sunny, with a high near 70. Northwest wind 5 to 8 mph.
Wednesday Night
Mostly clear, with a low around 50. Northwest wind around 5 mph becoming calm in the evening.
Thursday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 74. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms before 8pm, then showers and possibly a thunderstorm between 8pm and 2am, then showers likely after 2am. Low around 56. Chance of precipitation is 90%.
Friday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 74. Chance of precipitation is 60%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. Chance of precipitation is 40%.
Saturday
A chance of showers before 2pm. Partly sunny, with a high near 74. Chance of precipitation is 50%.
Saturday Night
Partly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 77.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 80.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Lake Delaware NY
 42.25°N 74.85°W (Elev. 2283 ft)
Last Update:
2:30 pm EDT Jun 23, 2026
Forecast Valid:
3pm EDT Jun 23, 2026-6pm EDT Jun 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