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.

Mostly Cloudy

77°F

25°C

Humidity 58%
Wind Speed Calm
Barometer 29.87 in (1010.7 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 12 Aug 6:56 pm EDT
Extended Forecast for

Unionville NY

  • Tonight

    Tonight: Showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 1am, then a chance of showers and thunderstorms after 1am. Low around 59. Light and variable wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Showers

  • Thursday

    Thursday: Partly sunny, with a high near 79. Northwest wind 5 to 8 mph.

    High: 79 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 56. Light northwest wind.

    Low: 56 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 79. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 79 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 53. Light north wind.

    Low: 53 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 40%.

    High: 78 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly before 2am. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.

    Low: 60 °F

    Showers
    Likely

Detailed Forecast

Tonight
Showers and thunderstorms before midnight, then showers likely and possibly a thunderstorm between midnight and 1am, then a chance of showers and thunderstorms after 1am. Low around 59. Light and variable wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Partly sunny, with a high near 79. Northwest wind 5 to 8 mph.
Thursday Night
Partly cloudy, with a low around 56. Light northwest wind.
Friday
Sunny, with a high near 79. Calm wind becoming northwest around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 53. Light north wind.
Saturday
Sunny, with a high near 78.
Saturday Night
Partly cloudy, with a low around 55.
Sunday
A chance of showers. Partly sunny, with a high near 78. Chance of precipitation is 40%.
Sunday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Monday
A chance of showers before 8am, then a chance of showers after 2pm. Partly sunny, with a high near 78. Chance of precipitation is 30%.
Monday Night
A chance of showers. Partly cloudy, with a low around 58. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 79.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Mostly sunny, with a high near 80.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Unionville NY
 41.86°N 74.57°W (Elev. 1181 ft)
Last Update:
7:00 pm EDT Aug 12, 2026
Forecast Valid:
7pm EDT Aug 12, 2026-6pm EDT Aug 19, 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