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.

Overcast

49°F

9°C

Humidity 36%
Wind Speed NW 9 mph
Barometer 29.86 in (1011.9 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 2 May 6:56 pm EDT
Extended Forecast for

Unionville NY

  • Tonight

    Tonight: Areas of frost before 2am, then widespread frost after 4am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 32. Northwest wind 3 to 5 mph.

    Low: 32 °F

    Mostly Cloudy
    then Frost

  • Sunday

    Sunday: Widespread frost before 8am. Otherwise, sunny, with a high near 53. Northwest wind 10 to 15 mph.

    High: 53 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 38. West wind 5 to 7 mph becoming calm after midnight.

    Low: 38 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 64. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 64 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 47. Light southwest wind.

    Low: 47 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 74. Chance of precipitation is 30%.

    High: 74 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.

    Low: 54 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers. High near 63. Chance of precipitation is 80%.

    High: 63 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers. Low around 48. Chance of precipitation is 80%.

    Low: 48 °F

    Showers

Detailed Forecast

Tonight
Areas of frost before 2am, then widespread frost after 4am. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 32. Northwest wind 3 to 5 mph.
Sunday
Widespread frost before 8am. Otherwise, sunny, with a high near 53. Northwest wind 10 to 15 mph.
Sunday Night
Mostly clear, with a low around 38. West wind 5 to 7 mph becoming calm after midnight.
Monday
Mostly sunny, with a high near 64. Southwest wind 6 to 10 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 47. Light southwest wind.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 74. Chance of precipitation is 30%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 54. Chance of precipitation is 50%.
Wednesday
Showers. High near 63. Chance of precipitation is 80%.
Wednesday Night
Showers. Low around 48. Chance of precipitation is 80%.
Thursday
Showers, with thunderstorms also possible after 2pm. High near 60. Chance of precipitation is 80%.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 37. Chance of precipitation is 50%.
Friday
Mostly sunny, with a high near 55.
Friday Night
Partly cloudy, with a low around 36.
Saturday
A chance of showers. Mostly sunny, with a high near 57. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Unionville NY
 41.86°N 74.54°W (Elev. 1378 ft)
Last Update:
7:29 pm EDT May 2, 2026
Forecast Valid:
7pm EDT May 2, 2026-6pm EDT May 9, 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