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.

Light Snow Fog/Mist

30°F

-1°C

Humidity 85%
Wind Speed NW 3 mph
Barometer 29.87 in (1013.4 mb)
Dewpoint 26°F (-3°C)
Visibility 5.00 mi
Last update 18 Jan 1:56 pm EST
Extended Forecast for

Unionville NY

Winter Weather Advisory January 18, 02:19pm until January 18, 10:00pm
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory January 18, 02:19pm until January 18, 10:00pm

    NOW until 10:00pm Sun

    Winter Weather Advisory

  • This Afternoon

    High: 32 °F

    Snow

  • Tonight

    Tonight: Snow before 9pm, then a chance of snow showers between 9pm and 2am. Low around 14. Calm wind. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    Low: 14 °F

    Snow then
    Chance Snow
    Showers

  • M.L.King Day

    M.L.King Day: A slight chance of snow showers after 4pm. Partly sunny, with a high near 25. Light west wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 20%.

    High: 25 °F

    Partly Sunny
    then Slight
    Chance Snow
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 7. Wind chill values as low as -5. West wind around 10 mph, with gusts as high as 24 mph.

    Low: 7 °F

    Decreasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 15. West wind 9 to 13 mph, with gusts as high as 24 mph.

    High: 15 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 3.

    Low: 3 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Snow. High near 32. Calm wind. Chance of precipitation is 90%. Total daytime snow accumulation of around 2 inches.
Tonight
Snow before 9pm, then a chance of snow showers between 9pm and 2am. Low around 14. Calm wind. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
M.L.King Day
A slight chance of snow showers after 4pm. Partly sunny, with a high near 25. Light west wind becoming southwest 6 to 11 mph in the morning. Winds could gust as high as 22 mph. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 7. Wind chill values as low as -5. West wind around 10 mph, with gusts as high as 24 mph.
Tuesday
Mostly sunny, with a high near 15. West wind 9 to 13 mph, with gusts as high as 24 mph.
Tuesday Night
Mostly clear, with a low around 3.
Wednesday
Mostly sunny, with a high near 24.
Wednesday Night
Mostly cloudy, with a low around 16.
Thursday
A chance of snow showers. Partly sunny, with a high near 32. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 9.
Friday
Mostly sunny, with a high near 21.
Friday Night
Mostly cloudy, with a low around 8.
Saturday
Partly sunny, with a high near 19.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Unionville NY
 41.86°N 74.54°W (Elev. 1378 ft)
Last Update:
2:06 pm EST Jan 18, 2026
Forecast Valid:
2pm EST Jan 18, 2026-6pm EST Jan 24, 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