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.

Fog/Mist

28°F

-2°C

Humidity 96%
Wind Speed N 5 mph
Barometer 29.95 in (1015.3 mb)
Dewpoint 27°F (-3°C)
Visibility 5.00 mi
Wind Chill22°F (-6°C)
Last update 18 Feb 3:56 am EST
Extended Forecast for

Apex NY

Winter Weather Advisory February 18, 12:00pm until February 19, 04:00am
Dense Fog Advisory until February 18, 08:00am
Click here for hazard details and duration
Winter Weather Advisory
Dense Fog Advisory
  •  
    Dense Fog Advisory until February 18, 08:00am

    NOW until 8:00am Wed

    Dense Fog Advisory

  • Overnight

    Low: 31 °F

    Slight Chance
    Showers and
    Areas Dense
    Fog

  • Wednesday

    Wednesday: Showers, mainly after 8am. Areas of dense fog before 8am. High near 38. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 38 °F

    Showers and
    Areas Dense
    Fog

  • Wednesday Night

    Wednesday Night: Rain showers and sleet likely before 9pm, then a chance of rain showers between 9pm and 11pm. Mostly cloudy, with a low around 29. Southeast wind around 6 mph. Chance of precipitation is 70%. Little or no sleet accumulation expected.

    Low: 29 °F

    Rain/Sleet
    Likely then
    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of rain and snow showers between 1pm and 4pm, then a slight chance of snow showers after 4pm. Mostly cloudy, with a high near 36. Southeast wind around 6 mph. Chance of precipitation is 20%.

    High: 36 °F

    Mostly Cloudy
    then Slight
    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Snow showers and freezing rain likely, mainly after 1am. Cloudy, with a low around 29. Southeast wind 8 to 10 mph. Chance of precipitation is 60%.

    Low: 29 °F

    Chance Wintry
    Mix then
    Wintry Mix
    Likely

  • Friday

    Friday: Snow showers and freezing rain before 10am, then rain showers. High near 35. Chance of precipitation is 100%.

    High: 35 °F

    Wintry Mix
    then Showers

  • Friday Night

    Friday Night: Rain showers likely before 10pm, then rain and snow showers likely between 10pm and 1am, then a chance of snow showers after 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 60%.

    Low: 29 °F

    Rain/Snow
    Likely

  • Saturday

    Saturday: A chance of snow showers. Mostly cloudy, with a high near 35. Chance of precipitation is 30%.

    High: 35 °F

    Chance Snow
    Showers

Detailed Forecast

Overnight
A slight chance of showers. Areas of dense fog. Otherwise, cloudy, with a low around 31. Calm wind. Chance of precipitation is 20%.
Wednesday
Showers, mainly after 8am. Areas of dense fog before 8am. High near 38. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
Rain showers and sleet likely before 9pm, then a chance of rain showers between 9pm and 11pm. Mostly cloudy, with a low around 29. Southeast wind around 6 mph. Chance of precipitation is 70%. Little or no sleet accumulation expected.
Thursday
A slight chance of rain and snow showers between 1pm and 4pm, then a slight chance of snow showers after 4pm. Mostly cloudy, with a high near 36. Southeast wind around 6 mph. Chance of precipitation is 20%.
Thursday Night
Snow showers and freezing rain likely, mainly after 1am. Cloudy, with a low around 29. Southeast wind 8 to 10 mph. Chance of precipitation is 60%.
Friday
Snow showers and freezing rain before 10am, then rain showers. High near 35. Chance of precipitation is 100%.
Friday Night
Rain showers likely before 10pm, then rain and snow showers likely between 10pm and 1am, then a chance of snow showers after 1am. Mostly cloudy, with a low around 29. Chance of precipitation is 60%.
Saturday
A chance of snow showers. Mostly cloudy, with a high near 35. Chance of precipitation is 30%.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.
Sunday
Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 30. Chance of precipitation is 60%.
Sunday Night
Snow showers likely. Mostly cloudy, with a low around 20. Chance of precipitation is 60%.
Monday
A chance of snow showers. Mostly cloudy, with a high near 28. Chance of precipitation is 50%.
Monday Night
Mostly cloudy, with a low around 10.
Tuesday
Partly sunny, with a high near 18.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Apex NY
 42.07°N 75.27°W (Elev. 1991 ft)
Last Update:
1:18 am EST Feb 18, 2026
Forecast Valid:
4am EST Feb 18, 2026-6pm EST Feb 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