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

4 Miles NE Grooville NY

Dense Fog Advisory until February 18, 08:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until February 18, 08:00am

    NOW until 8:00am Wed

    Dense Fog Advisory

  • Overnight

    Low: 29 °F

    Areas Dense
    Fog

  • Wednesday

    Wednesday: Rain showers before 4pm, then rain, possibly mixed with snow showers between 4pm and 5pm, then rain showers after 5pm. Areas of dense fog before 8am. High near 37. Calm wind becoming southeast around 5 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    High: 37 °F

    Showers and
    Areas Dense
    Fog then
    Rain/Snow

  • Wednesday Night

    Wednesday Night: Rain showers, snow showers, and freezing rain likely before 1am, then a chance of freezing rain between 1am and 4am. Mostly cloudy, with a low around 26. Southeast wind around 6 mph becoming northeast after midnight. Chance of precipitation is 70%. Little or no ice accumulation expected. Little or no snow accumulation expected.

    Low: 26 °F

    Wintry Mix
    Likely then
    Chance
    Freezing Rain

  • Thursday

    Thursday: Mostly cloudy, with a high near 32. East wind around 6 mph becoming south in the afternoon.

    High: 32 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: A slight chance of freezing rain before 10pm, then a chance of snow showers and freezing rain. Cloudy, with a low around 25. Southeast wind around 7 mph. Chance of precipitation is 50%.

    Low: 25 °F

    Slight Chance
    Wintry Mix
    then Chance
    Wintry Mix

  • Friday

    Friday: Freezing rain, possibly mixed with snow showers before 4pm, then rain showers and freezing rain, possibly mixed with snow showers. High near 32. Chance of precipitation is 100%.

    High: 32 °F

    Wintry Mix

  • Friday Night

    Friday Night: Rain showers, possibly mixed with snow showers and freezing rain before 10pm, then a chance of snow showers. Low around 26. Chance of precipitation is 80%.

    Low: 26 °F

    Wintry Mix
    then Chance
    Snow Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 32.

    High: 32 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Areas of dense fog. Otherwise, cloudy, with a low around 29. Light west wind.
Wednesday
Rain showers before 4pm, then rain, possibly mixed with snow showers between 4pm and 5pm, then rain showers after 5pm. Areas of dense fog before 8am. High near 37. Calm wind becoming southeast around 5 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Wednesday Night
Rain showers, snow showers, and freezing rain likely before 1am, then a chance of freezing rain between 1am and 4am. Mostly cloudy, with a low around 26. Southeast wind around 6 mph becoming northeast after midnight. Chance of precipitation is 70%. Little or no ice accumulation expected. Little or no snow accumulation expected.
Thursday
Mostly cloudy, with a high near 32. East wind around 6 mph becoming south in the afternoon.
Thursday Night
A slight chance of freezing rain before 10pm, then a chance of snow showers and freezing rain. Cloudy, with a low around 25. Southeast wind around 7 mph. Chance of precipitation is 50%.
Friday
Freezing rain, possibly mixed with snow showers before 4pm, then rain showers and freezing rain, possibly mixed with snow showers. High near 32. Chance of precipitation is 100%.
Friday Night
Rain showers, possibly mixed with snow showers and freezing rain before 10pm, then a chance of snow showers. Low around 26. Chance of precipitation is 80%.
Saturday
Mostly cloudy, with a high near 32.
Saturday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.
Sunday
A chance of snow showers. Mostly cloudy, with a high near 26. Chance of precipitation is 50%.
Sunday Night
A chance of snow showers. Mostly cloudy, with a low around 17. Chance of precipitation is 50%.
Monday
A chance of snow showers. Mostly cloudy, with a high near 26. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around 7.
Tuesday
Partly sunny, with a high near 16.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NE Grooville NY
 41.99°N 74.7°W (Elev. 2782 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