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

20°F

-7°C

Humidity 92%
Wind Speed Calm
Barometer 30.00 in (1017.7 mb)
Dewpoint 18°F (-8°C)
Visibility 4.00 mi
Last update 18 Jan 1:56 am EST
Extended Forecast for

3 Miles SSE Grant Mills NY

Winter Weather Advisory January 18, 07:00am until January 19, 04:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: A chance of snow, mainly after 5am. Cloudy, with a low around 21. Southwest wind 3 to 6 mph. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 21 °F

    Chance Snow

  • Sunday

    Sunday: Snow, mainly before 11am. High near 27. Light and variable wind becoming north around 6 mph in the afternoon. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    High: 27 °F

    Snow then
    Chance Snow

  • Sunday Night

    Sunday Night: A chance of snow, mainly before 8pm. Mostly cloudy, with a low around 9. North wind 5 to 7 mph. Chance of precipitation is 30%. New snow accumulation of less than one inch possible.

    Low: 9 °F

    Chance Snow
    then Mostly
    Cloudy

  • M.L.King Day

    M.L.King Day: A slight chance of snow showers after 1pm. Mostly cloudy, with a high near 20. Wind chill values as low as zero. Southwest wind 5 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 20 °F

    Partly Sunny
    then Slight
    Chance Snow
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 3. West wind 11 to 15 mph, with gusts as high as 25 mph.

    Low: 3 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny and cold, with a high near 10.

    High: 10 °F

    Cold

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around -1.

    Low: -1 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 21.

    High: 21 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 14.

    Low: 14 °F

    Mostly Cloudy

Detailed Forecast

Overnight
A chance of snow, mainly after 5am. Cloudy, with a low around 21. Southwest wind 3 to 6 mph. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.
Sunday
Snow, mainly before 11am. High near 27. Light and variable wind becoming north around 6 mph in the afternoon. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Sunday Night
A chance of snow, mainly before 8pm. Mostly cloudy, with a low around 9. North wind 5 to 7 mph. Chance of precipitation is 30%. New snow accumulation of less than one inch possible.
M.L.King Day
A slight chance of snow showers after 1pm. Mostly cloudy, with a high near 20. Wind chill values as low as zero. Southwest wind 5 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, with a low around 3. West wind 11 to 15 mph, with gusts as high as 25 mph.
Tuesday
Partly sunny and cold, with a high near 10.
Tuesday Night
Partly cloudy, with a low around -1.
Wednesday
Partly sunny, with a high near 21.
Wednesday Night
Mostly cloudy, with a low around 14.
Thursday
A chance of snow. Partly sunny, with a high near 24. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 5.
Friday
Partly sunny, with a high near 20.
Friday Night
A chance of snow. Mostly cloudy, with a low around 10. Chance of precipitation is 30%.
Saturday
A chance of snow. Mostly cloudy, with a high near 22. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SSE Grant Mills NY
 42.03°N 74.66°W (Elev. 2533 ft)
Last Update:
1:24 am EST Jan 18, 2026
Forecast Valid:
2am EST Jan 18, 2026-6pm EST Jan 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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