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.

Light Snow Fog/Mist

30°F

-1°C

Humidity 85%
Wind Speed W 17 G 35 mph
Barometer 29.48 in (998.6 mb)
Dewpoint 26°F (-3°C)
Visibility 4.00 mi
Wind Chill18°F (-8°C)
Last update 17 Mar 3:56 am EDT
Extended Forecast for

Rock Valley NY

  • Overnight

    Overnight: A slight chance of snow showers before 5am. Mostly cloudy, with a steady temperature around 28. West wind 11 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 28 °F

    Slight Chance
    Snow Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 29. West wind 13 to 15 mph, with gusts as high as 30 mph.

    High: 29 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, then gradually becoming clear, with a low around 14. West wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 14 °F

    Decreasing
    Clouds

  • Wednesday

    Wednesday: Mostly sunny, with a high near 33. West wind around 5 mph becoming light and variable.

    High: 33 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 23. South wind 3 to 5 mph.

    Low: 23 °F

    Partly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 42.

    High: 42 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: A chance of snow. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.

    Low: 30 °F

    Chance Snow

  • Friday

    Friday: A chance of rain after 2pm. Mostly cloudy, with a high near 45. Chance of precipitation is 30%.

    High: 45 °F

    Partly Sunny
    then Chance
    Rain

  • Friday Night

    Friday Night: A chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 50%.

    Low: 33 °F

    Chance
    Rain/Snow

Detailed Forecast

Overnight
A slight chance of snow showers before 5am. Mostly cloudy, with a steady temperature around 28. West wind 11 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Tuesday
Partly sunny, with a high near 29. West wind 13 to 15 mph, with gusts as high as 30 mph.
Tuesday Night
Mostly cloudy, then gradually becoming clear, with a low around 14. West wind 8 to 10 mph, with gusts as high as 20 mph.
Wednesday
Mostly sunny, with a high near 33. West wind around 5 mph becoming light and variable.
Wednesday Night
Partly cloudy, with a low around 23. South wind 3 to 5 mph.
Thursday
Partly sunny, with a high near 42.
Thursday Night
A chance of snow. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Friday
A chance of rain after 2pm. Mostly cloudy, with a high near 45. Chance of precipitation is 30%.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 33. Chance of precipitation is 50%.
Saturday
A chance of rain and snow before 2pm, then a chance of rain. Mostly cloudy, with a high near 43. Chance of precipitation is 40%.
Saturday Night
A chance of rain and snow. Mostly cloudy, with a low around 30. Chance of precipitation is 40%.
Sunday
A chance of rain and snow. Mostly cloudy, with a high near 44. Chance of precipitation is 40%.
Sunday Night
A chance of rain and snow. Mostly cloudy, with a low around 25. Chance of precipitation is 40%.
Monday
Partly sunny, with a high near 38.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Rock Valley NY
 41.9°N 75.07°W (Elev. 1821 ft)
Last Update:
2:30 am EDT Mar 17, 2026
Forecast Valid:
4am EDT Mar 17, 2026-6pm EDT Mar 23, 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