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.

Fair

55°F

13°C

Humidity 96%
Wind Speed Calm
Barometer 30.00 in (1015.2 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 26 Jul 4:56 am EDT
Extended Forecast for

Rock Valley NY

  • Today

    Today: Mostly sunny, with a high near 78. Light and variable wind.

    High: 78 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Partly Cloudy

  • Monday

    Monday: Scattered showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 80. Light and variable wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Mostly Sunny
    then
    Scattered
    T-storms

  • Monday Night

    Monday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 60. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 11am. High near 73. South wind 5 to 7 mph. Chance of precipitation is 100%.

    High: 73 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 2am, then showers likely. Low around 59. Chance of precipitation is 80%.

    Low: 59 °F

    Showers

  • Wednesday

    Wednesday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 71. Chance of precipitation is 90%.

    High: 71 °F

    Showers
    Likely then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 57. Chance of precipitation is 80%.

    Low: 57 °F

    Showers then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 73. Chance of precipitation is 50%.

    High: 73 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Mostly sunny, with a high near 78. Light and variable wind.
Tonight
Partly cloudy, with a low around 58. Calm wind.
Monday
Scattered showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 80. Light and variable wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 60. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers, with thunderstorms also possible after 11am. High near 73. South wind 5 to 7 mph. Chance of precipitation is 100%.
Tuesday Night
Showers and possibly a thunderstorm before 2am, then showers likely. Low around 59. Chance of precipitation is 80%.
Wednesday
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 71. Chance of precipitation is 90%.
Wednesday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 57. Chance of precipitation is 80%.
Thursday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 73. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 57. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 59.
Saturday
A chance of showers. Mostly sunny, with a high near 77. Chance of precipitation is 40%.
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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 Jul 26, 2026
Forecast Valid:
5am EDT Jul 26, 2026-6pm EDT Aug 1, 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