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 Rain Fog/Mist

66°F

19°C

Humidity 96%
Wind Speed N 8 mph
Barometer 30.06 in (1017.4 mb)
Dewpoint 65°F (18°C)
Visibility 5.00 mi
Last update 20 Aug 2:56 pm EDT
Extended Forecast for

Rock Valley NY

  • This Afternoon

    This Afternoon: Rain. High near 70. Light northwest wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 70 °F

    Rain

  • Tonight

    Tonight: Rain, mainly before 8pm. Low around 52. Light north wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 52 °F

    Rain then
    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 76. Light and variable wind.

    High: 76 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Cloudy

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 73. Calm wind becoming southeast around 6 mph in the morning. Chance of precipitation is 30%.

    High: 73 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.

    Low: 59 °F

    Chance
    Showers

  • Sunday

    Sunday: Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 75. Chance of precipitation is 70%.

    High: 75 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 53. Chance of precipitation is 60%.

    Low: 53 °F

    Showers
    Likely then
    Partly Cloudy

  • Monday

    Monday: A chance of showers after 2pm. Mostly sunny, with a high near 70. Chance of precipitation is 30%.

    High: 70 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Rain. High near 70. Light northwest wind. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain, mainly before 8pm. Low around 52. Light north wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday
Mostly sunny, with a high near 76. Light and variable wind.
Friday Night
Mostly cloudy, with a low around 57. Calm wind.
Saturday
A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 73. Calm wind becoming southeast around 6 mph in the morning. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 59. Chance of precipitation is 40%.
Sunday
Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 75. Chance of precipitation is 70%.
Sunday Night
Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 53. Chance of precipitation is 60%.
Monday
A chance of showers after 2pm. Mostly sunny, with a high near 70. Chance of precipitation is 30%.
Monday Night
A chance of showers before 8pm. Partly cloudy, with a low around 51. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 73.
Tuesday Night
Partly cloudy, with a low around 53.
Wednesday
Mostly sunny, with a high near 76.
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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 pm EDT Aug 20, 2026
Forecast Valid:
3pm EDT Aug 20, 2026-6pm EDT Aug 26, 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