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

57°F

14°C

Humidity 93%
Wind Speed Calm
Barometer 29.96 in (1014.0 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 19 Aug 2:56 am EDT
Extended Forecast for

Grooville NY

  • Overnight

    Overnight: Patchy fog. Otherwise, partly cloudy, with a low around 54. Calm wind.

    Low: 54 °F

    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 9am. Otherwise, increasing clouds, with a high near 78. Calm wind becoming west around 6 mph in the afternoon.

    High: 78 °F

    Patchy Fog
    then Mostly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 55. Light and variable wind.

    Low: 55 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers between 2pm and 3pm. Increasing clouds, with a high near 72. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 72 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 50. Light north wind.

    Low: 50 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers after 2pm. Mostly sunny, with a high near 74. Chance of precipitation is 30%.

    High: 74 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.

    Low: 55 °F

    Chance
    Showers

Detailed Forecast

Overnight
Patchy fog. Otherwise, partly cloudy, with a low around 54. Calm wind.
Wednesday
Patchy fog before 9am. Otherwise, increasing clouds, with a high near 78. Calm wind becoming west around 6 mph in the afternoon.
Wednesday Night
Mostly cloudy, with a low around 55. Light and variable wind.
Thursday
A chance of showers between 2pm and 3pm. Increasing clouds, with a high near 72. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Partly cloudy, with a low around 50. Light north wind.
Friday
Sunny, with a high near 76.
Friday Night
Partly cloudy, with a low around 54.
Saturday
A chance of showers after 2pm. Mostly sunny, with a high near 74. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 55. Chance of precipitation is 50%.
Sunday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
Sunday Night
A chance of thunderstorms. Partly cloudy, with a low around 52. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 72.
Monday Night
Partly cloudy, with a low around 50.
Tuesday
Mostly sunny, with a high near 72.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grooville NY
 41.95°N 74.76°W (Elev. 2156 ft)
Last Update:
2:30 am EDT Aug 19, 2026
Forecast Valid:
3am EDT Aug 19, 2026-6pm EDT Aug 25, 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