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.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Thompsonville NY

  • Today

    Today: Mostly sunny, with a high near 73. West wind 8 to 11 mph.

    High: 73 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 43. Northwest wind 6 to 9 mph.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 63. Calm wind becoming southeast around 5 mph in the afternoon.

    High: 63 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm, mainly after 5am. Low around 43. Light southeast wind. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 43 °F

    Partly Cloudy
    then Showers

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 69. South wind 5 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%.

    High: 69 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers before 2am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.

    Low: 31 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 44. Breezy.

    High: 44 °F

    Mostly Sunny
    and Breezy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 73. West wind 8 to 11 mph.
Tonight
Partly cloudy, with a low around 43. Northwest wind 6 to 9 mph.
Thursday
Mostly sunny, with a high near 63. Calm wind becoming southeast around 5 mph in the afternoon.
Thursday Night
Showers and possibly a thunderstorm, mainly after 5am. Low around 43. Light southeast wind. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and possibly a thunderstorm. High near 69. South wind 5 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 90%.
Friday Night
A chance of showers before 2am. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 44. Breezy.
Saturday Night
Mostly clear, with a low around 29.
Sunday
Sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 32.
Monday
Sunny, with a high near 62.
Monday Night
Mostly cloudy, with a low around 38.
Tuesday
Partly sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Thompsonville NY
 41.67°N 74.61°W (Elev. 1247 ft)
Last Update:
2:30 am EDT Oct 14, 2026
Forecast Valid:
5am EDT Oct 14, 2026-6pm EDT Oct 20, 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