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.

Overcast

72°F

22°C

Humidity 94%
Wind Speed SW 3 mph
Barometer 30.15 in (1020.5 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 17 Sep 4:56 pm EDT
Extended Forecast for

Thompsonville NY

  • This Afternoon

    This Afternoon: Scattered showers. Cloudy, with a high near 74. Southwest wind around 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 74 °F

    Scattered
    Showers

  • Tonight

    Tonight: Scattered showers before 8pm. Mostly cloudy, with a low around 58. Light and variable wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 58 °F

    Scattered
    Showers then
    Mostly Cloudy

  • Friday

    Friday: Sunny, with a high near 74. North wind 6 to 8 mph.

    High: 74 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 43. Northwest wind around 5 mph becoming calm in the evening.

    Low: 43 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 66. Calm wind becoming east around 5 mph in the afternoon.

    High: 66 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers likely after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.

    Low: 49 °F

    Mostly Cloudy
    then Showers
    Likely

  • Sunday

    Sunday: Showers. High near 62. Chance of precipitation is 100%.

    High: 62 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 2am. Cloudy, with a low around 50. Chance of precipitation is 50%.

    Low: 50 °F

    Chance
    Showers

  • Monday

    Monday: Mostly cloudy, with a high near 64.

    High: 64 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Scattered showers. Cloudy, with a high near 74. Southwest wind around 5 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Scattered showers before 8pm. Mostly cloudy, with a low around 58. Light and variable wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday
Sunny, with a high near 74. North wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around 43. Northwest wind around 5 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 66. Calm wind becoming east around 5 mph in the afternoon.
Saturday Night
Showers likely after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 70%.
Sunday
Showers. High near 62. Chance of precipitation is 100%.
Sunday Night
A chance of showers before 2am. Cloudy, with a low around 50. Chance of precipitation is 50%.
Monday
Mostly cloudy, with a high near 64.
Monday Night
A chance of showers after 2am. Mostly cloudy, with a low around 45. Chance of precipitation is 40%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 57. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 42.
Wednesday
Partly sunny, with a high near 58.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 43. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
Thompsonville NY
 41.67°N 74.61°W (Elev. 1247 ft)
Last Update:
2:30 pm EDT Sep 17, 2026
Forecast Valid:
5pm EDT Sep 17, 2026-6pm EDT Sep 24, 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