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.

Fog/Mist

63°F

17°C

Humidity 100%
Wind Speed Calm
Barometer 29.91 in (1012.5 mb)
Dewpoint 63°F (17°C)
Visibility 6.00 mi
Last update 17 Aug 3:56 am EDT
Extended Forecast for

3 Miles NW Halcottsville NY

  • Today

    Today: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. Patchy fog before 11am. High near 77. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Patchy Fog
    then Showers

  • Tonight

    Tonight: Showers likely and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms between 7pm and 8pm. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 59. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Showers
    Likely and
    Patchy Fog
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 76. Northwest wind 3 to 6 mph.

    High: 76 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 54. Calm wind.

    Low: 54 °F

    Mostly Clear

  • Wednesday

    Wednesday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 78. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 20%.

    High: 78 °F

    Sunny then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 54. Chance of precipitation is 30%.

    Low: 54 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: A chance of showers before 2pm. Partly sunny, with a high near 75. Chance of precipitation is 30%.

    High: 75 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 51.

    Low: 51 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 75.

    High: 75 °F

    Sunny

Detailed Forecast

Today
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. Patchy fog before 11am. High near 77. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers likely and possibly a thunderstorm before 7pm, then a chance of showers and thunderstorms between 7pm and 8pm. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 59. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Patchy fog before 10am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 76. Northwest wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 54. Calm wind.
Wednesday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 78. Calm wind becoming southwest 5 to 7 mph in the morning. Chance of precipitation is 20%.
Wednesday Night
A slight chance of showers and thunderstorms before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 54. Chance of precipitation is 30%.
Thursday
A chance of showers before 2pm. Partly sunny, with a high near 75. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 51.
Friday
Sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 54.
Saturday
A chance of showers. 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 30%.
Sunday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 73. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Halcottsville NY
 42.25°N 74.64°W (Elev. 2001 ft)
Last Update:
2:30 am EDT Aug 17, 2026
Forecast Valid:
4am EDT Aug 17, 2026-6pm EDT Aug 23, 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