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

64°F

18°C

Humidity 100%
Wind Speed N 6 mph
Barometer 30.31 in (1025.7 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 17 Sep 2:56 am EDT
Extended Forecast for

4 Miles SSW Grant Mills NY

  • Overnight

    Overnight: Patchy fog before 4am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 59. Calm wind.

    Low: 59 °F

    Patchy Fog

  • Thursday

    Thursday: A chance of showers, then showers and possibly a thunderstorm after 2pm. Patchy fog before 9am. High near 71. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Chance
    Showers and
    Patchy Fog
    then Showers

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and midnight. Patchy fog between 9pm and 11pm. Otherwise, mostly cloudy, with a low around 55. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Showers
    Likely and
    Patchy Fog
    then Mostly
    Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 68. North wind 8 to 10 mph, with gusts as high as 20 mph.

    High: 68 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 41. North wind around 6 mph becoming calm in the evening.

    Low: 41 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers after 2am. Low around 47. Chance of precipitation is 80%.

    Low: 47 °F

    Mostly Cloudy
    then Showers

  • Sunday

    Sunday: Showers. High near 59. Chance of precipitation is 100%.

    High: 59 °F

    Showers

  • Sunday Night

    Sunday Night: Showers likely before 8pm. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.

    Low: 46 °F

    Showers
    Likely then
    Mostly Cloudy

Detailed Forecast

Overnight
Patchy fog before 4am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 59. Calm wind.
Thursday
A chance of showers, then showers and possibly a thunderstorm after 2pm. Patchy fog before 9am. High near 71. Calm wind becoming south around 6 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely before 11pm, then a slight chance of showers between 11pm and midnight. Patchy fog between 9pm and 11pm. Otherwise, mostly cloudy, with a low around 55. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly sunny, with a high near 68. North wind 8 to 10 mph, with gusts as high as 20 mph.
Friday Night
Partly cloudy, with a low around 41. North wind around 6 mph becoming calm in the evening.
Saturday
Mostly sunny, with a high near 64.
Saturday Night
Showers after 2am. Low around 47. Chance of precipitation is 80%.
Sunday
Showers. High near 59. Chance of precipitation is 100%.
Sunday Night
Showers likely before 8pm. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Monday
Partly sunny, with a high near 62.
Monday Night
Mostly cloudy, with a low around 43.
Tuesday
A chance of showers. Partly sunny, with a high near 59. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Mostly sunny, with a high near 61.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSW Grant Mills NY
 42.03°N 74.72°W (Elev. 2257 ft)
Last Update:
2:36 am EDT Sep 17, 2026
Forecast Valid:
3am EDT Sep 17, 2026-6pm EDT Sep 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation