National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7°NLon: 74.8°WElev: 1404ft.

Partly Cloudy

94°F

34°C

Humidity 49%
Wind Speed Vrbl 7 mph
Barometer 30.04 in (1015.9 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index102°F (39°C)
Last update 1 Jul 1:56 pm EDT
Extended Forecast for

4 Miles WSW Big Indian NY

Extreme Heat Warning July 1, 02:28pm until July 3, 08:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 1, 02:28pm until July 3, 08:00pm

    NOW until 8:00pm Fri

    Extreme Heat Warning

  • This Afternoon

    High: 84 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly before 7pm. Some of the storms could be severe. Partly cloudy, with a low around 65. West wind around 8 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Severe
    Thunderstorms
    then Mostly
    Clear

  • Thursday

    Thursday: Sunny, with a high near 88. West wind 7 to 10 mph.

    High: 88 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 66. West wind 9 to 13 mph.

    Low: 66 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 85. West wind 11 to 13 mph. Chance of precipitation is 20%.

    High: 85 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

  • Independence Day

    Independence Day: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 40%.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.

    Low: 60 °F

    Chance
    T-storms then
    Mostly Cloudy

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Some of the storms could be severe. Partly sunny, with a high near 84. West wind around 8 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms, mainly before 7pm. Some of the storms could be severe. Partly cloudy, with a low around 65. West wind around 8 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Sunny, with a high near 88. West wind 7 to 10 mph.
Thursday Night
Mostly clear, with a low around 66. West wind 9 to 13 mph.
Friday
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 85. West wind 11 to 13 mph. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 62.
Independence Day
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 83. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms before 8pm. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 70%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 58. Chance of precipitation is 70%.
Monday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 77. Chance of precipitation is 70%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 56. Chance of precipitation is 40%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 77. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WSW Big Indian NY
 42.05°N 74.5°W (Elev. 3189 ft)
Last Update:
8:37 am EDT Jul 1, 2026
Forecast Valid:
2pm EDT Jul 1, 2026-6pm EDT Jul 7, 2026
 
Forecast Discussion
 
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Additional Resources

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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