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.

Fair

58°F

14°C

Humidity 87%
Wind Speed Calm
Barometer 30.03 in (1016.3 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 26 Jul 12:56 am EDT
Extended Forecast for

Lava NY

  • Overnight

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

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 82. Calm wind.

    High: 82 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Areas of fog after 2am. Otherwise, partly cloudy, with a low around 58. Calm wind.

    Low: 58 °F

    Partly Cloudy
    then Areas
    Fog

  • Monday

    Monday: A chance of showers and thunderstorms between noon and 2pm, then showers and possibly a thunderstorm after 2pm. Areas of fog before 9am. High near 83. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Areas Fog
    then Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers. Patchy fog after 11pm. Low around 60. Calm wind. Chance of precipitation is 80%.

    Low: 60 °F

    Showers and
    Patchy Fog
    then Chance
    Showers and
    Patchy Fog

  • Tuesday

    Tuesday: Showers likely, then showers and possibly a thunderstorm after 11am. Some of the storms could produce heavy rainfall. High near 76. Chance of precipitation is 90%.

    High: 76 °F

    Heavy Rain

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Some of the storms could produce heavy rainfall. Low around 60. Chance of precipitation is 80%.

    Low: 60 °F

    Heavy Rain

  • Wednesday

    Wednesday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 76. Chance of precipitation is 80%.

    High: 76 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 57. Chance of precipitation is 80%.

    Low: 57 °F

    Showers then
    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 54. Calm wind.
Sunday
Mostly sunny, with a high near 82. Calm wind.
Sunday Night
Areas of fog after 2am. Otherwise, partly cloudy, with a low around 58. Calm wind.
Monday
A chance of showers and thunderstorms between noon and 2pm, then showers and possibly a thunderstorm after 2pm. Areas of fog before 9am. High near 83. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers. Patchy fog after 11pm. Low around 60. Calm wind. Chance of precipitation is 80%.
Tuesday
Showers likely, then showers and possibly a thunderstorm after 11am. Some of the storms could produce heavy rainfall. High near 76. Chance of precipitation is 90%.
Tuesday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Some of the storms could produce heavy rainfall. Low around 60. Chance of precipitation is 80%.
Wednesday
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 76. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 57. Chance of precipitation is 80%.
Thursday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 78. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 57. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 59.
Saturday
A chance of showers. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Lava NY
 41.63°N 75.01°W (Elev. 1001 ft)
Last Update:
12:30 am EDT Jul 26, 2026
Forecast Valid:
1am EDT Jul 26, 2026-6pm EDT Aug 1, 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