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.

Fair

57°F

14°C

Humidity 26%
Wind Speed S 15 G 20 mph
Barometer 30.38 in (1029.9 mb)
Dewpoint 22°F (-6°C)
Visibility 10.00 mi
Last update 9 Apr 4:56 pm EDT
Extended Forecast for

Mongaup Valley NY

Red Flag Warning until April 9, 06:00pm
Click here for hazard details and duration
Red Flag Warning
  •  
    Red Flag Warning until April 9, 06:00pm

    NOW until 6:00pm Thu

    Red Flag Warning

  • This Afternoon

    High: 55 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 33. South wind 3 to 6 mph.

    Low: 33 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 67. Calm wind becoming south 5 to 9 mph in the afternoon.

    High: 67 °F

    Sunny

  • Friday Night

    Friday Night: A chance of showers before 2am. Mostly cloudy, with a low around 39. Southwest wind 6 to 8 mph becoming northwest after midnight. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 39 °F

    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 53. Northwest wind around 10 mph, with gusts as high as 22 mph.

    High: 53 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 29.

    Low: 29 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 43.

    Low: 43 °F

    Mostly Cloudy

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 55. South wind around 9 mph.
Tonight
Partly cloudy, with a low around 33. South wind 3 to 6 mph.
Friday
Sunny, with a high near 67. Calm wind becoming south 5 to 9 mph in the afternoon.
Friday Night
A chance of showers before 2am. Mostly cloudy, with a low around 39. Southwest wind 6 to 8 mph becoming northwest after midnight. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Sunny, with a high near 53. Northwest wind around 10 mph, with gusts as high as 22 mph.
Saturday Night
Mostly clear, with a low around 29.
Sunday
Mostly sunny, with a high near 58.
Sunday Night
Mostly cloudy, with a low around 43.
Monday
Mostly cloudy, with a high near 71.
Monday Night
Mostly cloudy, with a low around 54.
Tuesday
Partly sunny, with a high near 77.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.
Wednesday
A chance of showers. Mostly cloudy, with a high near 80. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 56. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 74.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mongaup Valley NY
 41.65°N 74.79°W (Elev. 1181 ft)
Last Update:
2:30 pm EDT Apr 9, 2026
Forecast Valid:
5pm EDT Apr 9, 2026-6pm EDT Apr 16, 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