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.

Overcast

52°F

11°C

Humidity 100%
Wind Speed E 3 mph
Barometer 29.98 in (1015.4 mb)
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 31 Mar 8:56 am EDT
Extended Forecast for

Upper Mongaup NY

  • Today

    Today: A chance of rain, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 71. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Chance Rain

  • Tonight

    Tonight: Rain and thunderstorms likely, mainly before midnight, then rain likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 58. Southwest wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 58 °F

    Rain Likely

  • Wednesday

    Wednesday: Rain likely, then rain and possibly a thunderstorm after 2pm. High near 67. West wind around 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 67 °F

    Rain

  • Wednesday Night

    Wednesday Night: Rain and possibly a thunderstorm before 8pm, then rain likely. Low around 41. East wind 3 to 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 41 °F

    Rain

  • Thursday

    Thursday: A chance of rain. Cloudy, with a high near 49. Southeast wind 6 to 8 mph. Chance of precipitation is 30%.

    High: 49 °F

    Chance Rain

  • Thursday Night

    Thursday Night: A chance of rain before 2am. Cloudy, with a low around 40. Chance of precipitation is 30%.

    Low: 40 °F

    Chance Rain

  • Friday

    Friday: Mostly cloudy, with a high near 66.

    High: 66 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A chance of rain between 8pm and 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 30%.

    Low: 51 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain after 2pm. Partly sunny, with a high near 73. Chance of precipitation is 40%.

    High: 73 °F

    Partly Sunny
    then Chance
    Rain

Detailed Forecast

Today
A chance of rain, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 71. Southwest wind around 10 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Rain and thunderstorms likely, mainly before midnight, then rain likely and possibly a thunderstorm after 4am. Mostly cloudy, with a low around 58. Southwest wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Rain likely, then rain and possibly a thunderstorm after 2pm. High near 67. West wind around 8 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Rain and possibly a thunderstorm before 8pm, then rain likely. Low around 41. East wind 3 to 5 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of rain. Cloudy, with a high near 49. Southeast wind 6 to 8 mph. Chance of precipitation is 30%.
Thursday Night
A chance of rain before 2am. Cloudy, with a low around 40. Chance of precipitation is 30%.
Friday
Mostly cloudy, with a high near 66.
Friday Night
A chance of rain between 8pm and 2am. Mostly cloudy, with a low around 51. Chance of precipitation is 30%.
Saturday
A chance of rain after 2pm. Partly sunny, with a high near 73. Chance of precipitation is 40%.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 51. Chance of precipitation is 50%.
Sunday
Rain likely. Mostly cloudy, with a high near 68. Chance of precipitation is 60%.
Sunday Night
Rain likely. Mostly cloudy, with a low around 38. Chance of precipitation is 60%.
Monday
A chance of rain. Partly sunny, with a high near 48. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Upper Mongaup NY
 41.47°N 74.8°W (Elev. 1224 ft)
Last Update:
4:59 am EDT Mar 31, 2026
Forecast Valid:
9am EDT Mar 31, 2026-6pm EDT Apr 6, 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