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.

A Few Clouds

63°F

17°C

Humidity 90%
Wind Speed Calm
Barometer 30.13 in (1019.6 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 29 Jun 6:56 am EDT
Extended Forecast for

Upper Mongaup NY

  • Today

    Today: Mostly sunny, with a high near 85. Light and variable wind.

    High: 85 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 86. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 86 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 68. Southwest wind around 6 mph.

    Low: 68 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 93. West wind 5 to 7 mph. Chance of precipitation is 30%.

    High: 93 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms then
    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

Detailed Forecast

Today
Mostly sunny, with a high near 85. Light and variable wind.
Tonight
Mostly clear, with a low around 63. Calm wind.
Tuesday
Mostly sunny, with a high near 86. Calm wind becoming southwest 5 to 8 mph in the morning.
Tuesday Night
Partly cloudy, with a low around 68. Southwest wind around 6 mph.
Wednesday
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 93. West wind 5 to 7 mph. Chance of precipitation is 30%.
Wednesday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 71. Chance of precipitation is 30%.
Thursday
Sunny and hot, with a high near 96.
Thursday Night
Mostly clear, with a low around 72.
Friday
Sunny and hot, with a high near 96.
Friday Night
Partly cloudy, with a low around 70.
Independence Day
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 92. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 40%.
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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:
6:44 am EDT Jun 29, 2026
Forecast Valid:
7am EDT Jun 29, 2026-6pm EDT Jul 5, 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