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

83°F

28°C

Humidity 41%
Wind Speed S 8 mph
Barometer 30.21 in (1022.2 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 12 Jul 2:56 pm EDT
Extended Forecast for

Mongaup Valley NY

  • This Afternoon

    This Afternoon: Sunny, with a high near 84. Light south wind.

    High: 84 °F

    Sunny

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, mostly clear, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Clear
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 7am. Otherwise, sunny, with a high near 85. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 85 °F

    Patchy Fog
    then Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61. Light southwest wind.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 93. Light west wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

    High: 93 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 93.

    High: 93 °F

    Hot

  • Wednesday Night

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

    Low: 62 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 84. Light south wind.
Tonight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 59. Calm wind.
Monday
Patchy fog before 7am. Otherwise, sunny, with a high near 85. Calm wind becoming southwest around 6 mph in the afternoon.
Monday Night
Mostly clear, with a low around 61. Light southwest wind.
Tuesday
Sunny and hot, with a high near 93. Light west wind increasing to 5 to 9 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
Mostly clear, with a low around 69.
Wednesday
Sunny and hot, with a high near 93.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
Mostly sunny, with a high near 87.
Thursday Night
Partly cloudy, with a low around 59.
Friday
Mostly sunny, with a high near 85.
Friday Night
A chance of showers. Partly cloudy, with a low around 58. Chance of precipitation is 30%.
Saturday
A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mongaup Valley NY
 41.67°N 74.79°W (Elev. 1175 ft)
Last Update:
2:30 pm EDT Jul 12, 2026
Forecast Valid:
3pm EDT Jul 12, 2026-6pm EDT Jul 18, 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