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.

Fog/Mist

33°F

1°C

Humidity 100%
Wind Speed W 5 mph
Barometer 30.17 in (1023.3 mb)
Dewpoint 33°F (1°C)
Visibility 2.50 mi
Wind Chill28°F (-2°C)
Last update 4 Mar 3:56 am EST
Extended Forecast for

Mongaup Valley NY

  • Today

    Today: Mostly sunny, with a high near 50. Calm wind.

    High: 50 °F

    Mostly Sunny

  • Tonight

    Tonight: A chance of freezing rain after 4am. Increasing clouds, with a low around 29. Calm wind. Chance of precipitation is 30%.

    Low: 29 °F

    Partly Cloudy
    then Chance
    Freezing Rain

  • Thursday

    Thursday: Rain, mainly after 7am. High near 43. Light east wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 43 °F

    Rain

  • Thursday Night

    Thursday Night: Rain before 4am, then rain or freezing rain. Low around 32. East wind around 6 mph. Chance of precipitation is 100%. Little or no ice accumulation expected.

    Low: 32 °F

    Rain then
    Rain/Freezing
    Rain

  • Friday

    Friday: Freezing rain, possibly mixed with rain before 7am, then a slight chance of rain between 7am and 1pm. High near 39. East wind 3 to 5 mph. Chance of precipitation is 80%.

    High: 39 °F

    Rain/Freezing
    Rain then
    Slight Chance
    Rain

  • Friday Night

    Friday Night: A slight chance of showers. Mostly cloudy, with a low around 35. Chance of precipitation is 20%.

    Low: 35 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: A chance of showers after 1pm. Mostly cloudy, with a high near 60. Chance of precipitation is 40%.

    High: 60 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Rain likely before 1am. Mostly cloudy, with a low around 38. Chance of precipitation is 70%.

    Low: 38 °F

    Rain Likely

  • Sunday

    Sunday: Mostly sunny, with a high near 54.

    High: 54 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 50. Calm wind.
Tonight
A chance of freezing rain after 4am. Increasing clouds, with a low around 29. Calm wind. Chance of precipitation is 30%.
Thursday
Rain, mainly after 7am. High near 43. Light east wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday Night
Rain before 4am, then rain or freezing rain. Low around 32. East wind around 6 mph. Chance of precipitation is 100%. Little or no ice accumulation expected.
Friday
Freezing rain, possibly mixed with rain before 7am, then a slight chance of rain between 7am and 1pm. High near 39. East wind 3 to 5 mph. Chance of precipitation is 80%.
Friday Night
A slight chance of showers. Mostly cloudy, with a low around 35. Chance of precipitation is 20%.
Saturday
A chance of showers after 1pm. Mostly cloudy, with a high near 60. Chance of precipitation is 40%.
Saturday Night
Rain likely before 1am. Mostly cloudy, with a low around 38. Chance of precipitation is 70%.
Sunday
Mostly sunny, with a high near 54.
Sunday Night
Partly cloudy, with a low around 35.
Monday
Sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 40.
Tuesday
Mostly sunny, with a high near 66.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mongaup Valley NY
 41.65°N 74.79°W (Elev. 1181 ft)
Last Update:
1:30 am EST Mar 4, 2026
Forecast Valid:
4am EST Mar 4, 2026-6pm EDT Mar 10, 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