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.

Overcast

27°F

-3°C

Humidity 66%
Wind Speed N 16 G 28 mph
Barometer 30.17 in (1023.0 mb)
Dewpoint 17°F (-8°C)
Visibility NA
Wind Chill15°F (-9°C)
Last update 1 Mar 9:56 am EST
Extended Forecast for

Mongaup Valley NY

  • Today

    Today: Mostly cloudy early, then gradual clearing, with a high near 31. Northwest wind 6 to 8 mph.

    High: 31 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 5. Northwest wind around 6 mph becoming calm in the evening.

    Low: 5 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 30. Calm wind.

    High: 30 °F

    Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 14. Calm wind.

    Low: 14 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A chance of snow before 10am, then a chance of sleet between 10am and 1pm, then rain and sleet after 1pm. High near 36. Calm wind becoming south around 6 mph in the morning. Chance of precipitation is 80%.

    High: 36 °F

    Chance
    Snow/Sleet
    then
    Rain/Sleet

  • Tuesday Night

    Tuesday Night: Rain. Low around 30. Chance of precipitation is 90%.

    Low: 30 °F

    Rain

  • Wednesday

    Wednesday: A chance of rain after 1pm. Partly sunny, with a high near 45. Chance of precipitation is 30%.

    High: 45 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 50%.

    Low: 35 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain. Mostly cloudy, with a high near 55. Chance of precipitation is 50%.

    High: 55 °F

    Chance Rain

Detailed Forecast

Today
Mostly cloudy early, then gradual clearing, with a high near 31. Northwest wind 6 to 8 mph.
Tonight
Mostly clear, with a low around 5. Northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 30. Calm wind.
Monday Night
Increasing clouds, with a low around 14. Calm wind.
Tuesday
A chance of snow before 10am, then a chance of sleet between 10am and 1pm, then rain and sleet after 1pm. High near 36. Calm wind becoming south around 6 mph in the morning. Chance of precipitation is 80%.
Tuesday Night
Rain. Low around 30. Chance of precipitation is 90%.
Wednesday
A chance of rain after 1pm. Partly sunny, with a high near 45. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 35. Chance of precipitation is 50%.
Thursday
A chance of rain. Mostly cloudy, with a high near 55. Chance of precipitation is 50%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.
Friday
A chance of rain. Mostly cloudy, with a high near 48. Chance of precipitation is 50%.
Friday Night
A chance of rain. Mostly cloudy, with a low around 36. Chance of precipitation is 30%.
Saturday
A chance of rain. Mostly cloudy, with a high near 58. Chance of precipitation is 30%.
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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:
4:57 am EST Mar 1, 2026
Forecast Valid:
10am EST Mar 1, 2026-6pm EST Mar 7, 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