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

31°F

-1°C

Humidity 67%
Wind Speed S 6 mph
Barometer 30.19 in (1023.9 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 19 Mar 12:56 pm EDT
Extended Forecast for

Upper Mongaup NY

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 43. Southwest wind around 7 mph.

    High: 43 °F

    Mostly Cloudy

  • Tonight

    Tonight: Mostly cloudy, with a low around 27. Calm wind.

    Low: 27 °F

    Mostly Cloudy

  • Friday

    Friday: A chance of showers between 1pm and 4pm, then rain likely after 4pm. Increasing clouds, with a high near 54. Light and variable wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 54 °F

    Partly Sunny
    then Rain
    Likely

  • Friday Night

    Friday Night: Rain, mainly before 8pm. Low around 35. Southwest wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 35 °F

    Rain then
    Chance Rain

  • Saturday

    Saturday: Mostly sunny, with a high near 52. Northwest wind around 8 mph.

    High: 52 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 35.

    Low: 35 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of showers after 2pm. Partly sunny, with a high near 58. Chance of precipitation is 40%.

    High: 58 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: Rain likely. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.

    Low: 37 °F

    Rain Likely

  • Monday

    Monday: Partly sunny, with a high near 48.

    High: 48 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 43. Southwest wind around 7 mph.
Tonight
Mostly cloudy, with a low around 27. Calm wind.
Friday
A chance of showers between 1pm and 4pm, then rain likely after 4pm. Increasing clouds, with a high near 54. Light and variable wind becoming south 8 to 13 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Rain, mainly before 8pm. Low around 35. Southwest wind 6 to 10 mph becoming northwest after midnight. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly sunny, with a high near 52. Northwest wind around 8 mph.
Saturday Night
Mostly cloudy, with a low around 35.
Sunday
A chance of showers after 2pm. Partly sunny, with a high near 58. Chance of precipitation is 40%.
Sunday Night
Rain likely. Mostly cloudy, with a low around 37. Chance of precipitation is 70%.
Monday
Partly sunny, with a high near 48.
Monday Night
Partly cloudy, with a low around 22.
Tuesday
Mostly sunny, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 27.
Wednesday
Partly sunny, with a high near 44.
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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:
12:54 pm EDT Mar 19, 2026
Forecast Valid:
1pm EDT Mar 19, 2026-6pm EDT Mar 25, 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