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.

Mostly Cloudy

72°F

22°C

Humidity 53%
Wind Speed NW 13 mph
Barometer 29.91 in (1012.2 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 17 Apr 12:56 pm EDT
Extended Forecast for

Upper Mongaup NY

  • This Afternoon

    This Afternoon: Scattered showers, mainly between 4pm and 5pm. Partly sunny, with a high near 71. North wind around 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 71 °F

    Scattered
    Showers

  • Tonight

    Tonight: Scattered showers before 8pm. Partly cloudy, with a low around 51. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 51 °F

    Scattered
    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 70. Southeast wind 5 to 10 mph.

    High: 70 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Showers, mainly after 2am. Low around 45. Southeast wind 5 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 45 °F

    Slight Chance
    Showers then
    Showers

  • Sunday

    Sunday: Rain before 2pm, then showers likely after 2pm. High near 46. Northwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.

    High: 46 °F

    Rain

  • Sunday Night

    Sunday Night: Rain and snow showers likely before midnight, then a slight chance of snow showers between midnight and 2am. Partly cloudy, with a low around 29. Chance of precipitation is 60%.

    Low: 29 °F

    Rain/Snow
    Likely then
    Slight Chance
    Snow Showers

  • Monday

    Monday: Mostly sunny, with a high near 43.

    High: 43 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 23.

    Low: 23 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 52.

    High: 52 °F

    Sunny

Detailed Forecast

This Afternoon
Scattered showers, mainly between 4pm and 5pm. Partly sunny, with a high near 71. North wind around 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Tonight
Scattered showers before 8pm. Partly cloudy, with a low around 51. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly sunny, with a high near 70. Southeast wind 5 to 10 mph.
Saturday Night
Showers, mainly after 2am. Low around 45. Southeast wind 5 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
Rain before 2pm, then showers likely after 2pm. High near 46. Northwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 80%.
Sunday Night
Rain and snow showers likely before midnight, then a slight chance of snow showers between midnight and 2am. Partly cloudy, with a low around 29. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 43.
Monday Night
Mostly clear, with a low around 23.
Tuesday
Sunny, with a high near 52.
Tuesday Night
Partly cloudy, with a low around 37.
Wednesday
Mostly sunny, with a high near 63.
Wednesday Night
Partly cloudy, with a low around 38.
Thursday
Mostly sunny, with a high near 64.
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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:
12:32 pm EDT Apr 17, 2026
Forecast Valid:
1pm EDT Apr 17, 2026-6pm EDT Apr 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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