National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Monticello, Sullivan County International Airport (KMSV)

Lat: 41.7°NLon: 74.8°WElev: 1404ft.

Fair

27°F

-3°C

Humidity 41%
Wind Speed W 14 G 22 mph
Barometer 29.99 in (1017.4 mb)
Dewpoint 6°F (-14°C)
Visibility 10.00 mi
Wind Chill16°F (-9°C)
Last update 23 Jan 12:56 pm EST
Extended Forecast for

Upper Mongaup NY

Cold Weather Advisory January 23, 07:00pm until January 24, 10:00am
Winter Storm Warning January 25, 01:00am until January 26, 07:00pm
Click here for hazard details and duration
Cold Weather Advisory
Winter Storm Warning

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 26. West wind around 13 mph, with gusts as high as 26 mph.

    High: 26 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 0. Wind chill values as low as -14. Northwest wind 9 to 14 mph, with gusts as high as 25 mph.

    Low: 0 °F

    Partly Cloudy

  • Saturday

    Saturday: Increasing clouds, with a high near 11. Wind chill values as low as -14. Northwest wind 6 to 8 mph.

    High: 11 °F

    Increasing
    Clouds

  • Saturday Night

    Saturday Night: A chance of snow after 1am. Cloudy, with a low around 4. Light north wind. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.

    Low: 4 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday

    Sunday: Snow. The snow could be heavy at times. High near 15. East wind 5 to 8 mph. Chance of precipitation is 100%.

    High: 15 °F

    Heavy Snow

  • Sunday Night

    Sunday Night: Snow. The snow could be heavy at times. Low around 9. Chance of precipitation is 100%.

    Low: 9 °F

    Heavy Snow

  • Monday

    Monday: A chance of snow. Mostly cloudy, with a high near 22. Chance of precipitation is 50%.

    High: 22 °F

    Chance Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 3.

    Low: 3 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 15.

    High: 15 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 26. West wind around 13 mph, with gusts as high as 26 mph.
Tonight
Partly cloudy, with a low around 0. Wind chill values as low as -14. Northwest wind 9 to 14 mph, with gusts as high as 25 mph.
Saturday
Increasing clouds, with a high near 11. Wind chill values as low as -14. Northwest wind 6 to 8 mph.
Saturday Night
A chance of snow after 1am. Cloudy, with a low around 4. Light north wind. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Sunday
Snow. The snow could be heavy at times. High near 15. East wind 5 to 8 mph. Chance of precipitation is 100%.
Sunday Night
Snow. The snow could be heavy at times. Low around 9. Chance of precipitation is 100%.
Monday
A chance of snow. Mostly cloudy, with a high near 22. Chance of precipitation is 50%.
Monday Night
Mostly cloudy, with a low around 3.
Tuesday
Mostly sunny, with a high near 15.
Tuesday Night
Partly cloudy, with a low around 0.
Wednesday
Mostly sunny, with a high near 19.
Wednesday Night
Mostly cloudy, with a low around 0.
Thursday
Mostly cloudy, with a high near 15.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Upper Mongaup NY
 41.47°N 74.8°W (Elev. 1224 ft)
Last Update:
12:57 pm EST Jan 23, 2026
Forecast Valid:
1pm EST Jan 23, 2026-6pm EST Jan 29, 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