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.

Fair

73°F

23°C

Humidity 44%
Wind Speed W 6 mph
Barometer 30.22 in (1023.2 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 29 Aug 4:56 pm EDT
Extended Forecast for

Atco PA

  • Tonight

    Tonight: Increasing clouds, with a low around 54. Light southwest wind.

    Low: 54 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Partly sunny, with a high near 80. Calm wind becoming southwest 5 to 8 mph in the morning.

    High: 80 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers between 3am and 5am. Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 61. Light west wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 61 °F

    Chance
    Showers and
    Patchy Fog

  • Monday

    Monday: A chance of showers, mainly after 2pm. Patchy fog before 10am. Otherwise, cloudy through mid morning, then becoming mostly sunny, with a high near 79. Light west wind. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 79 °F

    Chance
    Showers and
    Patchy Fog

  • Monday Night

    Monday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 60%.

    Low: 64 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.

    High: 82 °F

    Chance
    Showers then
    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely then
    Chance
    T-storms

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.

    High: 82 °F

    Mostly Cloudy
    then Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 70%.

    Low: 65 °F

    Showers
    Likely

Detailed Forecast

Tonight
Increasing clouds, with a low around 54. Light southwest wind.
Sunday
Partly sunny, with a high near 80. Calm wind becoming southwest 5 to 8 mph in the morning.
Sunday Night
A chance of showers between 3am and 5am. Patchy fog before 3am, then patchy fog after 4am. Otherwise, mostly cloudy, with a low around 61. Light west wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Monday
A chance of showers, mainly after 2pm. Patchy fog before 10am. Otherwise, cloudy through mid morning, then becoming mostly sunny, with a high near 79. Light west wind. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 60%.
Tuesday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.
Tuesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Wednesday
Showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 65. Chance of precipitation is 70%.
Thursday
A chance of showers. Mostly cloudy, with a high near 80. Chance of precipitation is 50%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 40%.
Friday
Partly sunny, with a high near 77.
Friday Night
Partly cloudy, with a low around 57.
Saturday
Mostly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Atco PA
 41.61°N 75.1°W (Elev. 1201 ft)
Last Update:
2:30 pm EDT Aug 29, 2026
Forecast Valid:
5pm EDT Aug 29, 2026-6pm EDT Sep 5, 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