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

Hazardous Weather Conditions

Current conditions at

Cortland County-Chase Field (KN03)

Lat: 42.59°NLon: 76.21°WElev: 1198ft.

Overcast

63°F

17°C

Humidity 94%
Wind Speed Calm
Barometer 29.80 in
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 26 Sep 2:15 am EDT
Extended Forecast for

Marathon NY

Dense Fog Advisory until September 26, 08:00am
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory until September 26, 08:00am

    NOW until 8:00am Fri

    Dense Fog Advisory

  • Overnight

    Low: 57 °F

    Patchy Dense
    Fog

  • Friday

    Friday: Patchy dense fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 74. Northwest wind 3 to 7 mph.

    High: 74 °F

    Patchy Dense
    Fog then
    Partly Sunny

  • Friday Night

    Friday Night: Patchy dense fog after 10pm. Otherwise, increasing clouds, with a low around 49. Calm wind.

    Low: 49 °F

    Patchy Dense
    Fog

  • Saturday

    Saturday: Areas of fog before 9am. Otherwise, partly sunny, with a high near 75. Light and variable wind.

    High: 75 °F

    Areas Fog
    then Partly
    Sunny

  • Saturday Night

    Saturday Night: Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 52. Calm wind.

    Low: 52 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 79.

    High: 79 °F

    Patchy Fog
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 50.

    Low: 50 °F

    Mostly Clear

  • Monday

    Monday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

Overnight
Patchy dense fog. Otherwise, mostly cloudy, with a low around 57. Calm wind.
Friday
Patchy dense fog before 8am. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 74. Northwest wind 3 to 7 mph.
Friday Night
Patchy dense fog after 10pm. Otherwise, increasing clouds, with a low around 49. Calm wind.
Saturday
Areas of fog before 9am. Otherwise, partly sunny, with a high near 75. Light and variable wind.
Saturday Night
Patchy fog after 1am. Otherwise, mostly cloudy, with a low around 52. Calm wind.
Sunday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 79.
Sunday Night
Mostly clear, with a low around 50.
Monday
Mostly sunny, with a high near 78.
Monday Night
Mostly cloudy, with a low around 50.
Tuesday
Partly sunny, with a high near 75.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Sunny, with a high near 66.
Wednesday Night
Mostly clear, with a low around 37.
Thursday
Sunny, with a high near 64.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Marathon NY
 42.44°N 76.03°W (Elev. 1099 ft)
Last Update:
11:40 pm EDT Sep 25, 2025
Forecast Valid:
2am EDT Sep 26, 2025-6pm EDT Oct 2, 2025
 
Forecast Discussion
 
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Additional Resources

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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