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

Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

2 Miles ENE Brockport PA

Dense Fog Advisory March 4, 06:41am until March 4, 09:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory March 4, 06:41am until March 4, 09:00am

    NOW until 9:00am Wed

    Dense Fog Advisory

  • Today

    High: 52 °F

    Areas Dense
    Fog

  • Tonight

    Tonight: Rain likely, mainly after 4am. Patchy fog after midnight. Otherwise, cloudy, with a low around 42. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 42 °F

    Slight Chance
    Rain then
    Rain Likely
    and Patchy
    Fog

  • Thursday

    Thursday: Rain. Patchy fog before 10am. High near 57. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 57 °F

    Rain and
    Patchy Fog

  • Thursday Night

    Thursday Night: Rain. Low around 50. South wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 50 °F

    Rain

  • Friday

    Friday: A chance of rain, mainly before 1pm. Mostly cloudy, with a high near 63. Southwest wind 5 to 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Chance Rain

  • Friday Night

    Friday Night: A slight chance of rain, then a chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 53 °F

    Chance Rain

  • Saturday

    Saturday: Rain likely, then rain and possibly a thunderstorm after 1pm. High near 69. Chance of precipitation is 90%.

    High: 69 °F

    Rain Likely
    then Rain

  • Saturday Night

    Saturday Night: A chance of rain before 1am. Mostly cloudy, with a low around 40. Chance of precipitation is 50%.

    Low: 40 °F

    Chance Rain

Detailed Forecast

Today
Areas of dense fog before 1pm. Otherwise, mostly cloudy, with a high near 52. Light and variable wind.
Tonight
Rain likely, mainly after 4am. Patchy fog after midnight. Otherwise, cloudy, with a low around 42. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Rain. Patchy fog before 10am. High near 57. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Low around 50. South wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A chance of rain, mainly before 1pm. Mostly cloudy, with a high near 63. Southwest wind 5 to 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A slight chance of rain, then a chance of rain and thunderstorms after 1am. Mostly cloudy, with a low around 53. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Rain likely, then rain and possibly a thunderstorm after 1pm. High near 69. Chance of precipitation is 90%.
Saturday Night
A chance of rain before 1am. Mostly cloudy, with a low around 40. Chance of precipitation is 50%.
Sunday
Mostly sunny, with a high near 55.
Sunday Night
Partly cloudy, with a low around 40.
Monday
Sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 49.
Tuesday
A chance of rain. Partly sunny, with a high near 69. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Brockport PA
 41.29°N 78.69°W (Elev. 1585 ft)
Last Update:
1:34 am EST Mar 4, 2026
Forecast Valid:
6am EST Mar 4, 2026-6pm EDT Mar 10, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation