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

  • Tonight

    Tonight: A chance of snow showers, mainly after 2am. Increasing clouds, with a low around 29. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 30%.

    Low: 29 °F

    Partly Cloudy
    then Chance
    Snow Showers

  • Sunday

    Sunday: Cloudy, then gradually becoming mostly sunny, with a high near 54. South wind 13 to 18 mph, with gusts as high as 33 mph.

    High: 54 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: A chance of showers after 2am. Mostly cloudy, with a low around 45. Southeast wind around 16 mph, with gusts as high as 33 mph. Chance of precipitation is 40%.

    Low: 45 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: Showers, mainly after 8am. High near 60. South wind around 16 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 60 °F

    Showers

  • Monday Night

    Monday Night: Snow showers likely, mainly before 2am. Mostly cloudy, with a low around 18. West wind 14 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.

    Low: 18 °F

    Snow Showers
    Likely

  • Tuesday

    Tuesday: A chance of snow showers, mainly before 8am. Mostly cloudy, with a high near 25. Chance of precipitation is 30%.

    High: 25 °F

    Chance Snow
    Showers

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 16.

    Low: 16 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 35.

    High: 35 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 27.

    Low: 27 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A chance of snow showers, mainly after 2am. Increasing clouds, with a low around 29. Calm wind becoming east around 5 mph after midnight. Chance of precipitation is 30%.
Sunday
Cloudy, then gradually becoming mostly sunny, with a high near 54. South wind 13 to 18 mph, with gusts as high as 33 mph.
Sunday Night
A chance of showers after 2am. Mostly cloudy, with a low around 45. Southeast wind around 16 mph, with gusts as high as 33 mph. Chance of precipitation is 40%.
Monday
Showers, mainly after 8am. High near 60. South wind around 16 mph, with gusts as high as 31 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Monday Night
Snow showers likely, mainly before 2am. Mostly cloudy, with a low around 18. West wind 14 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 60%. New snow accumulation of 1 to 2 inches possible.
Tuesday
A chance of snow showers, mainly before 8am. Mostly cloudy, with a high near 25. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 16.
Wednesday
Mostly cloudy, with a high near 35.
Wednesday Night
Mostly cloudy, with a low around 27.
Thursday
Mostly cloudy, with a high near 46.
Thursday Night
Mostly cloudy, with a low around 33.
Friday
Partly sunny, with a high near 51.
Friday Night
A chance of showers. Mostly cloudy, with a low around 32. Chance of precipitation is 40%.
Saturday
Partly sunny, with a high near 50.
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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:
2:28 pm EDT Mar 14, 2026
Forecast Valid:
7pm EDT Mar 14, 2026-6pm EDT Mar 21, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation