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.

Fair

21°F

-6°C

Humidity 42%
Wind Speed NE 3 mph
Barometer 30.23 in
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Last update 8 Dec 12:55 pm EST
Extended Forecast for

2 Miles ENE Brockport PA

  • This Afternoon

    This Afternoon: Partly sunny, with a high near 23. Northeast wind around 6 mph.

    High: 23 °F

    Partly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 6. Calm wind.

    Low: 6 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of snow showers, mainly between 1pm and 5pm. Increasing clouds, with a high near 32. Wind chill values as low as zero. Light south wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 40%.

    High: 32 °F

    Partly Sunny
    then Chance
    Snow Showers

  • Tuesday Night

    Tuesday Night: A slight chance of snow showers between 7pm and 1am, then snow after 1am. Low around 27. Southwest wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    Low: 27 °F

    Slight Chance
    Snow Showers
    then Snow

  • Wednesday

    Wednesday: Snow, possibly mixed with rain. High near 38. South wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.

    High: 38 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: Snow, possibly mixed with rain, becoming all snow after 10pm. Low around 21. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    Low: 21 °F

    Rain/Snow
    then Snow

  • Thursday

    Thursday: Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 28. Chance of precipitation is 60%.

    High: 28 °F

    Snow Showers
    Likely

  • Thursday Night

    Thursday Night: Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 17. Chance of precipitation is 60%.

    Low: 17 °F

    Snow Showers
    Likely

  • Friday

    Friday: Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 27. Chance of precipitation is 60%.

    High: 27 °F

    Snow Showers
    Likely

Detailed Forecast

This Afternoon
Partly sunny, with a high near 23. Northeast wind around 6 mph.
Tonight
Partly cloudy, with a low around 6. Calm wind.
Tuesday
A chance of snow showers, mainly between 1pm and 5pm. Increasing clouds, with a high near 32. Wind chill values as low as zero. Light south wind increasing to 6 to 11 mph in the morning. Winds could gust as high as 24 mph. Chance of precipitation is 40%.
Tuesday Night
A slight chance of snow showers between 7pm and 1am, then snow after 1am. Low around 27. Southwest wind 8 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Wednesday
Snow, possibly mixed with rain. High near 38. South wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of around an inch possible.
Wednesday Night
Snow, possibly mixed with rain, becoming all snow after 10pm. Low around 21. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Thursday
Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 28. Chance of precipitation is 60%.
Thursday Night
Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 17. Chance of precipitation is 60%.
Friday
Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 27. Chance of precipitation is 60%.
Friday Night
Snow showers. Low around 14. Chance of precipitation is 80%.
Saturday
Snow showers likely. Mostly cloudy, with a high near 24. Chance of precipitation is 60%.
Saturday Night
Snow showers likely. Mostly cloudy, with a low around 12. Chance of precipitation is 60%.
Sunday
A chance of snow showers. Mostly cloudy, with a high near 22. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Brockport PA
 41.29°N 78.69°W (Elev. 1585 ft)
Last Update:
1:05 pm EST Dec 8, 2025
Forecast Valid:
1pm EST Dec 8, 2025-6pm EST Dec 14, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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