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.

Overcast

28°F

-2°C

Humidity 80%
Wind Speed W 9 mph
Barometer 30.03 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill19°F (-7°C)
Last update 3 Dec 11:15 pm EST
Extended Forecast for

2 Miles ENE Brockport PA

  • Tonight

    Tonight: Snow likely, mainly after 4am. Cloudy, with a low around 22. West wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 22 °F

    Snow Likely

  • Thursday

    Thursday: A chance of snow showers, mainly before noon. Mostly cloudy, with a high near 30. West wind 11 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 30 °F

    Chance Snow
    Showers then
    Slight Chance
    Snow Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 7. West wind around 6 mph becoming calm in the evening.

    Low: 7 °F

    Partly Cloudy

  • Friday

    Friday: A slight chance of light snow after 1pm. Mostly sunny, with a high near 29. Wind chill values as low as zero. Light southeast wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 20%.

    High: 29 °F

    Mostly Sunny
    then Slight
    Chance Light
    Snow

  • Friday Night

    Friday Night: A slight chance of light snow after 1am. Mostly cloudy, with a low around 20. Light south wind. Chance of precipitation is 20%.

    Low: 20 °F

    Mostly Cloudy
    then Slight
    Chance Light
    Snow

  • Saturday

    Saturday: Mostly cloudy, with a high near 34.

    High: 34 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Cloudy, with a low around 25.

    Low: 25 °F

    Cloudy

  • Sunday

    Sunday: A chance of snow after 1pm. Mostly cloudy, with a high near 34. Chance of precipitation is 40%.

    High: 34 °F

    Mostly Cloudy
    then Chance
    Snow

  • Sunday Night

    Sunday Night: A chance of snow. Mostly cloudy, with a low around 12. Chance of precipitation is 40%.

    Low: 12 °F

    Chance Snow

Detailed Forecast

Tonight
Snow likely, mainly after 4am. Cloudy, with a low around 22. West wind 9 to 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.
Thursday
A chance of snow showers, mainly before noon. Mostly cloudy, with a high near 30. West wind 11 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Thursday Night
Partly cloudy, with a low around 7. West wind around 6 mph becoming calm in the evening.
Friday
A slight chance of light snow after 1pm. Mostly sunny, with a high near 29. Wind chill values as low as zero. Light southeast wind becoming south 5 to 9 mph in the morning. Chance of precipitation is 20%.
Friday Night
A slight chance of light snow after 1am. Mostly cloudy, with a low around 20. Light south wind. Chance of precipitation is 20%.
Saturday
Mostly cloudy, with a high near 34.
Saturday Night
Cloudy, with a low around 25.
Sunday
A chance of snow after 1pm. Mostly cloudy, with a high near 34. Chance of precipitation is 40%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 12. Chance of precipitation is 40%.
Monday
Mostly sunny, with a high near 25.
Monday Night
Partly cloudy, with a low around 8.
Tuesday
A chance of snow. Mostly cloudy, with a high near 30. Chance of precipitation is 50%.
Tuesday Night
Snow likely. Mostly cloudy, with a low around 23. Chance of precipitation is 70%.
Wednesday
Rain and snow likely. Mostly cloudy, with a high near 36. Chance of precipitation is 70%.
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:
7:05 pm EST Dec 3, 2025
Forecast Valid:
11pm EST Dec 3, 2025-6pm EST Dec 10, 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