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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

Saint Marys PA

  • Tonight

    Tonight: Mostly clear, with a low around 33. South wind 3 to 7 mph.

    Low: 33 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 48. West wind 5 to 8 mph.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Snow likely after 1am. Increasing clouds, with a low around 26. Light and variable wind. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    Low: 26 °F

    Partly Cloudy
    then Snow
    Likely

  • Sunday

    Sunday: A chance of snow before 1pm. Cloudy through mid morning, then gradual clearing, with a high near 32. North wind 6 to 9 mph. Chance of precipitation is 30%.

    High: 32 °F

    Chance Snow

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 11. Northwest wind around 6 mph becoming calm after midnight.

    Low: 11 °F

    Partly Cloudy

  • Monday

    Monday: A slight chance of snow. Partly sunny, with a high near 30. Chance of precipitation is 20%.

    High: 30 °F

    Slight Chance
    Snow

  • Monday Night

    Monday Night: A chance of snow and freezing rain after 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.

    Low: 18 °F

    Partly Cloudy
    then Chance
    Wintry Mix

  • Tuesday

    Tuesday: A chance of rain, snow, and freezing rain before 1pm, then rain or freezing rain likely. Mostly cloudy, with a high near 39. Chance of precipitation is 60%.

    High: 39 °F

    Wintry Mix
    Likely

  • Tuesday Night

    Tuesday Night: Rain likely, mainly before 1am. Cloudy, with a low around 30. Chance of precipitation is 60%.

    Low: 30 °F

    Rain Likely

Detailed Forecast

Tonight
Mostly clear, with a low around 33. South wind 3 to 7 mph.
Saturday
Mostly sunny, with a high near 48. West wind 5 to 8 mph.
Saturday Night
Snow likely after 1am. Increasing clouds, with a low around 26. Light and variable wind. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Sunday
A chance of snow before 1pm. Cloudy through mid morning, then gradual clearing, with a high near 32. North wind 6 to 9 mph. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 11. Northwest wind around 6 mph becoming calm after midnight.
Monday
A slight chance of snow. Partly sunny, with a high near 30. Chance of precipitation is 20%.
Monday Night
A chance of snow and freezing rain after 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.
Tuesday
A chance of rain, snow, and freezing rain before 1pm, then rain or freezing rain likely. Mostly cloudy, with a high near 39. Chance of precipitation is 60%.
Tuesday Night
Rain likely, mainly before 1am. Cloudy, with a low around 30. Chance of precipitation is 60%.
Wednesday
A chance of rain. Mostly cloudy, with a high near 48. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Mostly cloudy, with a low around 34. Chance of precipitation is 50%.
Thursday
Rain likely. Mostly cloudy, with a high near 52. Chance of precipitation is 70%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 41. Chance of precipitation is 70%.
Friday
Rain likely. Mostly cloudy, with a high near 54. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Marys PA
 41.43°N 78.54°W (Elev. 1709 ft)
Last Update:
1:41 pm EST Feb 27, 2026
Forecast Valid:
5pm EST Feb 27, 2026-6pm EST Mar 6, 2026
 
Forecast Discussion
 
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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