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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

3 Miles E Sinnamahoning PA

  • Tonight

    Tonight: A chance of snow showers between 2am and 4am, then snow likely after 4am. Increasing clouds, with a low around 25. Northwest wind around 6 mph becoming northeast after midnight. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.

    Low: 25 °F

    Partly Cloudy
    then Snow
    Likely

  • Sunday

    Sunday: Snow likely before 7am, then a slight chance of snow showers between 7am and 10am. Cloudy, then gradually becoming mostly sunny, with a high near 33. North wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Snow Likely
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 14. North wind 3 to 6 mph.

    Low: 14 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 34. Calm wind becoming south around 5 mph in the afternoon.

    High: 34 °F

    Sunny

  • Monday Night

    Monday Night: A slight chance of snow after 1am, mixing with freezing rain after 4am. Partly cloudy, with a low around 23. Southeast wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

    Low: 23 °F

    Mostly Clear
    then Slight
    Chance Wintry
    Mix

  • Tuesday

    Tuesday: Rain, snow and freezing rain likely, possibly mixed with sleet before 1pm, then rain. High near 41. Chance of precipitation is 90%. New snow and sleet accumulation of less than a half inch possible.

    High: 41 °F

    Wintry Mix
    Likely then
    Wintry Mix

  • Tuesday Night

    Tuesday Night: Showers, mainly before 1am. Low around 36. Chance of precipitation is 90%.

    Low: 36 °F

    Showers

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 50.

    High: 50 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.

    Low: 42 °F

    Showers
    Likely

Detailed Forecast

Tonight
A chance of snow showers between 2am and 4am, then snow likely after 4am. Increasing clouds, with a low around 25. Northwest wind around 6 mph becoming northeast after midnight. Chance of precipitation is 60%. Total nighttime snow accumulation of less than one inch possible.
Sunday
Snow likely before 7am, then a slight chance of snow showers between 7am and 10am. Cloudy, then gradually becoming mostly sunny, with a high near 33. North wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday Night
Partly cloudy, with a low around 14. North wind 3 to 6 mph.
Monday
Sunny, with a high near 34. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
A slight chance of snow after 1am, mixing with freezing rain after 4am. Partly cloudy, with a low around 23. Southeast wind around 7 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.
Tuesday
Rain, snow and freezing rain likely, possibly mixed with sleet before 1pm, then rain. High near 41. Chance of precipitation is 90%. New snow and sleet accumulation of less than a half inch possible.
Tuesday Night
Showers, mainly before 1am. Low around 36. Chance of precipitation is 90%.
Wednesday
Mostly cloudy, with a high near 50.
Wednesday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.
Thursday
Showers likely. Mostly cloudy, with a high near 56. Chance of precipitation is 60%.
Thursday Night
Showers likely. Mostly cloudy, with a low around 48. Chance of precipitation is 70%.
Friday
Showers likely. Mostly cloudy, with a high near 62. Chance of precipitation is 60%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 50. Chance of precipitation is 50%.
Saturday
Showers likely. Mostly cloudy, with a high near 64. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles E Sinnamahoning PA
 41.38°N 78°W (Elev. 1988 ft)
Last Update:
5:11 pm EST Feb 28, 2026
Forecast Valid:
5pm EST Feb 28, 2026-6pm EST Mar 7, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation