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 NE Sinnamahoning PA

  • Tonight

    Tonight: Showers and possibly a thunderstorm. Low around 32. Southwest wind 10 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 32 °F

    Showers

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 41. Northwest wind around 14 mph, with gusts as high as 31 mph.

    High: 41 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 28. West wind around 6 mph becoming calm in the evening. Winds could gust as high as 20 mph.

    Low: 28 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow before 11am, then a chance of rain and snow between 11am and 2pm, then a chance of rain after 2pm. Mostly cloudy, with a high near 51. South wind 5 to 11 mph, with gusts as high as 37 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 51 °F

    Chance
    Rain/Snow

  • Friday Night

    Friday Night: A slight chance of rain, mixing with snow after 11pm, then gradually ending. Mostly cloudy, with a low around 30. West wind around 9 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.

    Low: 30 °F

    Slight Chance
    Rain/Snow

  • Saturday

    Saturday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of snow showers after 2am. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.

    Low: 29 °F

    Partly Cloudy
    then Chance
    Snow Showers

  • Sunday

    Sunday: A chance of snow showers before 2pm. Mostly cloudy, with a high near 54. Chance of precipitation is 40%.

    High: 54 °F

    Chance Snow
    Showers

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 43. Chance of precipitation is 70%.

    Low: 43 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Tonight
Showers and possibly a thunderstorm. Low around 32. Southwest wind 10 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 41. Northwest wind around 14 mph, with gusts as high as 31 mph.
Thursday Night
Partly cloudy, with a low around 28. West wind around 6 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Friday
A chance of snow before 11am, then a chance of rain and snow between 11am and 2pm, then a chance of rain after 2pm. Mostly cloudy, with a high near 51. South wind 5 to 11 mph, with gusts as high as 37 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Friday Night
A slight chance of rain, mixing with snow after 11pm, then gradually ending. Mostly cloudy, with a low around 30. West wind around 9 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.
Saturday
Mostly sunny, with a high near 45.
Saturday Night
A chance of snow showers after 2am. Mostly cloudy, with a low around 29. Chance of precipitation is 40%.
Sunday
A chance of snow showers before 2pm. Mostly cloudy, with a high near 54. Chance of precipitation is 40%.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 43. Chance of precipitation is 70%.
Monday
Rain showers likely before 2pm, then a chance of rain and snow showers. Mostly cloudy, with a high near 52. Chance of precipitation is 70%.
Monday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 20. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 33.
Tuesday Night
Partly cloudy, with a low around 17.
Wednesday
Mostly sunny, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NE Sinnamahoning PA
 41.41°N 78.02°W (Elev. 1007 ft)
Last Update:
7:21 pm EDT Mar 11, 2026
Forecast Valid:
8pm EDT Mar 11, 2026-6pm EDT Mar 18, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation