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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

3 Miles NW Sinnamahoning PA

  • Overnight

    Overnight: Areas of fog. Otherwise, cloudy, with a low around 35. West wind around 8 mph.

    Low: 35 °F

    Areas Fog

  • Tuesday

    Tuesday: Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 46. West wind 5 to 8 mph.

    High: 46 °F

    Areas Fog
    then Mostly
    Cloudy

  • Tuesday Night

    Tuesday Night: A chance of rain, mainly after 3am. Mostly cloudy, with a low around 37. Light and variable wind becoming south around 5 mph after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday

    Wednesday: Rain, mainly after 7am. High near 49. South wind 6 to 9 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 49 °F

    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain before 1am. Mostly cloudy, with a low around 37. West wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 37 °F

    Chance Rain

  • Thursday

    Thursday: A chance of rain after 1pm. Mostly cloudy, with a high near 48. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday Night

    Thursday Night: A chance of rain before 1am, then rain and snow likely between 1am and 4am, then rain likely after 4am. Mostly cloudy, with a low around 36. Chance of precipitation is 60%.

    Low: 36 °F

    Chance Rain
    then
    Rain/Snow
    Likely

  • Friday

    Friday: Rain, mainly before 1pm. High near 45. Chance of precipitation is 80%.

    High: 45 °F

    Rain

  • Friday Night

    Friday Night: A chance of rain before 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.

    Low: 32 °F

    Chance Rain

Detailed Forecast

Overnight
Areas of fog. Otherwise, cloudy, with a low around 35. West wind around 8 mph.
Tuesday
Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 46. West wind 5 to 8 mph.
Tuesday Night
A chance of rain, mainly after 3am. Mostly cloudy, with a low around 37. Light and variable wind becoming south around 5 mph after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain, mainly after 7am. High near 49. South wind 6 to 9 mph becoming southwest in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
A chance of rain before 1am. Mostly cloudy, with a low around 37. West wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A chance of rain after 1pm. Mostly cloudy, with a high near 48. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of rain before 1am, then rain and snow likely between 1am and 4am, then rain likely after 4am. Mostly cloudy, with a low around 36. Chance of precipitation is 60%.
Friday
Rain, mainly before 1pm. High near 45. Chance of precipitation is 80%.
Friday Night
A chance of rain before 1am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 40.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.
Sunday
A chance of snow. Mostly cloudy, with a high near 33. Chance of precipitation is 50%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 21. Chance of precipitation is 40%.
Monday
A chance of snow. Mostly cloudy, with a high near 28. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Sinnamahoning PA
 41.41°N 78.11°W (Elev. 2169 ft)
Last Update:
2:31 am EST Feb 17, 2026
Forecast Valid:
3am EST Feb 17, 2026-6pm EST Feb 23, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation