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

6 Miles ESE Sinnamahoning PA

  • Tonight

    Tonight: Drizzle, mainly after 3am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 41. Southeast wind around 5 mph.

    Low: 41 °F

    Drizzle and
    Patchy Fog

  • Thursday

    Thursday: Rain. Patchy fog before 1pm. High near 48. East wind 3 to 6 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 48 °F

    Rain and
    Patchy Fog

  • Thursday Night

    Thursday Night: Rain and possibly a thunderstorm. Low around 43. Southeast wind around 8 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 43 °F

    Rain

  • Friday

    Friday: A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 57. South wind around 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 57 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers, mainly after 1am. Mostly cloudy, with a low around 48. Southeast wind around 9 mph. Chance of precipitation is 30%.

    Low: 48 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 66. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 66 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers likely before 1am. Mostly cloudy, with a low around 43. Chance of precipitation is 70%.

    Low: 43 °F

    Showers
    Likely

  • Sunday

    Sunday: Mostly sunny, with a high near 55.

    High: 55 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 39.

    Low: 39 °F

    Mostly Clear

Detailed Forecast

Tonight
Drizzle, mainly after 3am. Patchy fog after 10pm. Otherwise, cloudy, with a low around 41. Southeast wind around 5 mph.
Thursday
Rain. Patchy fog before 1pm. High near 48. East wind 3 to 6 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
Rain and possibly a thunderstorm. Low around 43. Southeast wind around 8 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
A chance of showers, mainly before 1pm. Mostly cloudy, with a high near 57. South wind around 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A chance of showers, mainly after 1am. Mostly cloudy, with a low around 48. Southeast wind around 9 mph. Chance of precipitation is 30%.
Saturday
A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 66. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely before 1am. Mostly cloudy, with a low around 43. Chance of precipitation is 70%.
Sunday
Mostly sunny, with a high near 55.
Sunday Night
Mostly clear, with a low around 39.
Monday
Sunny, with a high near 63.
Monday Night
Partly cloudy, with a low around 48.
Tuesday
A chance of showers. Partly sunny, with a high near 69. Chance of precipitation is 40%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 57. Chance of precipitation is 50%.
Wednesday
Showers likely. Mostly cloudy, with a high near 71. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ESE Sinnamahoning PA
 41.35°N 77.94°W (Elev. 1998 ft)
Last Update:
4:34 pm EST Mar 4, 2026
Forecast Valid:
5pm EST Mar 4, 2026-6pm EDT Mar 11, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation