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.

Overcast

73°F

23°C

Humidity 31%
Wind Speed W 16 G 30 mph
Barometer 30.03 in
Dewpoint 41°F (5°C)
Visibility 7.00 mi
Last update 18 Apr 3:15 pm EDT
Extended Forecast for

3 Miles NNE Sinnamahoning PA

  • Tonight

    Tonight: Partly cloudy, with a low around 60. South wind 6 to 9 mph, with gusts as high as 24 mph.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 74. Southwest wind 9 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers, mainly before 8pm. Low around 45. Northwest wind 6 to 8 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Showers then
    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 63. North wind around 6 mph.

    High: 63 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A slight chance of showers after 2am. Mostly cloudy, with a low around 45. Light east wind. Chance of precipitation is 20%.

    Low: 45 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Monday

    Monday: A chance of showers, mainly after 8am. Mostly cloudy, with a high near 68. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 68 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Showers likely, mainly before 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 70%.

    Low: 53 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers before 8am. Mostly sunny, with a high near 68. Chance of precipitation is 30%.

    High: 68 °F

    Chance
    Showers then
    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

Detailed Forecast

Tonight
Partly cloudy, with a low around 60. South wind 6 to 9 mph, with gusts as high as 24 mph.
Saturday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 74. Southwest wind 9 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers, mainly before 8pm. Low around 45. Northwest wind 6 to 8 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Mostly sunny, with a high near 63. North wind around 6 mph.
Sunday Night
A slight chance of showers after 2am. Mostly cloudy, with a low around 45. Light east wind. Chance of precipitation is 20%.
Monday
A chance of showers, mainly after 8am. Mostly cloudy, with a high near 68. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
Showers likely, mainly before 2am. Mostly cloudy, with a low around 53. Chance of precipitation is 70%.
Tuesday
A chance of showers before 8am. Mostly sunny, with a high near 68. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 42.
Wednesday
Sunny, with a high near 74.
Wednesday Night
Mostly clear, with a low around 49.
Thursday
Mostly sunny, with a high near 76.
Thursday Night
Mostly cloudy, with a low around 52.
Friday
A chance of showers. Partly sunny, with a high near 74. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Sinnamahoning PA
 41.43°N 78.02°W (Elev. 1565 ft)
Last Update:
2:40 pm EDT Apr 18, 2025
Forecast Valid:
3pm EDT Apr 18, 2025-6pm EDT Apr 25, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation