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

37°F

3°C

Humidity 93%
Wind Speed Calm
Barometer 30.18 in
Dewpoint 36°F (2°C)
Visibility 10.00 mi
Last update 16 Oct 8:35 am EDT
Extended Forecast for

5 Miles N Sinnamahoning PA

  • Today

    Today: Sunny, with a high near 61. North wind 5 to 8 mph.

    High: 61 °F

    Sunny

  • Tonight

    Tonight: Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 31. North wind around 5 mph becoming calm in the evening.

    Low: 31 °F

    Clear then
    Frost

  • Friday

    Friday: Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 63. Light northwest wind.

    High: 63 °F

    Frost then
    Mostly Sunny

  • Friday Night

    Friday Night: A slight chance of showers after 2am. Mostly cloudy, with a low around 42. Calm wind. Chance of precipitation is 20%.

    Low: 42 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 70. Calm wind becoming south around 6 mph in the afternoon.

    High: 70 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: Showers likely, mainly after 2pm. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.

    High: 72 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers. Low around 45. Chance of precipitation is 80%.

    Low: 45 °F

    Showers

  • Monday

    Monday: A chance of showers. Partly sunny, with a high near 61. Chance of precipitation is 50%.

    High: 61 °F

    Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 61. North wind 5 to 8 mph.
Tonight
Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 31. North wind around 5 mph becoming calm in the evening.
Friday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 63. Light northwest wind.
Friday Night
A slight chance of showers after 2am. Mostly cloudy, with a low around 42. Calm wind. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 70. Calm wind becoming south around 6 mph in the afternoon.
Saturday Night
A chance of showers after 2am. Mostly cloudy, with a low around 50. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 72. Chance of precipitation is 70%.
Sunday Night
Showers. Low around 45. Chance of precipitation is 80%.
Monday
A chance of showers. Partly sunny, with a high near 61. Chance of precipitation is 50%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 40. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly sunny, with a high near 66. Chance of precipitation is 30%.
Tuesday Night
Showers likely. Mostly cloudy, with a low around 44. Chance of precipitation is 60%.
Wednesday
Showers likely. Partly sunny, with a high near 62. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
5 Miles N Sinnamahoning PA
 41.45°N 78.04°W (Elev. 1073 ft)
Last Update:
8:05 am EDT Oct 16, 2025
Forecast Valid:
8am EDT Oct 16, 2025-6pm EDT Oct 22, 2025
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation