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

3 Miles NW Sinnamahoning PA

  • This Afternoon

    This Afternoon: Freezing rain before 3pm, then rain showers. High near 37. South wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Total daytime ice accumulation of 0.1 to 0.3 of an inch possible.

    High: 37 °F

    Rain/Freezing
    Rain

  • Tonight

    Tonight: Showers, mainly before midnight. Low around 35. South wind 5 to 7 mph becoming northwest after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 35 °F

    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: Cloudy, then gradually becoming mostly sunny, with a high near 50. North wind around 5 mph becoming calm in the morning.

    High: 50 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 1am. Mostly cloudy, with a low around 41. Southeast wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 41 °F

    Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Showers. High near 53. Southeast wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 53 °F

    Showers

  • Thursday Night

    Thursday Night: Showers. Low around 48. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 48 °F

    Showers

  • Friday

    Friday: Partly sunny, with a high near 61.

    High: 61 °F

    Partly Sunny

  • Friday Night

    Friday Night: A chance of showers after 1am. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.

    Low: 49 °F

    Mostly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A chance of showers, then showers and possibly a thunderstorm after 1pm. High near 66. Chance of precipitation is 80%.

    High: 66 °F

    Chance
    Showers then
    Showers

Detailed Forecast

This Afternoon
Freezing rain before 3pm, then rain showers. High near 37. South wind around 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. Total daytime ice accumulation of 0.1 to 0.3 of an inch possible.
Tonight
Showers, mainly before midnight. Low around 35. South wind 5 to 7 mph becoming northwest after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Wednesday
Cloudy, then gradually becoming mostly sunny, with a high near 50. North wind around 5 mph becoming calm in the morning.
Wednesday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 41. Southeast wind around 6 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Showers. High near 53. Southeast wind around 6 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Showers. Low around 48. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
Partly sunny, with a high near 61.
Friday Night
A chance of showers after 1am. Mostly cloudy, with a low around 49. 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 80%.
Saturday Night
Showers likely, mainly before 1am. Mostly cloudy, with a low around 47. Chance of precipitation is 70%.
Sunday
Mostly sunny, with a high near 58.
Sunday Night
Partly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 61.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NW Sinnamahoning PA
 41.41°N 78.11°W (Elev. 2169 ft)
Last Update:
1:01 pm EST Mar 3, 2026
Forecast Valid:
1pm EST Mar 3, 2026-6pm EDT Mar 9, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation