National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
News Headlines
Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

23°F

-5°C

Humidity 86%
Wind Speed W 8 mph
Barometer 30.07 in
Dewpoint 19°F (-7°C)
Visibility 7.00 mi
Wind Chill14°F (-10°C)
Last update 3 Feb 5:55 am EST
Extended Forecast for

4 Miles NW Sinnamahoning PA

  • Today

    Today: A chance of light snow, mainly before 7am. Cloudy, with a high near 26. West wind 5 to 7 mph. Chance of precipitation is 30%.

    High: 26 °F

    Chance Light
    Snow then
    Mostly Cloudy

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 5. Wind chill values as low as -5. Northwest wind around 6 mph.

    Low: 5 °F

    Gradual
    Clearing

  • Wednesday

    Wednesday: Mostly sunny, with a high near 25. Wind chill values as low as -5. Northwest wind around 6 mph.

    High: 25 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 5. Wind chill values as low as -5. Northwest wind around 5 mph.

    Low: 5 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 23. Northwest wind around 6 mph.

    High: 23 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 9.

    Low: 9 °F

    Mostly Cloudy

  • Friday

    Friday: Snow. High near 27. Chance of precipitation is 80%.

    High: 27 °F

    Snow

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 2.

    Low: 2 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 13.

    High: 13 °F

    Mostly Sunny

Detailed Forecast

Today
A chance of light snow, mainly before 7am. Cloudy, with a high near 26. West wind 5 to 7 mph. Chance of precipitation is 30%.
Tonight
Cloudy during the early evening, then gradual clearing, with a low around 5. Wind chill values as low as -5. Northwest wind around 6 mph.
Wednesday
Mostly sunny, with a high near 25. Wind chill values as low as -5. Northwest wind around 6 mph.
Wednesday Night
Mostly cloudy, with a low around 5. Wind chill values as low as -5. Northwest wind around 5 mph.
Thursday
Partly sunny, with a high near 23. Northwest wind around 6 mph.
Thursday Night
Mostly cloudy, with a low around 9.
Friday
Snow. High near 27. Chance of precipitation is 80%.
Friday Night
Mostly cloudy, with a low around 2.
Saturday
Mostly sunny, with a high near 13.
Saturday Night
Mostly cloudy, with a low around 1.
Sunday
Mostly sunny, with a high near 15.
Sunday Night
Partly cloudy, with a low around -2.
Monday
Mostly sunny, with a high near 20.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Sinnamahoning PA
 41.44°N 78.1°W (Elev. 1818 ft)
Last Update:
3:26 am EST Feb 3, 2026
Forecast Valid:
6am EST Feb 3, 2026-6pm EST Feb 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