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

Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

9°F

-13°C

Humidity 66%
Wind Speed NW 9 mph
Barometer 30.19 in
Dewpoint 0°F (-18°C)
Visibility 7.00 mi
Wind Chill-4°F (-20°C)
Last update 30 Jan 11:15 am EST
Extended Forecast for

4 Miles NW Sinnamahoning PA

Cold Weather Advisory January 30, 07:00pm until January 31, 10:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Today

    Today: Mostly sunny, with a high near 11. Wind chill values as low as -10. Northwest wind around 9 mph, with gusts as high as 22 mph.

    High: 11 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around -3. Wind chill values as low as -10. West wind around 6 mph.

    Low: -3 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 15. Wind chill values as low as -15. North wind around 6 mph.

    High: 15 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 1. Wind chill values as low as -15. North wind 6 to 9 mph, with gusts as high as 20 mph.

    Low: 1 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 19. Northwest wind around 11 mph, with gusts as high as 25 mph.

    High: 19 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 3.

    Low: 3 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 11.

    Low: 11 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 26.

    High: 26 °F

    Mostly Cloudy

Detailed Forecast

Today
Mostly sunny, with a high near 11. Wind chill values as low as -10. Northwest wind around 9 mph, with gusts as high as 22 mph.
Tonight
Partly cloudy, with a low around -3. Wind chill values as low as -10. West wind around 6 mph.
Saturday
Mostly sunny, with a high near 15. Wind chill values as low as -15. North wind around 6 mph.
Saturday Night
Mostly cloudy, with a low around 1. Wind chill values as low as -15. North wind 6 to 9 mph, with gusts as high as 20 mph.
Sunday
Mostly sunny, with a high near 19. Northwest wind around 11 mph, with gusts as high as 25 mph.
Sunday Night
Partly cloudy, with a low around 3.
Monday
Mostly sunny, with a high near 24.
Monday Night
Mostly cloudy, with a low around 11.
Tuesday
Mostly cloudy, with a high near 26.
Tuesday Night
Mostly cloudy, with a low around 11.
Wednesday
A chance of snow showers. Partly sunny, with a high near 26. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 11.
Thursday
Mostly sunny, with a high near 26.
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:
11:22 am EST Jan 30, 2026
Forecast Valid:
11am EST Jan 30, 2026-6pm EST Feb 5, 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