News Headlines
Hazardous Weather Conditions
Current conditions at
St Marys Municipal Airport (KOYM)
Lat: 41.41°NLon: 78.5°WElev: 1934ft.
Mostly Cloudy
14°F
-10°C
| Humidity | 52% |
| Wind Speed | W 10 G 21 mph |
| Barometer | 30.24 in |
| Dewpoint | 0°F (-18°C) |
| Visibility | 10.00 mi |
| Wind Chill | 1°F (-17°C) |
| Last update | 20 Jan 2:55 pm EST |
Extended Forecast for
4 Miles NW Sinnamahoning PA
Winter Weather Advisory January 21, 12:00pm until January 22, 10:00am
Tonight
Low: 7 °F
Mostly Clear
Wednesday
High: 32 °F
Slight Chance
Snow then
Heavy SnowWednesday Night
Low: 26 °F
Snow
Thursday
High: 31 °F
Partly Sunny
Thursday Night
Low: 12 °F
Mostly Cloudy
Friday
High: 16 °F
Partly Sunny
Friday Night
Low: -1 °F
Mostly Cloudy
Saturday
High: 10 °F
Cold
Saturday Night
Low: 5 °F
Chance Snow
Detailed Forecast
Tonight
Mostly clear, with a low around 7. Wind chill values as low as -5. West wind 6 to 9 mph, with gusts as high as 20 mph.
Wednesday
Snow, mainly after 1pm. The snow could be heavy at times. High near 32. Wind chill values as low as -5. South wind 7 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Wednesday Night
Snow. Low around 26. Southwest wind 10 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Thursday
Partly sunny, with a high near 31. West wind around 14 mph, with gusts as high as 31 mph.
Thursday Night
Mostly cloudy, with a low around 12. West wind around 11 mph, with gusts as high as 24 mph.
Friday
Partly sunny, with a high near 16.
Friday Night
Mostly cloudy, with a low around -1.
Saturday
Partly sunny and cold, with a high near 10.
Saturday Night
A chance of snow. Mostly cloudy, with a low around 5. Chance of precipitation is 50%.
Sunday
A chance of snow. Mostly cloudy, with a high near 15. Chance of precipitation is 50%.
Sunday Night
A chance of snow. Mostly cloudy, with a low around 4. Chance of precipitation is 30%.
Monday
Partly sunny, with a high near 17.
Monday Night
Mostly cloudy, with a low around 5.
Tuesday
Partly sunny, with a high near 19.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
4 Miles NW Sinnamahoning PA
41.44°N 78.1°W (Elev. 1818 ft)
41.44°N 78.1°W (Elev. 1818 ft)
1:56 pm EST Jan 20, 2026
3pm EST Jan 20, 2026-6pm EST Jan 27, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
