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Hazardous Weather Conditions
Current conditions at
St Marys Municipal Airport (KOYM)
Lat: 41.41°NLon: 78.5°WElev: 1934ft.
Overcast
28°F
-2°C
| Humidity | 64% |
| Wind Speed | S 8 mph |
| Barometer | 29.78 in |
| Dewpoint | 18°F (-8°C) |
| Visibility | 10.00 mi |
| Wind Chill | 20°F (-7°C) |
| Last update | 9 Dec 5:55 pm EST |
Extended Forecast for
4 Miles SE Sinnamahoning PA
Winter Weather Advisory December 10, 01:00am until December 10, 10:00pm
Tonight
Low: 25 °F
Mostly Cloudy
then Snow
LikelyWednesday

High: 37 °F
Snow
Wednesday Night

Low: 21 °F
Snow Showers
LikelyThursday

High: 27 °F
Chance Snow
ShowersThursday Night

Low: 20 °F
Chance Snow
ShowersFriday

High: 29 °F
Chance Snow
Friday Night

Low: 18 °F
Chance Snow
Saturday

High: 29 °F
Chance Snow
Saturday Night

Low: 19 °F
Snow Likely
Detailed Forecast
Tonight
Snow likely, mainly after 4am. Mostly cloudy, with a low around 25. Southwest wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. Total nighttime snow accumulation of less than a half inch possible.
Wednesday
Snow, mainly before 2pm. High near 37. South wind around 10 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. New snow accumulation of 1 to 2 inches possible.
Wednesday Night
Snow showers likely, mainly between 7pm and 1am. Mostly cloudy, with a low around 21. West wind around 11 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 27. West wind around 11 mph, with gusts as high as 32 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 20. West wind 9 to 11 mph, with gusts as high as 26 mph. Chance of precipitation is 30%.
Friday
A chance of snow. Mostly cloudy, with a high near 29. Chance of precipitation is 30%.
Friday Night
A chance of snow. Mostly cloudy, with a low around 18. Chance of precipitation is 50%.
Saturday
A chance of snow. Mostly cloudy, with a high near 29. Chance of precipitation is 50%.
Saturday Night
Snow likely. Mostly cloudy, with a low around 19. Chance of precipitation is 60%.
Sunday
A chance of snow. Mostly cloudy, with a high near 24. Chance of precipitation is 50%.
Sunday Night
Mostly cloudy, with a low around 10.
Monday
Partly sunny, with a high near 25.
Monday Night
A chance of snow. Mostly cloudy, with a low around 12. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 28.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
4 Miles SE Sinnamahoning PA
41.34°N 78°W (Elev. 1906 ft)
41.34°N 78°W (Elev. 1906 ft)
2:21 pm EST Dec 9, 2025
6pm EST Dec 9, 2025-6pm EST Dec 16, 2025



