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Hazardous Weather Conditions
Current conditions at
St Marys Municipal Airport (KOYM)
Lat: 41.41°NLon: 78.5°WElev: 1934ft.
Overcast
36°F
2°C
| Humidity | 93% |
| Wind Speed | SW 9 G 20 mph |
| Barometer | 29.30 in |
| Dewpoint | 34°F (1°C) |
| Visibility | 1.50 mi |
| Wind Chill | 29°F (-2°C) |
| Last update | 10 Dec 1:35 pm EST |
Extended Forecast for
3 Miles NW Sinnamahoning PA
Winter Weather Advisory December 10, 01:53pm until December 12, 04:00am
NOW until 4:00am Fri

Winter Weather Advisory
This Afternoon

High: 33 °F
Rain/Snow
Tonight
Low: 20 °F
Snow Likely
then Mostly
CloudyThursday

High: 24 °F
Snow Showers
LikelyThursday Night

Low: 19 °F
Chance Snow
ShowersFriday

High: 27 °F
Mostly Cloudy
Friday Night

Low: 16 °F
Chance Snow
Saturday

High: 27 °F
Chance Snow
Saturday Night

Low: 12 °F
Snow Likely
Detailed Forecast
This Afternoon
Snow before 5pm, then a chance of rain and snow. High near 33. Southwest wind around 10 mph, with gusts as high as 26 mph. Chance of precipitation is 100%. Total daytime snow accumulation of 2 to 4 inches possible.
Tonight
Snow likely before midnight, then a slight chance of snow after 5am. Mostly cloudy, with a low around 20. Northwest wind around 14 mph, with gusts as high as 33 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Thursday
Snow showers likely, mainly between 1pm and 2pm. Mostly cloudy, with a high near 24. West wind 11 to 14 mph, with gusts as high as 36 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Thursday Night
A chance of snow showers before 1am, then a slight chance of snow after 1am. Mostly cloudy, with a low around 19. West wind 10 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Friday
Mostly cloudy, with a high near 27. West wind 5 to 8 mph.
Friday Night
A chance of snow, mainly after 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 40%.
Saturday
A chance of snow. Mostly cloudy, with a high near 27. Chance of precipitation is 50%.
Saturday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 12. Chance of precipitation is 60%.
Sunday
A chance of snow. Mostly cloudy, with a high near 20. Chance of precipitation is 50%.
Sunday Night
Mostly cloudy, with a low around 11.
Monday
Mostly cloudy, with a high near 22.
Monday Night
A chance of snow. Mostly cloudy, with a low around 14. Chance of precipitation is 30%.
Tuesday
Mostly cloudy, with a high near 27.
Additional Forecasts and Information
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ABOUT THIS FORECAST
Point Forecast:
3 Miles NW Sinnamahoning PA
41.41°N 78.11°W (Elev. 2169 ft)
41.41°N 78.11°W (Elev. 2169 ft)
1:05 pm EST Dec 10, 2025
1pm EST Dec 10, 2025-6pm EST Dec 16, 2025



