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Hazardous Weather Conditions
Current conditions at
St Marys Municipal Airport (KOYM)
Lat: 41.41°NLon: 78.5°WElev: 1934ft.
Overcast
32°F
0°C
| Humidity | 64% |
| Wind Speed | SE 7 mph |
| Barometer | 30.30 in |
| Dewpoint | 21°F (-6°C) |
| Visibility | 10.00 mi |
| Wind Chill | 25°F (-4°C) |
| Last update | 29 Nov 9:15 pm EST |
Extended Forecast for
3 Miles NW Sinnamahoning PA
Tonight
Low: 27 °F
Slight Chance
Snow then
Snow LikelySunday
High: 38 °F
Heavy Snow
then Chance
Rain/SnowSunday Night

Low: 24 °F
Chance Snow
ShowersMonday

High: 32 °F
Partly Sunny
Monday Night
Low: 23 °F
Mostly Cloudy
then Snow
LikelyTuesday

High: 33 °F
Snow
Tuesday Night

Low: 21 °F
Mostly Cloudy
Wednesday

High: 32 °F
Mostly Cloudy
Wednesday Night
Low: 24 °F
Mostly Cloudy
then Chance
Snow
Detailed Forecast
Tonight
Snow likely, mainly after 1am. Cloudy, with a low around 27. South wind 8 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than a half inch possible.
Sunday
Snow showers likely, possibly mixing with rain after 2pm, then gradually ending. The snow could be heavy at times. Cloudy, with a high near 38. South wind 10 to 15 mph becoming southwest in the afternoon. Winds could gust as high as 28 mph. Chance of precipitation is 70%. New snow accumulation of less than one inch possible.
Sunday Night
A chance of snow showers after 7pm. Mostly cloudy, with a low around 24. West wind around 14 mph, with gusts as high as 28 mph. Chance of precipitation is 40%.
Monday
Partly sunny, with a high near 32. Northwest wind 5 to 9 mph becoming calm in the afternoon. Winds could gust as high as 20 mph.
Monday Night
Snow likely after 1am. Mostly cloudy, with a low around 23. Calm wind becoming southeast 5 to 8 mph in the evening. Chance of precipitation is 60%. New snow accumulation of 1 to 3 inches possible.
Tuesday
Snow, mainly before 1pm. High near 33. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Tuesday Night
Mostly cloudy, with a low around 21.
Wednesday
Mostly cloudy, with a high near 32.
Wednesday Night
A chance of snow after 1am. Mostly cloudy, with a low around 24. Chance of precipitation is 30%.
Thursday
A chance of snow before 1pm. Mostly cloudy, with a high near 30. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 16.
Friday
A chance of snow. Mostly cloudy, with a high near 28. Chance of precipitation is 30%.
Friday Night
A chance of snow. Mostly cloudy, with a low around 20. Chance of precipitation is 50%.
Saturday
A chance of snow. Mostly cloudy, with a high near 30. Chance of precipitation is 50%.
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)
7:05 pm EST Nov 29, 2025
9pm EST Nov 29, 2025-6pm EST Dec 6, 2025



