Hazardous Weather Conditions
Current conditions at
St Marys Municipal Airport (KOYM)
Lat: 41.41°NLon: 78.5°WElev: 1934ft.
Mostly Cloudy
34°F
1°C
| Humidity | 81% |
| Wind Speed | SE 5 mph |
| Barometer | 30.08 in |
| Dewpoint | 28°F (-2°C) |
| Visibility | 10.00 mi |
| Wind Chill | 29°F (-2°C) |
| Last update | 25 Dec 2:35 am EST |
Extended Forecast for
4 Miles NW Sinnamahoning PA
Winter Storm Watch December 26, 07:00am until December 27, 07:00am
Overnight
Low: 31 °F
Mostly Cloudy
Christmas Day
High: 41 °F
Partly Sunny
Thursday Night
Low: 20 °F
Partly Cloudy
Friday
High: 26 °F
Chance Snow
then Wintry
MixFriday Night
Low: 23 °F
Wintry Mix
Saturday
High: 34 °F
Chance Snow
then Mostly
CloudySaturday Night
Low: 24 °F
Mostly Cloudy
Sunday
High: 40 °F
Chance
Rain/Freezing
Rain then
Rain/Freezing
RainSunday Night
Low: 31 °F
Rain
Detailed Forecast
Overnight
Mostly cloudy, with a low around 31. Light south wind.
Christmas Day
Partly sunny, with a high near 41. Light and variable wind becoming northwest 5 to 9 mph in the morning. Winds could gust as high as 22 mph.
Thursday Night
Partly cloudy, with a low around 20. North wind 5 to 9 mph becoming east after midnight. Winds could gust as high as 21 mph.
Friday
Snow and sleet before 3pm, then sleet, possibly mixed with snow and freezing rain between 3pm and 4pm, then sleet, possibly mixed with freezing rain after 4pm. The sleet could be heavy at times. High near 26. East wind 6 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 100%. New snow and sleet accumulation of less than one inch possible.
Friday Night
Freezing rain and sleet before 4am, then a chance of snow. The sleet could be heavy at times. Low around 23. Southeast wind 6 to 10 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New snow and sleet accumulation of less than a half inch possible.
Saturday
A chance of snow before 7am. Mostly cloudy, with a high near 34. Chance of precipitation is 30%.
Saturday Night
Mostly cloudy, with a low around 24.
Sunday
A chance of rain or freezing rain before 1pm, then rain. High near 40. Chance of precipitation is 80%.
Sunday Night
Rain. Low around 31. Chance of precipitation is 90%.
Monday
Rain and snow likely before 1pm, then a chance of snow. Mostly cloudy, with a high near 43. Chance of precipitation is 70%.
Monday Night
A chance of snow showers. Mostly cloudy, with a low around 18. Breezy. Chance of precipitation is 50%.
Tuesday
A chance of snow showers. Mostly cloudy, with a high near 25. Chance of precipitation is 30%.
Tuesday Night
Mostly cloudy, with a low around 18.
Wednesday
A chance of snow showers. Mostly cloudy, with a high near 28. Chance of precipitation is 30%.
Additional Forecasts and Information
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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)
2:16 am EST Dec 25, 2025
2am EST Dec 25, 2025-6pm EST Dec 31, 2025
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