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Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

9°F

-13°C

Humidity 72%
Wind Speed W 12 mph
Barometer 29.98 in
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill-6°F (-21°C)
Last update 28 Jan 11:55 pm EST
Extended Forecast for

6 Miles ESE Sinnamahoning PA

Cold Weather Advisory January 29, 01:00am until January 29, 10:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Overnight

    Overnight: Mostly cloudy, with a low around -1. Wind chill values as low as -20. West wind around 11 mph, with gusts as high as 21 mph.

    Low: -1 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of flurries before 1pm, then a slight chance of snow between 1pm and 2pm, then a chance of flurries after 2pm. Partly sunny, with a high near 14. Wind chill values as low as -15. West wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    High: 14 °F

    Mostly Sunny
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -5. Wind chill values as low as -20. Northwest wind 7 to 9 mph.

    Low: -5 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 12. Wind chill values as low as -15. Northwest wind 6 to 8 mph.

    High: 12 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -6. Northwest wind 6 to 8 mph.

    Low: -6 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 14.

    High: 14 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 2.

    Low: 2 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 17.

    High: 17 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 6.

    Low: 6 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around -1. Wind chill values as low as -20. West wind around 11 mph, with gusts as high as 21 mph.
Thursday
A chance of flurries before 1pm, then a slight chance of snow between 1pm and 2pm, then a chance of flurries after 2pm. Partly sunny, with a high near 14. Wind chill values as low as -15. West wind 10 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Thursday Night
Partly cloudy, with a low around -5. Wind chill values as low as -20. Northwest wind 7 to 9 mph.
Friday
Sunny, with a high near 12. Wind chill values as low as -15. Northwest wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around -6. Northwest wind 6 to 8 mph.
Saturday
Mostly sunny, with a high near 14.
Saturday Night
Mostly cloudy, with a low around 2.
Sunday
Mostly sunny, with a high near 17.
Sunday Night
Partly cloudy, with a low around 6.
Monday
Mostly sunny, with a high near 26.
Monday Night
Mostly cloudy, with a low around 12.
Tuesday
Partly sunny, with a high near 27.
Tuesday Night
Mostly cloudy, with a low around 9.
Wednesday
Partly sunny, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ESE Sinnamahoning PA
 41.35°N 77.94°W (Elev. 1998 ft)
Last Update:
10:02 pm EST Jan 28, 2026
Forecast Valid:
12am EST Jan 29, 2026-6pm EST Feb 4, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation