National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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 W 18 G 33 mph
Barometer 29.85 in
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 27 Nov 3:35 am EST
Extended Forecast for

2 Miles NE Sinnamahoning PA

Winter Weather Advisory November 27, 07:00am until November 29, 01:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: Mostly cloudy, with a low around 29. West wind around 13 mph, with gusts as high as 39 mph.

    Low: 29 °F

    Mostly Cloudy

  • Thanksgiving Day

    Thanksgiving Day: Scattered flurries between 11am and 3pm, then a slight chance of snow showers after 3pm. Mostly cloudy, with a high near 39. West wind around 11 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.

    High: 39 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: Snow showers likely, mainly after 7pm. Mostly cloudy, with a low around 28. West wind around 10 mph, with gusts as high as 36 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 28 °F

    Snow Showers
    Likely

  • Friday

    Friday: Snow showers, mainly before 1pm. High near 39. West wind 10 to 13 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

    High: 39 °F

    Snow Showers

  • Friday Night

    Friday Night: A chance of snow showers. Mostly cloudy, with a low around 26. West wind 6 to 8 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.

    Low: 26 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: Mostly cloudy, with a high near 39.

    High: 39 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: A chance of snow showers after 1am. Mostly cloudy, with a low around 26. Chance of precipitation is 50%.

    Low: 26 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Sunday

    Sunday: Snow showers before 1pm, then rain showers. High near 43. Chance of precipitation is 90%.

    High: 43 °F

    Snow Showers
    then
    Rain/Snow

  • Sunday Night

    Sunday Night: A chance of rain and snow showers before 1am. Cloudy, with a low around 27. Chance of precipitation is 50%.

    Low: 27 °F

    Chance
    Rain/Snow

Detailed Forecast

Overnight
Mostly cloudy, with a low around 29. West wind around 13 mph, with gusts as high as 39 mph.
Thanksgiving Day
Scattered flurries between 11am and 3pm, then a slight chance of snow showers after 3pm. Mostly cloudy, with a high near 39. West wind around 11 mph, with gusts as high as 37 mph. Chance of precipitation is 20%.
Thursday Night
Snow showers likely, mainly after 7pm. Mostly cloudy, with a low around 28. West wind around 10 mph, with gusts as high as 36 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Friday
Snow showers, mainly before 1pm. High near 39. West wind 10 to 13 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 26. West wind 6 to 8 mph, with gusts as high as 26 mph. Chance of precipitation is 40%.
Saturday
Mostly cloudy, with a high near 39.
Saturday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 26. Chance of precipitation is 50%.
Sunday
Snow showers before 1pm, then rain showers. High near 43. Chance of precipitation is 90%.
Sunday Night
A chance of rain and snow showers before 1am. Cloudy, with a low around 27. Chance of precipitation is 50%.
Monday
Mostly cloudy, with a high near 38.
Monday Night
A chance of snow. Mostly cloudy, with a low around 22. Chance of precipitation is 30%.
Tuesday
A chance of snow. Mostly cloudy, with a high near 37. Chance of precipitation is 40%.
Tuesday Night
Mostly cloudy, with a low around 20.
Wednesday
Partly sunny, with a high near 38.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NE Sinnamahoning PA
 41.41°N 78.02°W (Elev. 1007 ft)
Last Update:
3:21 am EST Nov 27, 2025
Forecast Valid:
3am EST Nov 27, 2025-6pm EST Dec 3, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation