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 87%
Wind Speed W 5 mph
Barometer 29.87 in
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill27°F (-3°C)
Last update 11 Jan 5:35 am EST
Extended Forecast for

Grandview Park PA

  • Today

    Today: Snow showers, mainly after 2pm. The snow could be heavy at times. Areas of blowing snow after 3pm. High near 31. Breezy, with a west wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 1 to 2 inches possible.

    High: 31 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Tonight

    Tonight: Snow showers, mainly before midnight. Areas of blowing snow between 8pm and 9pm. Low around 23. Breezy, with a west wind 15 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 23 °F

    Snow Showers
    and Areas
    Blowing Snow
    then Mostly
    Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 33. Southwest wind 11 to 14 mph, with gusts as high as 26 mph.

    High: 33 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26. West wind around 10 mph, with gusts as high as 22 mph.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 39. South wind 8 to 10 mph, with gusts as high as 22 mph.

    High: 39 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 34. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 34 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers. High near 38. Chance of precipitation is 80%.

    High: 38 °F

    Showers

  • Wednesday Night

    Wednesday Night: Snow showers likely, mainly before 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 60%.

    Low: 18 °F

    Snow Showers
    Likely

  • Thursday

    Thursday: A chance of snow showers before 1pm. Mostly cloudy, with a high near 24. Chance of precipitation is 30%.

    High: 24 °F

    Chance Snow
    Showers

Detailed Forecast

Today
Snow showers, mainly after 2pm. The snow could be heavy at times. Areas of blowing snow after 3pm. High near 31. Breezy, with a west wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 37 mph. Chance of precipitation is 90%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
Snow showers, mainly before midnight. Areas of blowing snow between 8pm and 9pm. Low around 23. Breezy, with a west wind 15 to 21 mph, with gusts as high as 36 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Monday
Mostly sunny, with a high near 33. Southwest wind 11 to 14 mph, with gusts as high as 26 mph.
Monday Night
Partly cloudy, with a low around 26. West wind around 10 mph, with gusts as high as 22 mph.
Tuesday
Partly sunny, with a high near 39. South wind 8 to 10 mph, with gusts as high as 22 mph.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 34. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers. High near 38. Chance of precipitation is 80%.
Wednesday Night
Snow showers likely, mainly before 1am. Mostly cloudy, with a low around 18. Chance of precipitation is 60%.
Thursday
A chance of snow showers before 1pm. Mostly cloudy, with a high near 24. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 13.
Friday
A chance of snow showers. Partly sunny, with a high near 26. Chance of precipitation is 30%.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 16. Chance of precipitation is 40%.
Saturday
A chance of snow showers. Partly sunny, with a high near 29. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grandview Park PA
 41.41°N 78.55°W (Elev. 1804 ft)
Last Update:
1:06 am EST Jan 11, 2026
Forecast Valid:
5am EST Jan 11, 2026-6pm EST Jan 17, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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