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

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

32°F

0°C

Humidity 69%
Wind Speed SW 8 mph
Barometer 29.79 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill25°F (-4°C)
Last update 12 Nov 12:55 am EST
Extended Forecast for

Grandview Park PA

  • Overnight

    Overnight: Isolated snow showers. Mostly cloudy, with a low around 24. Southwest wind 9 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 24 °F

    Isolated Snow
    Showers

  • Wednesday

    Wednesday: Scattered snow showers before 10am, then rain and snow showers likely between 10am and 3pm, then a chance of rain showers after 3pm. Cloudy, with a high near 40. Southwest wind 14 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 40 °F

    Rain/Snow
    Likely

  • Wednesday Night

    Wednesday Night: Rain and snow showers likely before 4am, then a slight chance of snow showers. Mostly cloudy, with a low around 30. West wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    Low: 30 °F

    Rain/Snow
    Likely then
    Chance
    Rain/Snow

  • Thursday

    Thursday: A chance of snow showers, mixing with rain after 7am, then gradually ending. Mostly cloudy, with a high near 42. West wind 11 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 42 °F

    Chance
    Rain/Snow

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 28. West wind 6 to 8 mph, with gusts as high as 20 mph.

    Low: 28 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a high near 46.

    High: 46 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 25.

    Low: 25 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of rain after 1pm. Mostly cloudy, with a high near 52. Chance of precipitation is 30%.

    High: 52 °F

    Partly Sunny
    then Chance
    Rain

  • Saturday Night

    Saturday Night: Rain. Low around 39. Chance of precipitation is 90%.

    Low: 39 °F

    Rain

Detailed Forecast

Overnight
Isolated snow showers. Mostly cloudy, with a low around 24. Southwest wind 9 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Wednesday
Scattered snow showers before 10am, then rain and snow showers likely between 10am and 3pm, then a chance of rain showers after 3pm. Cloudy, with a high near 40. Southwest wind 14 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Wednesday Night
Rain and snow showers likely before 4am, then a slight chance of snow showers. Mostly cloudy, with a low around 30. West wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Thursday
A chance of snow showers, mixing with rain after 7am, then gradually ending. Mostly cloudy, with a high near 42. West wind 11 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Mostly cloudy, with a low around 28. West wind 6 to 8 mph, with gusts as high as 20 mph.
Friday
Partly sunny, with a high near 46.
Friday Night
Partly cloudy, with a low around 25.
Saturday
A chance of rain after 1pm. Mostly cloudy, with a high near 52. Chance of precipitation is 30%.
Saturday Night
Rain. Low around 39. Chance of precipitation is 90%.
Sunday
Rain likely before 1pm, then a chance of rain and snow. Mostly cloudy, with a high near 51. Chance of precipitation is 70%.
Sunday Night
Rain and snow showers likely. Mostly cloudy, with a low around 29. Chance of precipitation is 60%.
Monday
A chance of snow showers. Partly sunny, with a high near 41. Chance of precipitation is 30%.
Monday Night
A chance of freezing rain. Mostly cloudy, with a low around 27. Chance of precipitation is 30%.
Tuesday
A chance of showers. Mostly cloudy, with a high near 42. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grandview Park PA
 41.43°N 78.52°W (Elev. 1883 ft)
Last Update:
12:57 am EST Nov 12, 2025
Forecast Valid:
1am EST Nov 12, 2025-6pm EST Nov 18, 2025
 
Forecast Discussion
 
Get as KML Get as XML

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