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 60%
Wind Speed S 6 G 20 mph
Barometer 30.27 in
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill26°F (-3°C)
Last update 29 Nov 10:35 pm EST
Extended Forecast for

2 Miles E Grandview Park PA

  • Tonight

    Tonight: Snow likely, mainly between 1am and 5am, then snow showers likely after 5am. Cloudy, with a low around 26. Southeast wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than one inch possible.

    Low: 26 °F

    Slight Chance
    Snow then
    Snow Likely

  • Sunday

    Sunday: Snow showers likely, possibly mixing with rain after noon, then gradually ending. The snow could be heavy at times. Cloudy, with a high near 39. South wind around 14 mph becoming west in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    High: 39 °F

    Heavy Snow
    then Chance
    Rain/Snow

  • Sunday Night

    Sunday Night: Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 22. West wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 22 °F

    Snow Showers
    Likely

  • Monday

    Monday: Partly sunny, with a high near 32. Northwest wind 5 to 8 mph becoming calm in the afternoon.

    High: 32 °F

    Partly Sunny

  • Monday Night

    Monday Night: Snow likely after 1am. Mostly cloudy, with a low around 22. Calm wind becoming southeast around 6 mph after midnight. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    Low: 22 °F

    Mostly Cloudy
    then Snow
    Likely

  • Tuesday

    Tuesday: Snow, mainly before 1pm. High near 34. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    High: 34 °F

    Snow

  • Tuesday Night

    Tuesday Night: A chance of snow before 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 30%.

    Low: 20 °F

    Chance Snow

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 32.

    High: 32 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: A chance of snow after 1am. Mostly cloudy, with a low around 22. Chance of precipitation is 40%.

    Low: 22 °F

    Mostly Cloudy
    then Chance
    Snow

Detailed Forecast

Tonight
Snow likely, mainly between 1am and 5am, then snow showers likely after 5am. Cloudy, with a low around 26. Southeast wind 9 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 70%. Total nighttime snow accumulation of less than one inch possible.
Sunday
Snow showers likely, possibly mixing with rain after noon, then gradually ending. The snow could be heavy at times. Cloudy, with a high near 39. South wind around 14 mph becoming west in the afternoon. Winds could gust as high as 29 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Sunday Night
Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 22. West wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday
Partly sunny, with a high near 32. Northwest wind 5 to 8 mph becoming calm in the afternoon.
Monday Night
Snow likely after 1am. Mostly cloudy, with a low around 22. Calm wind becoming southeast around 6 mph after midnight. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Tuesday
Snow, mainly before 1pm. High near 34. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
Tuesday Night
A chance of snow before 1am. Mostly cloudy, with a low around 20. Chance of precipitation is 30%.
Wednesday
Mostly cloudy, with a high near 32.
Wednesday Night
A chance of snow after 1am. Mostly cloudy, with a low around 22. Chance of precipitation is 40%.
Thursday
A chance of snow before 1pm. Mostly cloudy, with a high near 29. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 13.
Friday
A chance of snow. Mostly cloudy, with a high near 28. Chance of precipitation is 40%.
Friday Night
Snow likely. Mostly cloudy, with a low around 18. Chance of precipitation is 60%.
Saturday
A chance of snow. Mostly cloudy, with a high near 32. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles E Grandview Park PA
 41.41°N 78.49°W (Elev. 1752 ft)
Last Update:
10:36 pm EST Nov 29, 2025
Forecast Valid:
10pm EST Nov 29, 2025-6pm EST Dec 6, 2025
 
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