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.

Mostly Cloudy

41°F

5°C

Humidity 66%
Wind Speed SW 3 mph
Barometer 29.56 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Last update 14 Jan 5:35 am EST
Extended Forecast for

2 Miles E Grandview Park PA

  • Today

    Today: Rain before 4pm, then rain, possibly mixed with snow. High near 39. Southwest wind 6 to 10 mph becoming west in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 39 °F

    Chance Rain
    then
    Rain/Snow

  • Tonight

    Tonight: Rain and snow, becoming all snow after 7pm. Low around 14. Northwest wind 6 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.

    Low: 14 °F

    Rain/Snow
    then Snow
    Likely

  • Thursday

    Thursday: A chance of snow showers. Mostly cloudy, with a high near 19. Wind chill values as low as zero. West wind around 14 mph, with gusts as high as 31 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 19 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: A slight chance of snow showers before 1am. Mostly cloudy, with a low around 11. Wind chill values as low as zero. West wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.

    Low: 11 °F

    Slight Chance
    Snow Showers

  • Friday

    Friday: Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 27. South wind 9 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.

    High: 27 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Friday Night

    Friday Night: A chance of snow showers, mainly before 1am. Mostly cloudy, with a low around 23. Chance of precipitation is 40%.

    Low: 23 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: Snow showers likely. Mostly cloudy, with a high near 31. Chance of precipitation is 70%.

    High: 31 °F

    Snow Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of snow showers before 1am. Mostly cloudy, with a low around 9. Chance of precipitation is 30%.

    Low: 9 °F

    Chance Snow
    Showers

  • Sunday

    Sunday: Partly sunny, with a high near 19.

    High: 19 °F

    Partly Sunny

Detailed Forecast

Today
Rain before 4pm, then rain, possibly mixed with snow. High near 39. Southwest wind 6 to 10 mph becoming west in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Tonight
Rain and snow, becoming all snow after 7pm. Low around 14. Northwest wind 6 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 19. Wind chill values as low as zero. West wind around 14 mph, with gusts as high as 31 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Thursday Night
A slight chance of snow showers before 1am. Mostly cloudy, with a low around 11. Wind chill values as low as zero. West wind 10 to 13 mph, with gusts as high as 26 mph. Chance of precipitation is 20%.
Friday
Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 27. South wind 9 to 11 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New snow accumulation of less than one inch possible.
Friday Night
A chance of snow showers, mainly before 1am. Mostly cloudy, with a low around 23. Chance of precipitation is 40%.
Saturday
Snow showers likely. Mostly cloudy, with a high near 31. Chance of precipitation is 70%.
Saturday Night
A chance of snow showers before 1am. Mostly cloudy, with a low around 9. Chance of precipitation is 30%.
Sunday
Partly sunny, with a high near 19.
Sunday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 9. Chance of precipitation is 30%.
M.L.King Day
A chance of snow showers. Mostly cloudy, with a high near 19. Chance of precipitation is 50%.
Monday Night
A chance of snow showers. Mostly cloudy, with a low around 6. Chance of precipitation is 40%.
Tuesday
A chance of snow showers. Mostly cloudy, with a high near 14. 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:
2 Miles E Grandview Park PA
 41.41°N 78.49°W (Elev. 1752 ft)
Last Update:
4:46 am EST Jan 14, 2026
Forecast Valid:
5am EST Jan 14, 2026-6pm EST Jan 20, 2026
 
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