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

54°F

12°C

Humidity 94%
Wind Speed SW 6 mph
Barometer 29.62 in
Dewpoint 52°F (11°C)
Visibility NA
Wind Chill52°F (11°C)
Last update 7 Nov 7:35 pm EST
Extended Forecast for

3 Miles ENE Penfield PA

  • Tonight

    Tonight: Showers, mainly before 10pm. Low around 42. Southwest wind 6 to 8 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Showers then
    Mostly Cloudy

  • Saturday

    Saturday: A slight chance of showers between 2pm and 3pm. Mostly cloudy, with a high near 56. West wind 5 to 7 mph. Chance of precipitation is 20%.

    High: 56 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly after 1am. Cloudy, with a low around 41. Calm wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 41 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday

    Sunday: Showers. High near 57. Southeast wind 5 to 9 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 57 °F

    Showers

  • Sunday Night

    Sunday Night: A chance of rain showers before 1am, then rain and snow showers likely between 1am and 4am, then snow showers likely after 4am. Mostly cloudy, with a low around 29. Northwest wind around 7 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    Low: 29 °F

    Chance
    Showers then
    Rain/Snow
    Likely

  • Monday

    Monday: A chance of snow showers. Mostly cloudy, with a high near 40. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 40 °F

    Chance Snow
    Showers

  • Monday Night

    Monday Night: Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 23. Chance of precipitation is 70%.

    Low: 23 °F

    Snow Showers
    Likely

  • Veterans Day

    Veterans Day: A chance of snow showers before 1pm. Mostly cloudy, with a high near 39. Chance of precipitation is 40%.

    High: 39 °F

    Chance Snow
    Showers

  • Tuesday Night

    Tuesday Night: A chance of snow showers. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.

    Low: 28 °F

    Chance Snow
    Showers

Detailed Forecast

Tonight
Showers, mainly before 10pm. Low around 42. Southwest wind 6 to 8 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
A slight chance of showers between 2pm and 3pm. Mostly cloudy, with a high near 56. West wind 5 to 7 mph. Chance of precipitation is 20%.
Saturday Night
Showers likely, mainly after 1am. Cloudy, with a low around 41. Calm wind. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
Showers. High near 57. Southeast wind 5 to 9 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
A chance of rain showers before 1am, then rain and snow showers likely between 1am and 4am, then snow showers likely after 4am. Mostly cloudy, with a low around 29. Northwest wind around 7 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Monday
A chance of snow showers. Mostly cloudy, with a high near 40. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Monday Night
Snow showers likely, mainly after 1am. Mostly cloudy, with a low around 23. Chance of precipitation is 70%.
Veterans Day
A chance of snow showers before 1pm. Mostly cloudy, with a high near 39. Chance of precipitation is 40%.
Tuesday Night
A chance of snow showers. Mostly cloudy, with a low around 28. Chance of precipitation is 40%.
Wednesday
A chance of rain and snow showers before 1pm, then a chance of rain showers. Mostly cloudy, with a high near 48. Chance of precipitation is 40%.
Wednesday Night
Rain and snow showers likely. Mostly cloudy, with a low around 33. Chance of precipitation is 70%.
Thursday
A chance of rain and snow showers. Partly sunny, with a high near 46. Chance of precipitation is 40%.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 30. Chance of precipitation is 30%.
Friday
Partly sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Penfield PA
 41.23°N 78.55°W (Elev. 1299 ft)
Last Update:
7:06 pm EST Nov 7, 2025
Forecast Valid:
7pm EST Nov 7, 2025-6pm EST Nov 14, 2025
 
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