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

36°F

2°C

Humidity 87%
Wind Speed Calm
Barometer 30.21 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 10 Jan 4:35 am EST
Extended Forecast for

3 Miles ENE Penfield PA

  • Today

    Today: Rain likely, mainly after 4pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 43. Calm wind becoming east around 6 mph in the morning. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 43 °F

    Chance Rain
    and Patchy
    Fog then Rain
    Likely

  • Tonight

    Tonight: Rain before 10pm, then showers likely between 10pm and midnight. Low around 27. Southeast wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 27 °F

    Rain then
    Mostly Cloudy

  • Sunday

    Sunday: Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 33. West wind 10 to 17 mph, with gusts as high as 36 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 33 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 24. West wind 13 to 16 mph, with gusts as high as 36 mph.

    Low: 24 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 35. West wind around 11 mph, with gusts as high as 24 mph.

    High: 35 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 28.

    Low: 28 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 43.

    High: 43 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 34. Chance of precipitation is 40%.

    Low: 34 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly after 1pm. Mostly cloudy, with a high near 40. Chance of precipitation is 60%.

    High: 40 °F

    Showers
    Likely

Detailed Forecast

Today
Rain likely, mainly after 4pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 43. Calm wind becoming east around 6 mph in the morning. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.
Tonight
Rain before 10pm, then showers likely between 10pm and midnight. Low around 27. Southeast wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 24 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 33. West wind 10 to 17 mph, with gusts as high as 36 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Sunday Night
Mostly cloudy, with a low around 24. West wind 13 to 16 mph, with gusts as high as 36 mph.
Monday
Partly sunny, with a high near 35. West wind around 11 mph, with gusts as high as 24 mph.
Monday Night
Mostly cloudy, with a low around 28.
Tuesday
Partly sunny, with a high near 43.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 34. Chance of precipitation is 40%.
Wednesday
Showers likely, mainly after 1pm. Mostly cloudy, with a high near 40. Chance of precipitation is 60%.
Wednesday Night
A chance of rain and snow showers before 1am, then a chance of snow showers. Mostly cloudy, with a low around 19. Chance of precipitation is 50%.
Thursday
A chance of snow showers. Mostly sunny, with a high near 27. Chance of precipitation is 30%.
Thursday Night
Partly cloudy, with a low around 15.
Friday
A chance of snow showers. Partly sunny, with a high near 30. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles ENE Penfield PA
 41.23°N 78.55°W (Elev. 1299 ft)
Last Update:
1:06 am EST Jan 10, 2026
Forecast Valid:
4am EST Jan 10, 2026-6pm EST Jan 16, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation