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 80%
Wind Speed W 18 G 33 mph
Barometer 29.84 in
Dewpoint 27°F (-3°C)
Visibility 4.00 mi
Wind Chill21°F (-6°C)
Last update 11 Jan 10:55 am EST
Extended Forecast for

Penfield PA

  • Today

    Today: Snow showers. The snow could be heavy at times. Areas of blowing snow after 3pm. High near 34. West wind 11 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. Total daytime snow accumulation of 1 to 2 inches possible.

    High: 34 °F

    Heavy Snow
    and Areas
    Blowing Snow

  • Tonight

    Tonight: Snow showers likely, mainly before 9pm. Areas of blowing snow between 8pm and 9pm. Mostly cloudy, with a low around 24. West wind 11 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Snow Showers
    Likely and
    Areas Blowing
    Snow

  • Monday

    Monday: Partly sunny, with a high near 35. West wind 9 to 11 mph, with gusts as high as 25 mph.

    High: 35 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 27. West wind around 8 mph, with gusts as high as 20 mph.

    Low: 27 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 42. South wind 6 to 9 mph, with gusts as high as 20 mph.

    High: 42 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers. Mostly cloudy, with a low around 35. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 35 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers. High near 40. Chance of precipitation is 80%.

    High: 40 °F

    Showers

  • Wednesday Night

    Wednesday Night: Rain and snow showers likely before 1am, then a chance of snow showers. Mostly cloudy, with a low around 20. Chance of precipitation is 60%.

    Low: 20 °F

    Rain/Snow
    Likely

  • Thursday

    Thursday: A chance of snow showers. Mostly cloudy, with a high near 26. Chance of precipitation is 30%.

    High: 26 °F

    Chance Snow
    Showers

Detailed Forecast

Today
Snow showers. The snow could be heavy at times. Areas of blowing snow after 3pm. High near 34. West wind 11 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 80%. Total daytime snow accumulation of 1 to 2 inches possible.
Tonight
Snow showers likely, mainly before 9pm. Areas of blowing snow between 8pm and 9pm. Mostly cloudy, with a low around 24. West wind 11 to 17 mph, with gusts as high as 33 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Monday
Partly sunny, with a high near 35. West wind 9 to 11 mph, with gusts as high as 25 mph.
Monday Night
Partly cloudy, with a low around 27. West wind around 8 mph, with gusts as high as 20 mph.
Tuesday
Partly sunny, with a high near 42. South wind 6 to 9 mph, with gusts as high as 20 mph.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 35. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers. High near 40. Chance of precipitation is 80%.
Wednesday Night
Rain and snow showers likely before 1am, then a chance of snow showers. Mostly cloudy, with a low around 20. Chance of precipitation is 60%.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 26. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 15.
Friday
A chance of snow showers. Partly sunny, with a high near 28. Chance of precipitation is 30%.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.
Saturday
A chance of snow showers. Partly sunny, 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:
Penfield PA
 41.22°N 78.58°W (Elev. 1306 ft)
Last Update:
8:11 am EST Jan 11, 2026
Forecast Valid:
11am EST Jan 11, 2026-6pm EST Jan 17, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation