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 93%
Wind Speed Calm
Barometer 29.68 in
Dewpoint 30°F (-1°C)
Visibility 7.00 mi
Last update 26 Dec 7:55 pm EST
Extended Forecast for

2 Miles ENE Brockport PA

Ice Storm Warning December 26, 08:06pm until December 27, 07:00am
Click here for hazard details and duration
Ice Storm Warning
  •  
    Ice Storm Warning December 26, 08:06pm until December 27, 07:00am

    NOW until 7:00am Sat

    Ice Storm Warning

  • Tonight

    Low: 27 °F

    Chance
    Freezing Rain
    then Cloudy

  • Saturday

    Saturday: Cloudy, then gradually becoming mostly sunny, with a high near 35. Northwest wind around 5 mph becoming calm in the morning.

    High: 35 °F

    Decreasing
    Clouds

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 24. Light southeast wind.

    Low: 24 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of freezing rain before 10am, then rain showers. High near 46. Southeast wind 5 to 7 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 46 °F

    Chance
    Rain/Freezing
    Rain then
    Showers

  • Sunday Night

    Sunday Night: Showers. Low around 38. Southeast wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 38 °F

    Showers

  • Monday

    Monday: Rain showers before 1pm, then snow showers likely, possibly mixed with rain. High near 51. Breezy. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 51 °F

    Showers then
    Rain/Snow and
    Breezy

  • Monday Night

    Monday Night: Snow showers. Low around 18. Breezy. Chance of precipitation is 80%.

    Low: 18 °F

    Snow Showers
    and Breezy

  • Tuesday

    Tuesday: Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 24. Breezy. Chance of precipitation is 60%.

    High: 24 °F

    Snow Showers
    Likely and
    Breezy

Detailed Forecast

Tonight
A chance of freezing rain, mainly before 9pm. Cloudy, with a low around 27. Southeast wind around 6 mph becoming light and variable. Chance of precipitation is 40%.
Saturday
Cloudy, then gradually becoming mostly sunny, with a high near 35. Northwest wind around 5 mph becoming calm in the morning.
Saturday Night
Mostly cloudy, with a low around 24. Light southeast wind.
Sunday
A chance of freezing rain before 10am, then rain showers. High near 46. Southeast wind 5 to 7 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Sunday Night
Showers. Low around 38. Southeast wind 6 to 10 mph becoming southwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
Monday
Rain showers before 1pm, then snow showers likely, possibly mixed with rain. High near 51. Breezy. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Monday Night
Snow showers. Low around 18. Breezy. Chance of precipitation is 80%.
Tuesday
Snow showers likely, mainly before 1pm. Mostly cloudy, with a high near 24. Breezy. Chance of precipitation is 60%.
Tuesday Night
A chance of snow showers. Mostly cloudy, with a low around 18. Chance of precipitation is 50%.
Wednesday
Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 27. Chance of precipitation is 60%.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 14. Chance of precipitation is 50%.
New Year's Day
A chance of snow showers. Mostly cloudy, with a high near 20. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 9.
Friday
Mostly cloudy, with a high near 20.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Brockport PA
 41.29°N 78.69°W (Elev. 1585 ft)
Last Update:
7:16 pm EST Dec 26, 2025
Forecast Valid:
8pm EST Dec 26, 2025-6pm EST Jan 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation