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Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

23°F

-5°C

Humidity 80%
Wind Speed W 14 G 25 mph
Barometer 29.50 in
Dewpoint 18°F (-8°C)
Visibility 1.50 mi
Wind Chill11°F (-12°C)
Last update 29 Dec 3:15 pm EST
Extended Forecast for

2 Miles ENE Brockport PA

Winter Weather Advisory December 29, 03:35pm until December 30, 01:00pm
Wind Advisory December 29, 03:35pm until December 30, 12:00pm
Click here for hazard details and duration
Winter Weather Advisory
Wind Advisory
  •  
    Winter Weather Advisory December 29, 03:35pm until December 30, 01:00pm
    Wind Advisory December 29, 03:35pm until December 30, 12:00pm

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 26 °F

    Snow Showers
    and Patchy
    Blowing Snow

  • Tonight

    Tonight: Snow showers likely, mainly before 3am. Areas of blowing snow. Mostly cloudy, with a low around 18. Wind chill values as low as zero. Windy, with a west wind 26 to 30 mph, with gusts as high as 48 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.

    Low: 18 °F

    Snow Showers
    Likely and
    Areas Blowing
    Snow

  • Tuesday

    Tuesday: A chance of snow showers. Patchy blowing snow before 1pm. Mostly cloudy, with a high near 23. Wind chill values as low as zero. Windy, with a west wind 17 to 26 mph, with gusts as high as 45 mph. Chance of precipitation is 40%.

    High: 23 °F

    Chance Snow
    Showers and
    Patchy
    Blowing Snow

  • Tuesday Night

    Tuesday Night: A chance of snow showers. Mostly cloudy, with a low around 17. West wind around 14 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    Low: 17 °F

    Chance Snow
    Showers

  • Wednesday

    Wednesday: Snow showers, mainly after 1pm. High near 27. West wind 11 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.

    High: 27 °F

    Chance Snow
    Showers then
    Snow Showers

  • Wednesday Night

    Wednesday Night: Snow showers, mainly before 1am. Low around 12. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.

    Low: 12 °F

    Snow Showers

  • New Year's Day

    New Year's Day: A chance of snow showers before 1pm. Mostly cloudy, with a high near 19. Chance of precipitation is 30%.

    High: 19 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: A chance of snow showers after 1am. Mostly cloudy, with a low around 11. Chance of precipitation is 30%.

    Low: 11 °F

    Mostly Cloudy
    then Chance
    Snow Showers

Detailed Forecast

This Afternoon
Snow showers, mainly after 4pm. Patchy blowing snow after 4pm. Steady temperature around 26. Windy, with a west wind around 29 mph, with gusts as high as 46 mph. Chance of precipitation is 80%. Total daytime snow accumulation of less than one inch possible.
Tonight
Snow showers likely, mainly before 3am. Areas of blowing snow. Mostly cloudy, with a low around 18. Wind chill values as low as zero. Windy, with a west wind 26 to 30 mph, with gusts as high as 48 mph. Chance of precipitation is 70%. New snow accumulation of around an inch possible.
Tuesday
A chance of snow showers. Patchy blowing snow before 1pm. Mostly cloudy, with a high near 23. Wind chill values as low as zero. Windy, with a west wind 17 to 26 mph, with gusts as high as 45 mph. Chance of precipitation is 40%.
Tuesday Night
A chance of snow showers. Mostly cloudy, with a low around 17. West wind around 14 mph, with gusts as high as 28 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Wednesday
Snow showers, mainly after 1pm. High near 27. West wind 11 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of 1 to 3 inches possible.
Wednesday Night
Snow showers, mainly before 1am. Low around 12. Chance of precipitation is 80%. New snow accumulation of 2 to 4 inches possible.
New Year's Day
A chance of snow showers before 1pm. Mostly cloudy, with a high near 19. Chance of precipitation is 30%.
Thursday Night
A chance of snow showers after 1am. Mostly cloudy, with a low around 11. Chance of precipitation is 30%.
Friday
Mostly cloudy, with a high near 25.
Friday Night
Mostly cloudy, with a low around 15.
Saturday
Mostly cloudy, with a high near 29.
Saturday Night
Mostly cloudy, with a low around 13.
Sunday
Partly sunny, with a high near 30.
Sunday Night
Mostly cloudy, with a low around 19.
Monday
A chance of snow showers. Mostly cloudy, with a high near 34.
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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:
2:21 pm EST Dec 29, 2025
Forecast Valid:
3pm EST Dec 29, 2025-6pm EST Jan 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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