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

41°F

5°C

Humidity 66%
Wind Speed SW 6 mph
Barometer 29.57 in
Dewpoint 30°F (-1°C)
Visibility 10.00 mi
Wind Chill37°F (3°C)
Last update 14 Jan 2:35 am EST
Extended Forecast for

2 Miles ENE Brockport PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 37. Southwest wind around 9 mph, with gusts as high as 23 mph.

    Low: 37 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Rain, mainly after noon. High near 40. Southwest wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.

    High: 40 °F

    Chance Rain
    then Rain

  • Wednesday Night

    Wednesday Night: Snow, possibly mixed with rain, becoming all snow after 7pm. Low around 15. Northwest wind 5 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    Low: 15 °F

    Rain/Snow
    then Snow
    Likely

  • Thursday

    Thursday: Snow showers likely. Mostly cloudy, with a high near 19. Wind chill values as low as zero. West wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 19 °F

    Snow Showers
    Likely

  • Thursday Night

    Thursday Night: A slight chance of snow showers before 1am. Mostly cloudy, with a low around 11. West wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 11 °F

    Slight Chance
    Snow Showers

  • Friday

    Friday: Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 28. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    High: 28 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Friday Night

    Friday Night: A chance of snow showers. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.

    Low: 24 °F

    Chance Snow
    Showers

  • Saturday

    Saturday: Snow showers likely. Mostly cloudy, with a high near 32. Chance of precipitation is 70%.

    High: 32 °F

    Snow Showers
    Likely

  • Saturday Night

    Saturday Night: A chance of snow showers before 1am. Mostly cloudy, with a low around 9. Chance of precipitation is 30%.

    Low: 9 °F

    Chance Snow
    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 37. Southwest wind around 9 mph, with gusts as high as 23 mph.
Wednesday
Rain, mainly after noon. High near 40. Southwest wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Snow, possibly mixed with rain, becoming all snow after 7pm. Low around 15. Northwest wind 5 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Thursday
Snow showers likely. Mostly cloudy, with a high near 19. Wind chill values as low as zero. West wind around 14 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Thursday Night
A slight chance of snow showers before 1am. Mostly cloudy, with a low around 11. West wind around 11 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Friday
Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 28. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 24. Chance of precipitation is 40%.
Saturday
Snow showers likely. Mostly cloudy, with a high near 32. Chance of precipitation is 70%.
Saturday Night
A chance of snow showers before 1am. Mostly cloudy, with a low around 9. Chance of precipitation is 30%.
Sunday
Partly sunny, with a high near 19.
Sunday Night
A chance of snow showers. Mostly cloudy, with a low around 9. Chance of precipitation is 30%.
M.L.King Day
A chance of snow showers. Mostly cloudy, with a high near 20. Chance of precipitation is 50%.
Monday Night
A chance of snow showers. Mostly cloudy, with a low around 6. Chance of precipitation is 40%.
Tuesday
A chance of snow showers. Mostly cloudy, with a high near 15. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Brockport PA
 41.29°N 78.69°W (Elev. 1585 ft)
Last Update:
2:26 am EST Jan 14, 2026
Forecast Valid:
2am EST Jan 14, 2026-6pm EST Jan 20, 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