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 75%
Wind Speed W 16 G 30 mph
Barometer 29.86 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill21°F (-6°C)
Last update 27 Nov 1:35 am EST
Extended Forecast for

2 Miles ENE Brockport PA

Winter Weather Advisory November 27, 07:00am until November 29, 01:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: A slight chance of snow showers before 2am. Mostly cloudy, with a low around 25. West wind around 18 mph, with gusts as high as 43 mph. Chance of precipitation is 20%.

    Low: 25 °F

    Slight Chance
    Snow Showers

  • Thanksgiving Day

    Thanksgiving Day: A slight chance of snow showers before 1pm, then scattered flurries between 1pm and 3pm, then a chance of snow showers after 3pm. Mostly cloudy, with a high near 33. West wind 16 to 18 mph, with gusts as high as 41 mph. Chance of precipitation is 30%.

    High: 33 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: Snow showers, mainly after 7pm. Low around 23. West wind 14 to 16 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.

    Low: 23 °F

    Snow Showers

  • Friday

    Friday: Snow showers, mainly before 1pm. High near 33. West wind 15 to 18 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.

    High: 33 °F

    Snow Showers

  • Friday Night

    Friday Night: Snow showers likely, mainly before 1am. Mostly cloudy, with a low around 21. West wind 8 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    Low: 21 °F

    Snow Showers
    Likely

  • Saturday

    Saturday: Mostly cloudy, with a high near 33.

    High: 33 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Snow showers likely, mainly after 1am. Cloudy, with a low around 23. Chance of precipitation is 60%.

    Low: 23 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Sunday

    Sunday: Snow showers before 1pm, then rain and snow showers. High near 39. Chance of precipitation is 90%.

    High: 39 °F

    Snow Showers
    then
    Rain/Snow

  • Sunday Night

    Sunday Night: Snow showers likely, mainly before 1am. Cloudy, with a low around 23. Chance of precipitation is 60%.

    Low: 23 °F

    Snow Showers
    Likely

Detailed Forecast

Overnight
A slight chance of snow showers before 2am. Mostly cloudy, with a low around 25. West wind around 18 mph, with gusts as high as 43 mph. Chance of precipitation is 20%.
Thanksgiving Day
A slight chance of snow showers before 1pm, then scattered flurries between 1pm and 3pm, then a chance of snow showers after 3pm. Mostly cloudy, with a high near 33. West wind 16 to 18 mph, with gusts as high as 41 mph. Chance of precipitation is 30%.
Thursday Night
Snow showers, mainly after 7pm. Low around 23. West wind 14 to 16 mph, with gusts as high as 37 mph. Chance of precipitation is 90%. New snow accumulation of around an inch possible.
Friday
Snow showers, mainly before 1pm. High near 33. West wind 15 to 18 mph, with gusts as high as 37 mph. Chance of precipitation is 80%. New snow accumulation of around an inch possible.
Friday Night
Snow showers likely, mainly before 1am. Mostly cloudy, with a low around 21. West wind 8 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Saturday
Mostly cloudy, with a high near 33.
Saturday Night
Snow showers likely, mainly after 1am. Cloudy, with a low around 23. Chance of precipitation is 60%.
Sunday
Snow showers before 1pm, then rain and snow showers. High near 39. Chance of precipitation is 90%.
Sunday Night
Snow showers likely, mainly before 1am. Cloudy, with a low around 23. Chance of precipitation is 60%.
Monday
Mostly cloudy, with a high near 33.
Monday Night
A chance of snow showers. Mostly cloudy, with a low around 20. Chance of precipitation is 40%.
Tuesday
A chance of snow showers. Mostly cloudy, with a high near 33. Chance of precipitation is 40%.
Tuesday Night
A chance of snow showers. Mostly cloudy, with a low around 18. Chance of precipitation is 30%.
Wednesday
Partly sunny, with a high near 33.
Basemap Options
Click map to change the forecast location
Loading map...
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:
1:05 am EST Nov 27, 2025
Forecast Valid:
1am EST Nov 27, 2025-6pm EST Dec 3, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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