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Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast and Breezy

25°F

-4°C

Humidity 54%
Wind Speed W 22 G 31 mph
Barometer 29.78 in
Dewpoint 10°F (-12°C)
Visibility 7.00 mi
Wind Chill10°F (-12°C)
Last update 19 Jan 12:35 pm EST
Extended Forecast for

6 Miles SSE James City PA

Cold Weather Advisory January 19, 09:00pm until January 20, 12:00pm
Click here for hazard details and duration
Cold Weather Advisory

  • M.L.King Day

    M.L.King Day: Snow showers likely, mainly before 2pm. The snow could be heavy at times. Mostly cloudy, with a high near 21. Wind chill values as low as zero. West wind around 17 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than one inch possible.

    High: 21 °F

    Heavy Snow

  • Tonight

    Tonight: Mostly cloudy, with a low around 0. Wind chill values as low as -15. West wind 11 to 15 mph, with gusts as high as 31 mph.

    Low: 0 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 11. Wind chill values as low as -15. West wind 10 to 13 mph, with gusts as high as 28 mph.

    High: 11 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 5. Wind chill values as low as -5. West wind around 6 mph.

    Low: 5 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Snow showers, mainly after 1pm. High near 32. South wind 6 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

    High: 32 °F

    Chance Snow
    Showers then
    Snow Showers

  • Wednesday Night

    Wednesday Night: Snow likely, mainly before 1am. Mostly cloudy, with a low around 22. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    Low: 22 °F

    Snow Likely

  • Thursday

    Thursday: A chance of snow showers before 1pm. Partly sunny, with a high near 28. Chance of precipitation is 30%.

    High: 28 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 6.

    Low: 6 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy, with a high near 13.

    High: 13 °F

    Mostly Cloudy

Detailed Forecast

M.L.King Day
Snow showers likely, mainly before 2pm. The snow could be heavy at times. Mostly cloudy, with a high near 21. Wind chill values as low as zero. West wind around 17 mph, with gusts as high as 34 mph. Chance of precipitation is 70%. Total daytime snow accumulation of less than one inch possible.
Tonight
Mostly cloudy, with a low around 0. Wind chill values as low as -15. West wind 11 to 15 mph, with gusts as high as 31 mph.
Tuesday
Partly sunny, with a high near 11. Wind chill values as low as -15. West wind 10 to 13 mph, with gusts as high as 28 mph.
Tuesday Night
Partly cloudy, with a low around 5. Wind chill values as low as -5. West wind around 6 mph.
Wednesday
Snow showers, mainly after 1pm. High near 32. South wind 6 to 11 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.
Wednesday Night
Snow likely, mainly before 1am. Mostly cloudy, with a low around 22. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Thursday
A chance of snow showers before 1pm. Partly sunny, with a high near 28. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 6.
Friday
Mostly cloudy, with a high near 13.
Friday Night
Mostly cloudy, with a low around -4.
Saturday
Mostly cloudy and cold, with a high near 8.
Saturday Night
Mostly cloudy, with a low around -5.
Sunday
A chance of snow showers. Partly sunny, with a high near 11. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSE James City PA
 41.54°N 78.79°W (Elev. 1699 ft)
Last Update:
12:21 pm EST Jan 19, 2026
Forecast Valid:
12pm EST Jan 19, 2026-6pm EST Jan 25, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation