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

19°F

-7°C

Humidity 58%
Wind Speed W 6 mph
Barometer 29.89 in
Dewpoint 7°F (-14°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 18 Jan 4:55 pm EST
Extended Forecast for

6 Miles SSE James City PA

Cold Weather Advisory January 19, 09:00pm until January 20, 11:00am
Click here for hazard details and duration
Cold Weather Advisory

  • Tonight

    Tonight: A slight chance of snow showers after 4am. Mostly cloudy, with a low around 12. Calm wind becoming southwest around 6 mph after midnight. Chance of precipitation is 20%.

    Low: 12 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • M.L.King Day

    M.L.King Day: A chance of snow showers. Mostly cloudy, with a high near 21. Wind chill values as low as zero. West wind 8 to 14 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.

    High: 21 °F

    Chance Snow
    Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 0. Wind chill values as low as -15. West wind 10 to 13 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 29 mph.

    High: 11 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 3. Southwest wind around 6 mph.

    Low: 3 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 31. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    High: 31 °F

    Chance Snow
    Showers then
    Snow Showers
    Likely

  • Wednesday Night

    Wednesday Night: Snow showers likely. Mostly cloudy, with a low around 19. Chance of precipitation is 70%.

    Low: 19 °F

    Snow Showers
    Likely

  • Thursday

    Thursday: A chance of snow showers. Mostly cloudy, with a high near 25. Chance of precipitation is 50%.

    High: 25 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 5.

    Low: 5 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of snow showers after 4am. Mostly cloudy, with a low around 12. Calm wind becoming southwest around 6 mph after midnight. Chance of precipitation is 20%.
M.L.King Day
A chance of snow showers. Mostly cloudy, with a high near 21. Wind chill values as low as zero. West wind 8 to 14 mph, with gusts as high as 36 mph. Chance of precipitation is 40%.
Monday Night
Mostly cloudy, with a low around 0. Wind chill values as low as -15. West wind 10 to 13 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 29 mph.
Tuesday Night
Partly cloudy, with a low around 3. Southwest wind around 6 mph.
Wednesday
Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 31. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Wednesday Night
Snow showers likely. Mostly cloudy, with a low around 19. Chance of precipitation is 70%.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 25. Chance of precipitation is 50%.
Thursday Night
Mostly cloudy, with a low around 5.
Friday
Mostly cloudy, with a high near 19.
Friday Night
A chance of snow showers. Mostly cloudy, with a low around 6. Chance of precipitation is 30%.
Saturday
A chance of snow showers. Partly sunny, with a high near 18. Chance of precipitation is 30%.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 1. Chance of precipitation is 40%.
Sunday
A chance of snow showers. Partly sunny, with a high near 12. Chance of precipitation is 40%.
Basemap Options
Click map to change the forecast location
Loading map...
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:
1:39 pm EST Jan 18, 2026
Forecast Valid:
5pm EST Jan 18, 2026-6pm EST Jan 25, 2026
 
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