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Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

6 Miles SSE James City PA

Winter Storm Watch January 24, 10:00pm until January 26, 01:00pm
Cold Weather Advisory January 23, 01:00pm until January 24, 10:00am
Click here for hazard details and duration
Winter Storm Watch
Cold Weather Advisory

  • Overnight

    Overnight: Mostly cloudy, with a low around 8. Wind chill values as low as zero. West wind around 11 mph, with gusts as high as 26 mph.

    Low: 8 °F

    Mostly Cloudy

  • Friday

    Friday: Partly sunny, with a temperature falling to around 2 by 5pm. Wind chill values as low as -15. West wind 10 to 14 mph, with gusts as high as 29 mph.

    High: 12 °F⇓

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around -6. Wind chill values as low as -15. Northwest wind 3 to 8 mph. Winds could gust as high as 21 mph.

    Low: -6 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny and cold, with a high near 10. Wind chill values as low as -5. Calm wind.

    High: 10 °F

    Cold

  • Saturday Night

    Saturday Night: Snow likely, mainly after 1am. Mostly cloudy, with a low around 4. Calm wind becoming east 5 to 7 mph after midnight. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.

    Low: 4 °F

    Slight Chance
    Snow then
    Snow Likely

  • Sunday

    Sunday: Snow. The snow could be heavy at times. High near 16. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.

    High: 16 °F

    Heavy Snow

  • Sunday Night

    Sunday Night: Snow. Low around 11. Chance of precipitation is 100%.

    Low: 11 °F

    Snow

  • Monday

    Monday: A chance of snow before 1pm, then a chance of snow showers after 1pm. Mostly cloudy, with a high near 16. Chance of precipitation is 50%.

    High: 16 °F

    Chance Snow

  • Monday Night

    Monday Night: Mostly cloudy, with a low around -2.

    Low: -2 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 8. Wind chill values as low as zero. West wind around 11 mph, with gusts as high as 26 mph.
Friday
Partly sunny, with a temperature falling to around 2 by 5pm. Wind chill values as low as -15. West wind 10 to 14 mph, with gusts as high as 29 mph.
Friday Night
Partly cloudy, with a low around -6. Wind chill values as low as -15. Northwest wind 3 to 8 mph. Winds could gust as high as 21 mph.
Saturday
Partly sunny and cold, with a high near 10. Wind chill values as low as -5. Calm wind.
Saturday Night
Snow likely, mainly after 1am. Mostly cloudy, with a low around 4. Calm wind becoming east 5 to 7 mph after midnight. Chance of precipitation is 70%. New snow accumulation of 1 to 2 inches possible.
Sunday
Snow. The snow could be heavy at times. High near 16. Chance of precipitation is 100%. New snow accumulation of 5 to 9 inches possible.
Sunday Night
Snow. Low around 11. Chance of precipitation is 100%.
Monday
A chance of snow before 1pm, then a chance of snow showers after 1pm. Mostly cloudy, with a high near 16. Chance of precipitation is 50%.
Monday Night
Mostly cloudy, with a low around -2.
Tuesday
Mostly cloudy, with a high near 12.
Tuesday Night
Mostly cloudy, with a low around 2.
Wednesday
Mostly cloudy, with a high near 15.
Wednesday Night
Mostly cloudy, with a low around -2.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 13. 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:
2:51 am EST Jan 23, 2026
Forecast Valid:
3am EST Jan 23, 2026-6pm EST Jan 29, 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