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.

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

  • Today

    Today: Showers and thunderstorms before 3pm, then showers and possibly a thunderstorm, mainly after 3pm. Some of the storms could be severe. High near 67. South wind 6 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 67 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Rain showers before 2am, then a chance of rain and snow showers between 2am and 3am, then a chance of snow showers after 3am. Some thunder is also possible. Low around 27. Southwest wind around 14 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 27 °F

    Severe
    Thunderstorms
    then Chance
    Rain/Snow

  • Thursday

    Thursday: Partly sunny, with a high near 35. West wind around 14 mph, with gusts as high as 32 mph.

    High: 35 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 26. West wind 3 to 6 mph.

    Low: 26 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow before 11am, then a chance of rain and snow between 11am and 5pm, then a chance of rain after 5pm. Mostly cloudy, with a high near 45. Breezy, with a south wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 45 °F

    Chance
    Rain/Snow and
    Breezy

  • Friday Night

    Friday Night: A chance of rain and snow before 11pm, then a chance of snow between 11pm and 2am. Mostly cloudy, with a low around 24. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 24 °F

    Chance
    Rain/Snow
    then Chance
    Snow

  • Saturday

    Saturday: Partly sunny, with a high near 38.

    High: 38 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of snow showers after 2am. Mostly cloudy, with a low around 26. Chance of precipitation is 40%.

    Low: 26 °F

    Mostly Cloudy
    then Chance
    Snow Showers

  • Sunday

    Sunday: A chance of snow showers before 2pm, then a chance of rain showers. Mostly cloudy, with a high near 52. Chance of precipitation is 40%.

    High: 52 °F

    Chance Snow
    Showers then
    Chance
    Rain/Snow

Detailed Forecast

Today
Showers and thunderstorms before 3pm, then showers and possibly a thunderstorm, mainly after 3pm. Some of the storms could be severe. High near 67. South wind 6 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Tonight
Rain showers before 2am, then a chance of rain and snow showers between 2am and 3am, then a chance of snow showers after 3am. Some thunder is also possible. Low around 27. Southwest wind around 14 mph, with gusts as high as 33 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Thursday
Partly sunny, with a high near 35. West wind around 14 mph, with gusts as high as 32 mph.
Thursday Night
Partly cloudy, with a low around 26. West wind 3 to 6 mph.
Friday
A chance of snow before 11am, then a chance of rain and snow between 11am and 5pm, then a chance of rain after 5pm. Mostly cloudy, with a high near 45. Breezy, with a south wind 9 to 14 mph increasing to 15 to 20 mph in the afternoon. Winds could gust as high as 38 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Friday Night
A chance of rain and snow before 11pm, then a chance of snow between 11pm and 2am. Mostly cloudy, with a low around 24. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Partly sunny, with a high near 38.
Saturday Night
A chance of snow showers after 2am. Mostly cloudy, with a low around 26. Chance of precipitation is 40%.
Sunday
A chance of snow showers before 2pm, then a chance of rain showers. Mostly cloudy, with a high near 52. Chance of precipitation is 40%.
Sunday Night
Showers, mainly after 2am. Low around 31. Chance of precipitation is 80%.
Monday
Rain and snow showers. High near 43. Chance of precipitation is 80%.
Monday Night
A chance of snow showers. Mostly cloudy, with a low around 15. Chance of precipitation is 30%.
Tuesday
A chance of snow showers. Mostly cloudy, with a high near 25. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles SSE James City PA
 41.54°N 78.79°W (Elev. 1699 ft)
Last Update:
4:11 am EDT Mar 11, 2026
Forecast Valid:
4am EDT Mar 11, 2026-6pm EDT Mar 17, 2026
 
Forecast Discussion
 
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Additional Resources

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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