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.

Overcast

66°F

19°C

Humidity 94%
Wind Speed Calm
Barometer 30.10 in
Dewpoint 64°F (18°C)
Visibility 7.00 mi
Last update 28 Jun 5:15 am EDT
Extended Forecast for

5 Miles NE Saint Marys PA

  • Overnight

    Overnight: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind around 5 mph. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    T-storms

  • Saturday

    Saturday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. Southwest wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Chance
    T-storms then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Patchy dense fog after midnight. Otherwise, partly cloudy, with a low around 58. Light west wind.

    Low: 58 °F

    Partly Cloudy
    then Patchy
    Dense Fog

  • Sunday

    Sunday: Patchy dense fog before 8am. Otherwise, sunny, with a high near 84. Light west wind.

    High: 84 °F

    Patchy Dense
    Fog then
    Sunny

  • Sunday Night

    Sunday Night: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear
    then Patchy
    Fog

  • Monday

    Monday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 85. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Chance
    Showers and
    Patchy Fog
    then Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 66. Chance of precipitation is 80%.

    Low: 66 °F

    Showers

  • Tuesday

    Tuesday: Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 60%.

    High: 80 °F

    Showers
    Likely then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of thunderstorms before 8pm. Mostly clear, with a low around 59. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    T-storms then
    Mostly Clear

Detailed Forecast

Overnight
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 65. South wind around 5 mph. Chance of precipitation is 20%.
Saturday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 82. Southwest wind 6 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Patchy dense fog after midnight. Otherwise, partly cloudy, with a low around 58. Light west wind.
Sunday
Patchy dense fog before 8am. Otherwise, sunny, with a high near 84. Light west wind.
Sunday Night
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 62. Calm wind.
Monday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 85. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and possibly a thunderstorm. Low around 66. Chance of precipitation is 80%.
Tuesday
Showers likely, with thunderstorms also possible after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 60%.
Tuesday Night
A chance of thunderstorms before 8pm. Mostly clear, with a low around 59. Chance of precipitation is 30%.
Wednesday
Sunny, with a high near 81.
Wednesday Night
Partly cloudy, with a low around 60.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 57. Chance of precipitation is 30%.
Independence Day
Mostly sunny, with a high near 78.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles NE Saint Marys PA
 41.47°N 78.48°W (Elev. 1621 ft)
Last Update:
4:04 am EDT Jun 28, 2025
Forecast Valid:
5am EDT Jun 28, 2025-6pm EDT Jul 4, 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