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.

Partly Cloudy

90°F

32°C

Humidity 36%
Wind Speed W 8 mph
Barometer 30.05 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 12 Aug 5:55 pm EDT
Extended Forecast for

2 Miles ENE Brockport PA

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 7pm. Patchy fog between 4am and 5am. Otherwise, partly cloudy, with a low around 66. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 66 °F

    Slight Chance
    T-storms then
    Patchy Fog

  • Wednesday

    Wednesday: Showers and thunderstorms likely, mainly after 5pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 83. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 83 °F

    Chance
    T-storms and
    Patchy Fog
    then T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms before 5am, then a slight chance of showers. Low around 63. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 63 °F

    T-storms then
    Chance
    T-storms

  • Thursday

    Thursday: A slight chance of showers, then a chance of showers and thunderstorms after 8am. Partly sunny, with a high near 84. Calm wind becoming northwest around 6 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 7pm. Patchy fog between 4am and 5am. Otherwise, partly cloudy, with a low around 66. Southwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Wednesday
Showers and thunderstorms likely, mainly after 5pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 83. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers and thunderstorms before 5am, then a slight chance of showers. Low around 63. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A slight chance of showers, then a chance of showers and thunderstorms after 8am. Partly sunny, with a high near 84. Calm wind becoming northwest around 6 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Mostly clear, with a low around 58. Calm wind.
Friday
Sunny, with a high near 87.
Friday Night
Mostly clear, with a low around 60.
Saturday
Sunny, with a high near 88.
Saturday Night
Mostly clear, with a low around 62.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Tuesday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Brockport PA
 41.29°N 78.69°W (Elev. 1585 ft)
Last Update:
3:15 pm EDT Aug 12, 2025
Forecast Valid:
6pm EDT Aug 12, 2025-6pm EDT Aug 19, 2025
 
Forecast Discussion
 
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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