National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Severe Thunderstorms, Heavy Rainfall and Dangerous Heat

Severe thunderstorms are expected today and Friday from the upper Midwest, central Great Lakes into the Ohio and mid-Mississippi Valley's. In addition, heavy rainfall threat increases on Friday across the Ohio Valley. Meanwhile, early summer-like heat wave across portions of southern Texas with new daily records are forecast today and through the weekend; The heat spreads across the Gulf States. Read More >

Hazardous Weather Conditions

Current conditions at

St Marys Municipal Airport (KOYM)

Lat: 41.41°NLon: 78.5°WElev: 1934ft.

Overcast

57°F

14°C

Humidity 94%
Wind Speed Calm
Barometer 29.86 in
Dewpoint 55°F (13°C)
Visibility 0.50 mi
Last update 16 May 12:55 am EDT
Extended Forecast for

2 Miles N Kersey PA

  • Overnight

    Overnight: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 5am. Low around 59. Light south wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Showers

  • Friday

    Friday: Showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 2pm. High near 80. South wind 6 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Showers then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms between 11pm and 2am, then showers and possibly a thunderstorm after 2am. Low around 60. Light and variable wind becoming south around 6 mph after midnight. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Chance
    T-storms then
    Showers

  • Saturday

    Saturday: Showers and possibly a thunderstorm. High near 73. Southwest wind 10 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Showers

  • Saturday Night

    Saturday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 50. West wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 50 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Sunday

    Sunday: A slight chance of showers after 8am. Mostly cloudy, with a high near 61. Chance of precipitation is 20%.

    High: 61 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 46.

    Low: 46 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 64.

    High: 64 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 39.

    Low: 39 °F

    Partly Cloudy

Detailed Forecast

Overnight
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 5am. Low around 59. Light south wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and thunderstorms before 1pm, then a slight chance of showers and thunderstorms after 2pm. High near 80. South wind 6 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms between 11pm and 2am, then showers and possibly a thunderstorm after 2am. Low around 60. Light and variable wind becoming south around 6 mph after midnight. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and possibly a thunderstorm. High near 73. Southwest wind 10 to 15 mph, with gusts as high as 29 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 50. West wind around 10 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Sunday
A slight chance of showers after 8am. Mostly cloudy, with a high near 61. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 46.
Monday
Mostly sunny, with a high near 64.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Partly sunny, with a high near 65.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 43. Chance of precipitation is 40%.
Wednesday
Showers likely. Mostly cloudy, with a high near 59. Chance of precipitation is 70%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 46. Chance of precipitation is 70%.
Thursday
Showers likely. Mostly cloudy, with a high near 57. Chance of precipitation is 70%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Kersey PA
 41.35°N 78.62°W (Elev. 1906 ft)
Last Update:
10:48 pm EDT May 15, 2025
Forecast Valid:
1am EDT May 16, 2025-6pm EDT May 22, 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