Winter Returns Across the Northern Tier; Record Warmth for the Southwest

A large high pressure system will usher in cold air for this first day of March across the northern Plains, Great Lakes, Northeast and mid-Atlantic. Some wintry precipitation may evolve across the mid-Mississippi Valley, Ohio Valley and mid-Atlantic through Monday. Meanwhile, record warmth will spread across the Southwest, southern Plains through early this week. Read More >

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 ESE Sinnamahoning PA

  • Today

    Today: Partly sunny, then gradually becoming sunny, with a high near 34. North wind 7 to 9 mph.

    High: 34 °F

    Becoming
    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 15. North wind 5 to 9 mph.

    Low: 15 °F

    Mostly Clear

  • Monday

    Monday: Partly sunny, then gradually becoming sunny, with a high near 35. Light and variable wind becoming south 5 to 7 mph in the afternoon.

    High: 35 °F

    Becoming
    Sunny

  • Monday Night

    Monday Night: A chance of snow and freezing rain after 1am.  Increasing clouds, with a low around 25. Southeast wind around 10 mph, with gusts as high as 20 mph.  Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 25 °F

    Mostly Clear
    then Chance
    Wintry Mix

  • Tuesday

    Tuesday: Snow and freezing rain likely before 10am, then rain or freezing rain likely between 10am and 1pm, then rain after 1pm.  High near 38. Southeast wind 7 to 9 mph.  Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 38 °F

    Wintry Mix

  • Tuesday Night

    Tuesday Night: Rain.  Low around 37. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 37 °F

    Rain

  • Wednesday

    Wednesday: A chance of showers.  Mostly cloudy, with a high near 50. Chance of precipitation is 50%.

    High: 50 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 1am.  Mostly cloudy, with a low around 43. Chance of precipitation is 70%.

    Low: 43 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely.  Mostly cloudy, with a high near 59. Chance of precipitation is 70%.

    High: 59 °F

    Showers
    Likely

Detailed Forecast

Today
Partly sunny, then gradually becoming sunny, with a high near 34. North wind 7 to 9 mph.
Tonight
Mostly clear, with a low around 15. North wind 5 to 9 mph.
Monday
Partly sunny, then gradually becoming sunny, with a high near 35. Light and variable wind becoming south 5 to 7 mph in the afternoon.
Monday Night
A chance of snow and freezing rain after 1am. Increasing clouds, with a low around 25. Southeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Tuesday
Snow and freezing rain likely before 10am, then rain or freezing rain likely between 10am and 1pm, then rain after 1pm. High near 38. Southeast wind 7 to 9 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Tuesday Night
Rain. Low around 37. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday
A chance of showers. Mostly cloudy, with a high near 50. Chance of precipitation is 50%.
Wednesday Night
Showers likely, mainly after 1am. Mostly cloudy, with a low around 43. Chance of precipitation is 70%.
Thursday
Showers likely. Mostly cloudy, with a high near 59. Chance of precipitation is 70%.
Thursday Night
Showers likely. Mostly cloudy, with a low around 47. Chance of precipitation is 70%.
Friday
A chance of showers. Mostly cloudy, with a high near 59. Chance of precipitation is 50%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 48. Chance of precipitation is 40%.
Saturday
A chance of showers. Partly sunny, with a high near 64. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
6 Miles ESE Sinnamahoning PA
 41.35°N 77.94°W (Elev. 1998 ft)
7:05 am EST Mar 1, 2026
9am EST Mar 1, 2026-6pm EST Mar 7, 2026
 
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Additional Resources

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