National Weather Service forecast

St. Marys, Pennsylvania Weather

49°Overnight: Partly Cloudy
Wind SE 2 mph

St. Marys 7-Day Forecast

  1. Overnight
    49°F
    Partly Cloudy

    Partly cloudy, with a low around 49. Southeast wind around 2 mph.

  2. Wednesday
    73°F
    Patchy Fog then Partly Sunny
    2% chance of precipitation

    Patchy fog between 7am and 8am. Partly sunny, with a high near 73. Southeast wind 1 to 9 mph.

  3. Wednesday Night
    57°F
    Light Rain
    94% chance of precipitation

    Rain after 8pm. Cloudy, with a low around 57. South wind around 9 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

  4. Thursday
    68°F
    Light Rain Likely
    65% chance of precipitation

    Rain likely before 1pm. Partly sunny, with a high near 68. Southwest wind 7 to 12 mph, with gusts as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

  5. Thursday Night
    44°F
    Mostly Cloudy
    1% chance of precipitation

    Mostly cloudy, with a low around 44. Southwest wind 1 to 5 mph.

  6. Friday
    62°F
    Mostly Cloudy then Slight Chance Light Rain
    21% chance of precipitation

    A slight chance of rain after 1pm. Mostly cloudy, with a high near 62. Chance of precipitation is 20%.

  7. Friday Night
    39°F
    Chance Light Rain
    41% chance of precipitation

    A chance of rain. Mostly cloudy, with a low around 39. Chance of precipitation is 40%.

  8. Saturday
    52°F
    Chance Light Rain
    50% chance of precipitation

    A chance of rain. Mostly cloudy, with a high near 52. Chance of precipitation is 50%.

  9. Saturday Night
    32°F
    Chance Light Rain
    46% chance of precipitation

    A chance of rain. Mostly cloudy, with a low around 32. Chance of precipitation is 50%.

  10. Sunday
    52°F
    Slight Chance Light Rain then Partly Sunny
    15% chance of precipitation

    A slight chance of rain before 7am. Partly sunny, with a high near 52.

  11. Sunday Night
    30°F
    Partly Cloudy then Slight Chance Light Rain
    16% chance of precipitation

    A slight chance of rain after 1am. Partly cloudy, with a low around 30.

  12. Monday
    53°F
    Chance Light Rain
    25% chance of precipitation

    A chance of rain. Partly sunny, with a high near 53. Chance of precipitation is 30%.

  13. Monday Night
    30°F
    Slight Chance Light Rain then Partly Cloudy
    15% chance of precipitation

    A slight chance of rain before 7pm. Partly cloudy, with a low around 30.

  14. Tuesday
    57°F
    Mostly Sunny
    9% chance of precipitation

    Mostly sunny, with a high near 57.

Issued by the National Weather Service (CTP office), updated .

St. Marys Hourly Forecast

Loading the next 48 hours…

Full 100+ hour forecast for St. Marys

St. Marys Weather Radar

Open the full radar for St. Marys

About St. Marys

Population (2020 Census)
12,738
Coordinates
41.455, -78.520
Elevation
1,699 ft
NWS forecast office
CTP
Time zone
America/New York
Sunrise today
6:49 AM EST
Sunset today
5:06 PM EST
Daylight today
10 h 17 min

St. Marys Weather Questions

What is the weather forecast for St. Marys, Pennsylvania?

Overnight: Partly cloudy, with a low around 49. Southeast wind around 2 mph. Wednesday: Patchy fog between 7am and 8am. Partly sunny, with a high near 73. Southeast wind 1 to 9 mph.

Will it rain or snow in St. Marys this week?

The best chance of precipitation is Wednesday Night at 94%. Periods with a 30% chance or more: Wednesday Night (94%), Thursday (65%), Friday Night (41%), Saturday (50%), Saturday Night (46%).

How warm and how cold will it get in St. Marys this week?

The warmest day is Wednesday, with a high near 73°F. The coldest night is Sunday Night, with a low near 30°F.

What time are sunrise and sunset in St. Marys today?

Sunrise is at 6:49 AM EST and sunset is at 5:06 PM EST, for 10 h 17 min of daylight.

Weather near St. Marys

Largest cities in Pennsylvania

All Pennsylvania cities