Weather in Saint Marys, PA
Updated 2026-09-26 11:15 local time · ZIP codes 15857
Sunny
No government weather alerts were returned for this location at the latest update.
Next hours
57°4% rain
60°12% rain61°12% rain62°11% rain61°12% rain59°13% rain60°13% rain57°15% rain56°16% rain
56°16% rain57°16% rain57°17% rain3-day weather forecast
Weather details
Sunrise, sunset and moon
Key weather changes ahead
Weather insights for today
Rain chance stays relatively low over the next 12 hours (up to 17%).
It feels like 49°F with winds near 11 mph.
62°F, 11% rain chance and 12 mph wind.
Visibility is around 6 mi; gusts may reach 30 mph.
Current temperature is 57°F, wind 11 mph, rain chance up to 17%.
UV index is 3. Sunscreen and sunglasses are sensible for longer outdoor time.
Local weather characteristics in Saint Marys
Pennsylvania has four seasons and varied terrain. Western and northern areas are generally cooler and snowier, while southeastern areas are often milder.
Saint Marys is part of the Northeast weather region. The forecast point is near 41.43°N latitude and 78.56°W longitude. Local temperature, wind and precipitation can still differ from nearby places, especially where terrain, coastlines or urban development create small-scale weather changes.
Saint Marys weather today
Sunny and 57°F in Saint Marys, PA. Today's high is 62°F with a 14% rain chance. Winds are around 11 mph with gusts near 22 mph. Relative humidity is 60%, pressure is 30.08 inHg, and visibility is about 6 miles.
Tonight and tomorrow in Saint Marys
Sunrise is at 07:05 AM and sunset is at 07:05 PM. Tomorrow's forecast calls for Sunny with a high near 58°F and a low near 46°F. The maximum rain chance is 72%.