Daily Forecast for St. Marys, Pennsylvania

Cloudy conditions with rain and snow showers expected throughout the week

Published on Mar. 4, 2026

The 10-day forecast for St. Marys, Pennsylvania calls for a mix of cloudy skies, rain showers, and snow showers over the next week and a half. Temperatures will range from the 20s to the 70s, with the potential for accumulating snow in the coming days.

Why it matters

This detailed weather forecast is important for residents of St. Marys and the surrounding region to plan their activities and prepare for the changing weather conditions in the coming days and weeks.

The details

The forecast calls for a mix of weather patterns, including morning fog, cloudy skies, rain showers, and even the potential for thunderstorms and snow showers at times. Precipitation chances range from 30% to 100%, with rainfall amounts ranging from a quarter inch to over an inch. Temperatures will fluctuate, with highs ranging from the 30s to the 70s and lows dipping into the 20s.

  • The rain and snow showers are expected to begin on Monday evening and continue through Tuesday.
  • Wednesday and Thursday will see a chance of rain showers, with thunderstorms possible on Wednesday.
  • Friday through Sunday will bring a mix of rain, snow, and wintry precipitation, with the potential for accumulating snow on Saturday night into Sunday.
  • The following week will see a continuation of unsettled weather, with snow showers and a wintry mix expected on Monday and Tuesday.
  • By the end of the 10-day forecast period, the weather is expected to be partly cloudy with highs in the 30s.

The players

The Weather Channel

A major U.S. media company that provides weather forecasts, news, and information across multiple platforms.

Weather.com

The official website of The Weather Channel, offering detailed weather forecasts, news, and data.

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The takeaway

Residents of St. Marys should be prepared for a variety of weather conditions over the next 10 days, including rain, snow, and the potential for wintry mixes. It's important to monitor the forecast and plan accordingly for any outdoor activities or travel during this period.