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Expect sunny, seasonable weather across much of Pennsylvania on Saturday, October 3, followed by more clouds and a chance of showers in southern Pennsylvania on Sunday, October 4. The National Weather Service says Saturday highs will mainly be in the 60s, with readings near 70 in the Lower Susquehanna Valley. Sunday’s rain risk varies by town, so check your local forecast before making outdoor plans.

Will it be sunny in Pennsylvania this weekend?

Saturday should be the sunnier day for much of the state. In its regional summary issued late Friday, October 2, the National Weather Service (NWS) in State College said showers behind a cold front would taper overnight, leaving cooler, drier air. Lingering clouds were possible in southern parts of Pennsylvania, but the broad forecast called for a sunnier, seasonable day, with highs mainly in the 60s and near 70 in the Lower Susquehanna Valley. Check the NWS State College forecast for updates.

Local forecasts illustrate why the statewide outlook should not be treated as a prediction for every town. The NWS’s October 2 tabular forecast put Saturday’s high at 67°F in Butler and 64°F in Erie; the Philadelphia point forecast, last updated October 2 at 4:10 p.m. EDT, called for a high near 73°F after clouds give way to sun. These are location-specific forecasts issued at different times, not a statewide temperature range.

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Will it rain in Pennsylvania on Sunday?

Showers are possible, but the NWS State College summary places the scattered-shower risk over southern Pennsylvania as a weak low-pressure system crosses the Mid-Atlantic. It does not describe the risk as statewide. In Philadelphia, the NWS point forecast calls for showers likely, mainly after 2 p.m., with a 60% precipitation chance and a high near 67°F. By comparison, the October 2 State College table forecasts Butler to be mostly cloudy with a 10% daytime precipitation probability and a high near 70°F. Erie is forecast sunny with a high near 68°F. Each figure applies to its named location and forecast, not to nearby towns generally. View the NWS Philadelphia forecast.

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If you have outdoor plans in southern Pennsylvania on Sunday, check the forecast for your town close to your departure time; carrying an umbrella is an optional precaution. Conditions and precipitation chances can change as the system approaches.

What to expect early next week

After Sunday’s system, the NWS expects seasonably cool, dry weather at the start of the workweek. Frost or freeze conditions are considered probable Monday and Tuesday nights, especially on the Allegheny Plateau and in the Laurels. This is a regional forecast, not a guarantee for every location. The NWS area forecast discussion also says little rain is expected during the first 10 days of October. Check the State College forecast discussion for the latest regional details.

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How to use this forecast

  • For Saturday plans, expect the best chance of sunshine across much of Pennsylvania, while allowing for lingering southern clouds.
  • For Sunday plans, look up the forecast for the specific town, especially in southern Pennsylvania, where showers are possible.
  • For overnight plans early next week, check local lows and frost or freeze alerts if you are in or near the Allegheny Plateau or Laurels.

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