Philadelphia Weather Forecast

    • 44
    • 61

    Chance Rain Showers

    • 41
    • 57

    Mostly Cloudy

    • 42
    • 62

    Partly Sunny

    • 43
    • 66

    Partly Sunny

    • 43
    • 66

    Partly Sunny

    • 45
    • 66

    Partly Sunny

Today 20 Sep Jefferson

Mostly cloudy. Showers likely late this Morning, then a chance of Showers early this afternoon. Highs Ranging from the upper 50s on the tug hill to the lower 60s across the lower Elevations. Light Winds, becoming northeast 5 to 10 Mph. Chance of rain 70 percent.

Tonight 20 Sep Jefferson

Mostly cloudy and breezy. Lows Ranging from the lower 40s across the tug hill to the upper 40s along the lake Ontario shore. Light Winds, becoming north 5 to 10 Mph.

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Philadelphia Temperature Statistics

September Temperature

Fort Drum / Wheeler-Sack U. S. Army Airfield (6.8 miles)

  • Lowest 11 September, 2026

    48.2 °F

  • Average September

    65.8 °F

  • Highest 2 September, 2026

    82.2 °F

Climate (2021–2026)

Fort Drum / Wheeler-Sack U. S. Army Airfield (6.8 miles)

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  • Average Low 2021–2026

    39.3 °F

  • Average 2021–2026

    47.8 °F

  • Average High 2021–2026

    55.9 °F
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