Mechanicsburg Weather Forecast

    • 68
    • 86

    Rain Showers Likely

    • 55
    • 80

    Partly Sunny

    • 63
    • 76

    Rain Showers

    • 60
    • 79

    Rain Showers

    • 57
    • 71

    Chance Rain Showers

    • 55
    • 68

    Chance Rain Showers

Today 17 Sep Cumberland

Mostly cloudy. A chance of Showers this Morning, then Showers likely with a chance of Thunderstorms this afternoon. Very warm with Highs in the mid 80s. Southwest Winds around 5 Mph. Chance of rain 70 percent.

Tonight 17 Sep Cumberland

Mostly cloudy. Showers likely with a chance of Thunderstorms in the Evening, then a slight chance of Showers after midnight. Humid with Lows in the upper 60s. Southwest Winds around 5 Mph, becoming northwest after midnight. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mechanicsburg Temperature Statistics

September Temperature

Harrisburg, Capital City Airport (8.1 miles)

  • Lowest 15 September, 2026

    48.9 °F

  • Average September

    72.7 °F

  • Highest 1 September, 2026

    91.9 °F

Climate (2021–2026)

Harrisburg, Capital City Airport (8.1 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    56.9 °F

  • Average High 2021–2026

    66.2 °F
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