Mechanicsburg Weather Forecast

    • 70
    • 92

    Slight Chance Thunderstorms

    • 69
    • 89

    Chance Thunderstorms

    • 60
    • 83

    Chance Thunderstorms

    • 58
    • 80

    Mostly Sunny

    • 62
    • 82

    Partly Sunny

    • 66
    • 85

    Partly Sunny

Today 3 Sep Champaign

Mostly sunny. Hot with Highs in the lower 90s. West Winds 5 to 10 Mph. Heat index Values up to 101.

Tonight 3 Sep Champaign

Mostly clear. Muggy and Unseasonably warm. Lows around 70. Southwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Mechanicsburg Temperature Statistics

September Temperature

London Madison County Airport (10.6 miles)

  • Lowest 1 September, 2026

    69.8 °F

  • Average September

    79.3 °F

  • Highest 1 September, 2026

    91.4 °F

Climate (2021–2026)

London Madison County Airport (10.6 miles)

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  • Average Low 2021–2026

    42.7 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    62.6 °F
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