Three Mile Island Weather Forecast

    • 61
    • 85

    Becoming Sunny

    • 63
    • 89

    Mostly Sunny

    • 68
    • 93

    Mostly Sunny

    • 70
    • 93

    Slight Chance Thunderstorms

    • 71
    • 88

    Rain Showers Likely

    • 71
    • 89

    Rain Showers Likely

    • 72
    • 94

    Chance Thunderstorms

Today 26 Jul Dauphin

Sunny. Near steady temperature in the lower 80s. North Winds around 5 Mph.

Tonight 26 Jul Dauphin

Mostly clear. Lows in the upper 50s. North Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Three Mile Island Temperature Statistics

July Temperature

Harrisburg, Harrisburg International Airport (3.7 miles)

  • Lowest 2 July, 2024

    60.7 °F

  • Average July

    81.1 °F

  • Highest 16 July, 2024

    100.7 °F

Climate (2019–Present)

Harrisburg, Harrisburg International Airport (3.7 miles)

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  • Average Low 2019–2024

    47.9 °F

  • Average 2019–2024

    56.3 °F

  • Average High 2019–2024

    65.3 °F
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