Three Mile Island Weather Forecast

    • 35
    • 59

    Becoming Sunny

    • 41
    • 64

    Partly Sunny

    • 49
    • 60

    Slight Chance Rain Showers

    • 58
    • 80

    Partly Sunny

    • 62
    • 87

    Partly Sunny

    • 58
    • 83

    Chance Rain Showers

Today 25 Apr Dauphin

Areas of frost in the morning. Sunny. Highs in the upper 50s. Northeast Winds around 5 Mph.

Tonight 25 Apr Dauphin

Partly cloudy. Areas of frost. Much cooler with Lows in the mid 30s. North Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Three Mile Island Temperature Statistics

April Temperature

Harrisburg, Harrisburg International Airport (3.7 miles)

  • Lowest 8 April, 2024

    35.7 °F

  • Average April

    54.8 °F

  • Highest 14 April, 2024

    80.7 °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

    56.1 °F

  • Average High 2019–2024

    65.1 °F
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