Rock Harbor Weather Forecast

    • 35
    • 42

    Becoming Sunny

    • 33
    • 44

    Mostly Sunny

    • 36
    • 42

    Slight Chance Rain Showers

    • 38
    • 46

    Rain Showers Likely

    • 34
    • 44

    Slight Chance Rain Showers

    • 33
    • 42

    Mostly Cloudy

Today 20 Apr Keweenaw

Warmer. A slight chance of snow Showers in the afternoon. Mostly cloudy. Highs around 43. Southwest Winds 5 to 15 Mph, becoming south in the afternoon. Chance of snow 20 percent.

Tonight 20 Apr Keweenaw

Mostly cloudy in the Evening, then clearing. Lows around 35. Southwest Winds 5 to 15 Mph, becoming west after midnight. Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Rock Harbor Temperature Statistics

April Temperature

Copper Harbor (54.1 miles)

  • Lowest 7 April, 2026

    16 °F

  • Average April

    34.5 °F

  • Highest 17 April, 2026

    57.9 °F

Climate (2021–Present)

Copper Harbor (54.1 miles)

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  • Average Low 2021–2026

    38.5 °F

  • Average 2021–2026

    44.6 °F

  • Average High 2021–2026

    50.8 °F
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