Agate Harbor Weather Forecast

    • 36
    • 48

    Rain Showers

    • 39
    • 46

    Partly Sunny

    • 41
    • 53

    Partly Sunny

    • 41
    • 52

    Mostly Cloudy

    • 43
    • 54

    Mostly Cloudy

Today 19 May Keweenaw

Cloudy. A chance of rain Showers in the morning. Patchy fog in the morning. Highs in the lower 50s. Temperature falling into the middle 40s in the afternoon. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent.

Tonight 19 May Keweenaw

Partly cloudy. Areas of frost after midnight. Lows around 35. Northwest Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Agate Harbor Temperature Statistics

May Temperature

Copper Harbor (8.7 miles)

  • Lowest 8 May, 2026

    30 °F

  • Average May

    44 °F

  • Highest 15 May, 2026

    79 °F

Climate (2021–Present)

Copper Harbor (8.7 miles)

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  • Average Low 2021–2026

    38.4 °F

  • Average 2021–2026

    44.6 °F

  • Average High 2021–2026

    50.8 °F
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