Agate Harbor Weather Forecast

    • 51
    • 59

    Mostly Sunny

    • 52
    • 61

    Mostly Sunny

    • 54
    • 63

    Mostly Cloudy

    • 54
    • 64

    Partly Sunny

    • 54
    • 64

    Chance Rain Showers

    • 56
    • 64

    Mostly Cloudy

    • 56
    • 65

    Partly Sunny

Today 22 Sep Keweenaw

Mostly cloudy with a 40 percent chance of Showers. Lows around 53. Highs 61 to 66.

Tonight 22 Sep Keweenaw

Clear. Lows in the upper 40s. East Winds 5 to 10 Mph with Gusts up to 20 Mph, becoming southeast after midnight.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Agate Harbor Temperature Statistics

September Temperature

Copper Harbor (8.7 miles)

  • Lowest 20 September, 2026

    45 °F

  • Average September

    62.2 °F

  • Highest 1 September, 2026

    80.1 °F

Climate (2021–2026)

Copper Harbor (8.7 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    38.2 °F

  • Average 2021–2026

    44.4 °F

  • Average High 2021–2026

    50.5 °F
Get WillyWeather+ to remove ads