Keaau Weather Forecast

    • 72
    • 82

    Rain Showers

    • 73
    • 81

    Rain Showers

    • 73
    • 78

    Isolated Thunderstorms

    • 72
    • 78

    Isolated Thunderstorms

    • 71
    • 78

    Rain Showers

    • 70
    • 78

    Rain Showers

    • 70
    • 78

    Rain Showers

Today 21 Sep Big Island East

Mostly cloudy with numerous Showers. Highs around 84 near the shore to 68 to 74 at 4000 feet. North Winds up to 15 Mph. Chance of rain 70 percent.

Tonight 21 Sep Big Island East

Cloudy with occasional Showers. Lows 69 to 75 near the shore to around 62 at 4000 feet. Northeast Winds up to 15 Mph. Chance of rain 90 percent.

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Keaau Temperature Statistics

September Temperature

Hilo, Hilo International Airport (6.8 miles)

  • Lowest 14 September, 2026

    68 °F

  • Average September

    77.3 °F

  • Highest 8 September, 2026

    89.1 °F

Climate (2021–2026)

Hilo, Hilo International Airport (6.8 miles)

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  • Average Low 2021–2026

    68.2 °F

  • Average 2021–2026

    74.4 °F

  • Average High 2021–2026

    82.1 °F
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