Fern Forest Weather Forecast

    • 66
    • 73

    Rain Showers

    • 66
    • 73

    Rain Showers

    • 65
    • 72

    Rain Showers

    • 64
    • 72

    Rain Showers

    • 64
    • 73

    Rain Showers

    • 65
    • 73

    Rain Showers

Today 29 Sep Big Island East

Partly sunny. Isolated Showers in the afternoon. Highs around 84 near the shore to around 70 at 4000 feet. South Winds up to 10 Mph shifting to the southeast in the afternoon. Chance of rain 20 percent.

Tonight 29 Sep Big Island East

Mostly cloudy in the evening then becoming partly cloudy. Isolated Showers. Lows 68 to 74 near the shore to around 60 at 4000 feet. South Winds up to 15 Mph. Chance of rain 20 percent.

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Fern Forest Temperature Statistics

September Temperature

Hilo, Hilo International Airport (18 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 (18 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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