Big Flat Weather Forecast

    • 55
    • 59

    Partly Sunny

    • 56
    • 63

    Partly Sunny

    • 55
    • 60

    Partly Sunny

    • 54
    • 57

    Slight Chance Rain

    • 55
    • 62

    Mostly Sunny

    • 54
    • 63

    Mostly Sunny

Today 10 May Southwestern Humboldt

Mostly cloudy. Highs 62 to 77. North wind 10 to 20 Mph.

Tonight 10 May Southwestern Humboldt

Mostly cloudy in the evening then becoming partly cloudy. Lows 45 to 55. North wind 10 to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Big Flat Temperature Statistics

May Temperature

Fortuna Rohnerville Airport (29.2 miles)

  • Lowest 8 May, 2026

    46.4 °F

  • Average May

    51.9 °F

  • Highest 5 May, 2026

    60.8 °F

Climate (2021–Present)

Fortuna Rohnerville Airport (29.2 miles)

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  • Average Low 2021–2026

    45.3 °F

  • Average 2021–2026

    51.4 °F

  • Average High 2021–2026

    59.7 °F
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