Eureka Weather Forecast

    • 40
    • 57

    Increasing Clouds

    • 41
    • 59

    Mostly Cloudy

    • 46
    • 61

    Mostly Cloudy

    • 48
    • 63

    Rain Showers Likely

    • 42
    • 58

    Chance Rain Showers

    • 43
    • 58

    Mostly Cloudy

    • 44
    • 62

    Mostly Cloudy

Today 21 Mar Northern Humboldt Coast

Mostly cloudy. Slight chance of drizzle in the morning. Highs 53 to 63. Northwest wind 5 to 15 Mph.

Tonight 21 Mar Northern Humboldt Coast

Partly cloudy until late tonight then becoming mostly cloudy. Lows 36 to 46. Northwest wind 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Eureka Temperature Statistics

March Temperature

Arcata / Eureka, Arcata Airport (11.8 miles)

  • Lowest 11 March, 2026

    35.7 °F

  • Average March

    50.7 °F

  • Highest 17 March, 2026

    65.6 °F

Climate (2021–Present)

Arcata / Eureka, Arcata Airport (11.8 miles)

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  • Average Low 2021–2026

    45.6 °F

  • Average 2021–2026

    52.3 °F

  • Average High 2021–2026

    59.5 °F
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