Eureka Weather Forecast

    • 64
    • 91

    Sunny

    • 38
    • 90

    Partly Sunny

    • 40
    • 58

    Mostly Cloudy

    • 46
    • 63

    Slight Chance Thunderstorms

    • 56
    • 76

    Partly Sunny

    • 45
    • 86

    Chance Rain Showers

    • 37
    • 58

    Slight Chance Rain Showers

Today 21 Mar St. Louis

Sunny. Highs in the upper 80s. South Winds 5 to 10 Mph.

Tonight 21 Mar St. Louis

Clear. Not as cool with Lows in the lower 60s. South Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Eureka Temperature Statistics

March Temperature

St. Louis, Spirit Of St. Louis Airport (10.6 miles)

  • Lowest 17 March, 2026

    16.6 °F

  • Average March

    50 °F

  • Highest 10 March, 2026

    86.6 °F

Climate (2021–Present)

St. Louis, Spirit Of St. Louis Airport (10.6 miles)

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  • Average Low 2021–2026

    45.9 °F

  • Average 2021–2026

    57.2 °F

  • Average High 2021–2026

    68.6 °F
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