Eureka Weather Forecast

    • 66
    • 85

    Increasing Clouds

    • 64
    • 84

    Thunderstorms

    • 59
    • 77

    Partly Sunny

    • 61
    • 80

    Partly Sunny

    • 61
    • 83

    Partly Sunny

    • 61
    • 82

    Chance Rain Showers

    • 65
    • 83

    Chance Thunderstorms

Today 20 Jun St. Louis

Sunny. Near steady temperature in the lower 80s. Northwest Winds around 5 Mph.

Tonight 20 Jun St. Louis

Mostly clear this Evening, then becoming mostly cloudy. Lows in the upper 60s. Northeast Winds around 5 Mph, becoming east after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Eureka Temperature Statistics

June Temperature

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

  • Lowest 3 June, 2026

    52.6 °F

  • Average June

    74.8 °F

  • Highest 9 June, 2026

    93.7 °F

Climate (2021–2026)

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

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    57.4 °F

  • Average High 2021–2026

    68.8 °F
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