St Augustine Weather Forecast

    • 56
    • 88

    Rain Showers

    • 60
    • 81

    Sunny

    • 61
    • 85

    Rain Showers

    • 53
    • 74

    Mostly Sunny

    • 54
    • 77

    Mostly Sunny

    • 55
    • 78

    Slight Chance Thunderstorms

Today 11 Jun Knox

A chance of Showers and Thunderstorms late this Morning, then Showers with Thunderstorms likely this afternoon. Breezy with Highs in the upper 80s. South Winds 10 to 15 Mph with Gusts up to 25 Mph, increasing to 20 to 25 Mph with Gusts up to 40 Mph this afternoon. Chance of rain near 100 percent.

Tonight 11 Jun Knox

Showers with Thunderstorms likely in the Evening, then mostly clear after midnight. Locally heavy rainfall possible in the evening. Breezy and less humid with Lows in the upper 50s. West Winds 20 to 25 Mph with Gusts up to 35 Mph, Diminishing to 5 to 10 Mph with Gusts up to 20 Mph after midnight. Chance of rain near 100 percent.

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St Augustine Temperature Statistics

June Temperature

Galesburg Municipal Airport (14.3 miles)

  • Lowest 2 June, 2026

    46.4 °F

  • Average June

    73.6 °F

  • Highest 6 June, 2026

    90.3 °F

Climate (2021–Present)

Galesburg Municipal Airport (14.3 miles)

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  • Average Low 2021–2026

    41.7 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    62.4 °F
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