St Augustine Weather Forecast

    • 54
    • 75

    Rain Showers Likely

    • 61
    • 82

    Chance Thunderstorms

    • 61
    • 86

    Rain Showers

    • 67
    • 85

    Chance Thunderstorms

    • 64
    • 88

    Thunderstorms Likely

    • 56
    • 78

    Rain Showers Likely

Today 14 May Knox

Sunny. Highs in the mid 70s. South Winds 5 to 10 Mph.

Tonight 14 May Knox

Partly cloudy in the Evening, then becoming mostly cloudy. A slight chance of Thunderstorms. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Not as cool with Lows in the mid 50s. South Winds 10 to 15 Mph. Gusts up to 30 Mph after midnight. Chance of rain 50 percent.

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St Augustine Temperature Statistics

May Temperature

Galesburg Municipal Airport (14.3 miles)

  • Lowest 7 May, 2026

    32.7 °F

  • Average May

    54.5 °F

  • Highest 12 May, 2026

    81.3 °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

    62.3 °F
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