Pekin Weather Forecast

    • 65
    • 80

    Chance Thunderstorms

    • 61
    • 79

    Partly Sunny

    • 63
    • 80

    Slight Chance Thunderstorms

    • 65
    • 82

    Chance Thunderstorms

    • 61
    • 80

    Mostly Sunny

    • 63
    • 78

    Slight Chance Rain Showers

Today 18 Aug Jefferson

Cloudy this Morning, then becoming partly sunny. A chance of Showers. A chance of Thunderstorms this afternoon. Highs around 80. Southwest Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 18 Aug Jefferson

Mostly cloudy with a chance of Showers. A chance of Thunderstorms, mainly in the evening. Humid with Lows in the mid 60s. West Winds around 5 Mph, becoming north after midnight. Chance of rain 50 percent.

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Pekin Temperature Statistics

August Temperature

Fairfield Municipal Airport (11.8 miles)

  • Lowest 3 August, 2026

    60.8 °F

  • Average August

    75 °F

  • Highest 11 August, 2026

    91.4 °F

Climate (2021–2026)

Fairfield Municipal Airport (11.8 miles)

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  • Average Low 2021–2026

    41.4 °F

  • Average 2021–2026

    51.7 °F

  • Average High 2021–2026

    62 °F
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