St Johns Weather Forecast

    • 71
    • 91

    Slight Chance Thunderstorms

    • 69
    • 89

    Chance Thunderstorms

    • 62
    • 83

    Chance Thunderstorms

    • 59
    • 81

    Partly Sunny

    • 61
    • 82

    Partly Sunny

    • 65
    • 83

    Partly Sunny

Today 3 Sep Mercer

Mostly sunny. A chance of Showers with a slight chance of Thunderstorms in the afternoon. Hot with Highs in the lower 90s. Southwest Winds 5 to 10 Mph. Chance of rain 40 percent. Heat index Values up to 102.

Tonight 3 Sep Mercer

Partly cloudy with a chance of Showers and Thunderstorms. Muggy and Unseasonably warm. Lows in the lower 70s. Southwest Winds around 5 Mph. Chance of rain 40 percent.

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St Johns Temperature Statistics

September Temperature

Versailles Darke County Airport (14.3 miles)

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Climate (2021–2026)

Versailles Darke County Airport (14.3 miles)

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  • Average Low 2021–2026

    43.3 °F

  • Average 2021–2026

    52.5 °F

  • Average High 2021–2026

    61.7 °F
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