St Johns Weather Forecast

    • 68
    • 87

    Decreasing Clouds

    • 68
    • 88

    Rain Showers Likely

    • 66
    • 83

    Rain Showers

    • 63
    • 83

    Chance Thunderstorms

    • 64
    • 83

    Mostly Sunny

    • 67
    • 86

    Mostly Sunny

Today 8 Jul Mercer

Partly cloudy. Highs in the upper 80s. West Winds around 5 Mph.

Tonight 8 Jul Mercer

Partly cloudy. Lows in the upper 60s. West Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St Johns Temperature Statistics

July Temperature

Versailles Darke County Airport (14.3 miles)

  • Lowest 3 July, 2026

    69.8 °F

  • Average July

    78.9 °F

  • Highest 3 July, 2026

    93.2 °F

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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