St Johns Weather Forecast

    • 54
    • 74

    Rain Showers Likely

    • 62
    • 78

    Rain Showers Likely

    • 38
    • 72

    Rain Showers Likely

    • 32
    • 52

    Partly Sunny

    • 43
    • 57

    Partly Sunny

Today 16 Apr Mercer

Mostly cloudy. Showers likely with a chance of Thunderstorms in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs in the mid 70s. Southwest Winds 15 to 20 Mph. Chance of rain 70 percent.

Tonight 16 Apr Mercer

Partly cloudy with Showers likely with a chance of Thunderstorms in the Evening, then mostly clear after midnight. Lows in the mid 50s. West Winds 10 to 15 Mph with Gusts up to 25 Mph, Diminishing to around 5 Mph after midnight. Chance of rain 60 percent.

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  • Temperature Real-Time

St Johns Temperature Statistics

April Temperature

Versailles Darke County Airport (14.3 miles)

  • Lowest 7 April, 2026

    28.4 °F

  • Average April

    55.5 °F

  • Highest 13 April, 2026

    80.6 °F

Climate (2021–Present)

Versailles Darke County Airport (14.3 miles)

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  • Average Low 2021–2026

    43.2 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    61.6 °F
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