St Johns Weather Forecast

    • 34
    • 79

    Rain Showers

    • 26
    • 45

    Mostly Cloudy

    • 33
    • 47

    Partly Sunny

    • 48
    • 56

    Mostly Cloudy

    • 56
    • 69

    Chance Rain Showers

    • 60
    • 77

    Chance Rain Showers

Today 26 Mar Mercer

Partly cloudy with a slight chance of Showers and Thunderstorms. Warmer with Highs in the upper 70s. Southwest Winds around 20 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

Tonight 26 Mar Mercer

Showers with a chance of Thunderstorms in the Evening, then Showers after midnight. Locally heavy rainfall possible in the evening. Much cooler with Lows in the mid 30s. Northwest Winds 15 to 20 Mph, becoming northeast after midnight. Chance of rain 100 percent.

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St Johns Temperature Statistics

March Temperature

Versailles Darke County Airport (14.3 miles)

  • Lowest 18 March, 2026

    19.4 °F

  • Average March

    48 °F

  • Highest 22 March, 2026

    84.2 °F

Climate (2021–Present)

Versailles Darke County Airport (14.3 miles)

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  • Average Low 2021–2026

    43.1 °F

  • Average 2021–2026

    52.4 °F

  • Average High 2021–2026

    61.6 °F
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