St Johns Weather Forecast

    • 42
    • 71

    Mostly Cloudy

    • 52
    • 65

    Partly Sunny

    • 36
    • 79

    Chance Thunderstorms

    • 28
    • 48

    Partly Sunny

    • 35
    • 55

    Mostly Cloudy

    • 42
    • 55

    Partly Sunny

Today 20 Mar Mercer

Mostly cloudy until late Afternoon, then becoming partly cloudy. Unseasonably warm with Highs in the lower 70s. Southwest Winds 15 to 20 Mph, becoming west late.

Tonight 20 Mar Mercer

Partly cloudy in the Evening, then becoming mostly cloudy. Lows in the lower 40s. Northwest Winds 10 to 15 Mph with Gusts up to 25 Mph, becoming north around 5 Mph after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St Johns Temperature Statistics

March Temperature

Versailles Darke County Airport (14.3 miles)

  • Lowest 18 March, 2026

    19.4 °F

  • Average March

    47 °F

  • Highest 6 March, 2026

    75.2 °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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