St Johns Weather Forecast

    • 63
    • 73

    Mostly Cloudy

    • 52
    • 78

    Rain Showers Likely

    • 48
    • 62

    Rain Showers Likely

    • 62
    • 78

    Rain Showers Likely

    • 60
    • 74

    Rain Showers Likely

    • 43
    • 77

    Chance Rain Showers

Today 30 Mar Mercer

Partly cloudy. Unseasonably warm with Highs in the lower 70s. Southwest Winds around 20 Mph with Gusts up to 30 Mph.

Tonight 30 Mar Mercer

Partly cloudy. Unseasonably warm with Lows in the lower 60s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph.

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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

    47.9 °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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