St Johns Weather Forecast

    • 26
    • 44

    Decreasing Clouds

    • 33
    • 46

    Mostly Sunny

    • 50
    • 59

    Mostly Cloudy

    • 61
    • 70

    Chance Rain Showers

    • 48
    • 76

    Chance Thunderstorms

    • 36
    • 57

    Chance Rain Showers

    • 43
    • 50

    Chance Rain Showers

Today 27 Mar Mercer

Partly cloudy and much cooler. Near steady Temperatures around 40. North Winds around 10 Mph.

Tonight 27 Mar Mercer

Partly Cloudy, then becoming mostly clear this late evening and early Morning, then becoming partly cloudy. Lows in the mid 20s. Northwest Winds 10 to 15 Mph, Diminishing to 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

    48.1 °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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