St Johns Weather Forecast

    • 65
    • 76

    Chance Thunderstorms

    • 66
    • 82

    Chance Thunderstorms

    • 64
    • 80

    Rain Showers Likely

    • 58
    • 75

    Rain Showers Likely

    • 63
    • 81

    Mostly Cloudy

    • 42
    • 80

    Rain Showers Likely

    • 34
    • 54

    Partly Sunny

Today 13 Apr Mercer

Partly cloudy. Highs in the upper 70s. Southwest Winds around 15 Mph with Gusts up to 30 Mph.

Tonight 13 Apr Mercer

Partly Cloudy, then becoming mostly cloudy late this Evening, then becoming partly cloudy. A chance of Showers with a slight chance of Thunderstorms this evening. Unseasonably warm with Lows in the mid 60s. Southwest Winds 10 to 15 Mph. Gusts up to 30 Mph late. Chance of rain 30 percent.

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  • Temperature Forecast NOAA

  • 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

    53.1 °F

  • Highest 3 April, 2026

    78.8 °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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