St Johns Weather Forecast

    • 32
    • 42

    Mostly Cloudy

    • 29
    • 39

    Rain/Snow

    • 30
    • 39

    Flurries

    • 39
    • 48

    Partly Sunny

    • 46
    • 54

    Mostly Cloudy

    • 35
    • 55

    Rain/Snow Likely

Today 4 Dec Mercer

Mostly cloudy. Highs in the lower 40s. West Winds 5 to 10 Mph.

Tonight 4 Dec Mercer

Mostly cloudy. Lows in the lower 30s. West Winds 5 to 10 Mph, becoming southwest after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St Johns Temperature Statistics

December Temperature

Versailles Darke County Airport (14.3 miles)

  • Lowest 1 December, 2023

    41 °F

  • Average December

    44.1 °F

  • Highest 1 December, 2023

    48.2 °F

Climate (2018–Present)

Versailles Darke County Airport (14.3 miles)

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  • Average Low 2018–2023

    43.1 °F

  • Average 2018–2023

    52.1 °F

  • Average High 2018–2023

    61.4 °F
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