St Johns Weather Forecast

    • 29
    • 43

    Mostly Sunny

    • 35
    • 56

    Mostly Sunny

    • 24
    • 49

    Chance Rain/Snow

    • 19
    • 36

    Chance Snow

    • 17
    • 33

    Chance Snow

    • 28
    • 40

    Chance Rain

Today 26 Feb Mercer

Mostly sunny. Highs in the lower 40s. Southeast Winds around 5 Mph, becoming west in the afternoon.

Tonight 26 Feb Mercer

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 20s. Southwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

St Johns Temperature Statistics

February Temperature

Versailles Darke County Airport (14.3 miles)

  • Lowest 5 February, 2026

    -5.8 °F

  • Average February

    29.3 °F

  • Highest 18 February, 2026

    66.2 °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

    52.3 °F

  • Average High 2021–2026

    61.5 °F
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