Grand Lake St. Marys SPB Weather Forecast

    • 13
    • 27

    Mostly Cloudy

    • 20
    • 30

    Partly Sunny

    • 30
    • 37

    Mostly Cloudy

    • 37
    • 45

    Mostly Cloudy

    • 33
    • 46

    Mostly Cloudy

    • 34
    • 47

    Chance Rain

Today 21 Feb Mercer

Cloudy late this Morning, then becoming partly sunny. A chance of Flurries. Cold with Highs in the upper 20s. West Winds around 5 Mph.

Tonight 21 Feb Mercer

Partly cloudy. Cold with Lows around 13. Southwest Winds around 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Lake St. Marys SPB Temperature Statistics

February Temperature

Versailles Darke County Airport (23 miles)

  • Lowest 17 February, 2025

    6.8 °F

  • Average February

    27.8 °F

  • Highest 3 February, 2025

    60.8 °F

Climate (2020–Present)

Versailles Darke County Airport (23 miles)

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  • Average Low 2020–2025

    43.2 °F

  • Average 2020–2025

    52.2 °F

  • Average High 2020–2025

    61.5 °F
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