Grand Lake St. Marys SPB Weather Forecast

    • 37
    • 56

    Mostly Sunny

    • 48
    • 58

    Partly Sunny

    • 38
    • 65

    Mostly Sunny

    • 44
    • 55

    Mostly Cloudy

    • 45
    • 61

    Rain Likely

    • 40
    • 54

    Mostly Cloudy

Today 3 Nov Mercer

Mostly sunny. Highs in the upper 50s. West Winds 10 to 15 Mph with Gusts up to 25 Mph.

Tonight 3 Nov Mercer

Mostly clear. Near steady Temperatures in the upper 30s. Southwest Winds 5 to 10 Mph.

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Grand Lake St. Marys SPB Temperature Statistics

November Temperature

Versailles Darke County Airport (23 miles)

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Climate (2020–Present)

Versailles Darke County Airport (23 miles)

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  • Average Low 2020–2025

    43.4 °F

  • Average 2020–2025

    52.4 °F

  • Average High 2020–2025

    61.5 °F
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