Grand Lake St. Marys SPB Weather Forecast

    • 40
    • 45

    Rain Showers

    • 32
    • 57

    Rain Showers Likely

    • 34
    • 51

    Partly Sunny

    • 33
    • 47

    Chance Rain Showers

    • 30
    • 48

    Partly Sunny

    • 36
    • 50

    Partly Sunny

Today 24 Mar Mercer

Cloudy. Showers Likely, mainly in the morning. Cooler with Highs in the mid 40s. East Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 70 percent.

Tonight 24 Mar Mercer

Showers in the Evening, then Showers with a slight chance of Thunderstorms after midnight. Lows in the upper 30s. Temperatures rising into the mid 40s after midnight. East Winds 15 to 20 Mph. Gusts up to 35 Mph after midnight. Chance of rain 100 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Lake St. Marys SPB Temperature Statistics

March Temperature

Versailles Darke County Airport (23 miles)

  • Lowest 19 March, 2023

    15.8 °F

  • Average March

    36.9 °F

  • Highest 1 March, 2023

    71.6 °F

Climate (2010–Present)

Versailles Darke County Airport (23 miles)

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  • Average Low 2010–Present

    41.8 °F

  • Average 2010–Present

    50.5 °F

  • Average High 2010–Present

    59.6 °F
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