Grand Lake Saint Marys State Park Weather Forecast

    • 50
    • 65

    Rain Showers

    • 45
    • 66

    Rain Showers

    • 55
    • 70

    Mostly Sunny

    • 57
    • 76

    Rain Showers Likely

    • 54
    • 69

    Rain Showers Likely

    • 55
    • 72

    Chance Rain Showers

Today 10 May Mercer

Mostly cloudy early this Morning, then clearing. Highs in the mid 60s. North Winds 10 to 15 Mph.

Tonight 10 May Mercer

Mostly clear in the Evening, then partly cloudy with a chance of Showers after midnight. Lows around 50. West Winds 5 to 10 Mph, becoming southwest after midnight. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Lake Saint Marys State Park Temperature Statistics

May Temperature

Versailles Darke County Airport (22.4 miles)

  • Lowest 1 May, 2024

    51.8 °F

  • Average May

    67 °F

  • Highest 2 May, 2024

    84.2 °F

Climate (2019–Present)

Versailles Darke County Airport (22.4 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2019–2024

    43.3 °F

  • Average 2019–2024

    52.2 °F

  • Average High 2019–2024

    61.5 °F
Get an account to remove ads