Grand Lake St. Marys SPB Weather Forecast

    • 59
    • 67

    Rain Showers Likely

    • 65
    • 77

    Chance Rain Showers

    • 64
    • 80

    Partly Sunny

    • 61
    • 77

    Rain Showers Likely

    • 58
    • 74

    Chance Rain Showers

    • 54
    • 75

    Chance Thunderstorms

Today 26 Apr Mercer

Areas of frost in the morning. Mostly sunny in the Morning, then partly cloudy with a chance of rain Showers in the afternoon. Highs in the upper 60s. Southeast Winds 10 to 15 Mph. Chance of rain 40 percent.

Tonight 26 Apr Mercer

Mostly cloudy. Showers likely with a slight chance of Thunderstorms in the Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Warmer with Lows in the upper 50s. Southeast Winds 10 to 15 Mph. Gusts up to 30 Mph after midnight. Chance of rain 70 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grand Lake St. Marys SPB Temperature Statistics

April Temperature

Versailles Darke County Airport (23 miles)

  • Lowest 6 April, 2024

    32 °F

  • Average April

    52.5 °F

  • Highest 16 April, 2024

    80.6 °F

Climate (2019–Present)

Versailles Darke County Airport (23 miles)

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  • Average Low 2019–2024

    43.2 °F

  • Average 2019–2024

    52.1 °F

  • Average High 2019–2024

    61.4 °F
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