Grand Lake St. Marys SPB Rainfall Forecast

  • 5%
  • No Rain
  • 25%
  • 80%
  • 20%
  • 5%
  • 15%
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  • Rainfall Probability Forecast NOAA

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Grand Lake St. Marys SPB Rainfall Statistics

January Rainfall

Versailles Darke County Airport (23 miles)

  • Total Rainfall January

    0.5in

  • Daily Average January

    0.03in

  • Wettest Day 9 January, 2026

    0.5in

  • Wet Days January

    1/22 (5%)

Climate (2010–Present)

Versailles Darke County Airport (23 miles)

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  • Annual Average 2021–2025

    21.2in

  • Monthly Average 2021–2025

    1.8in

  • Daily Average 2021–2026

    0.1in

  • Wettest Day 3 March, 2023

    2.9in
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