Mastodon State Park Rainfall Forecast

  • No Rain
  • No Rain
  • No Rain
  • 5%
  • 5%
  • 15%
  • 10%
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Mastodon State Park Rainfall Statistics

September Rainfall

St. Louis Downtown Airport (18.6 miles)

  • Total Rainfall September

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  • Daily Average September

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  • Wettest Day 1 September, 2026

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  • Wet Days September

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Climate (2021–2025)

St. Louis Downtown Airport (18.6 miles)

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  • Annual Average 2021–2025

    43.5in

  • Monthly Average 2021–2026

    3.6in

  • Daily Average 2021–2026

    0.1in

  • Wettest Day 26 July, 2022

    7.2in
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