Petaluma River - Black John Slough Entrance Rainfall Forecast

  • 5%
  • 5%
  • 70%
  • 45%
  • 65%
  • 75%
  • 55%
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Petaluma River - Black John Slough Entrance Rainfall Statistics

December Rainfall

Novato / Gnoss Field (1.9 miles)

  • Total Rainfall December

    0.01in

  • Daily Average December

    0in

  • Wettest Day 5 December, 2025

    0.01in

  • Wet Days December

    1/14 (7%)

Climate (2010–Present)

Novato / Gnoss Field (1.9 miles)

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  • Annual Average 2020–2024

    9.8in

  • Monthly Average 2020–2025

    0.9in

  • Daily Average 2020–2025

    0.03in

  • Wettest Day 24 October, 2021

    4.7in
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