Grinnell Rainfall Forecast

  • 65%
  • 50%
  • 25%
  • 45%
  • 30%
  • 40%
  • 25%
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  • Rainfall Probability Forecast NOAA

  • Rain Today Real-Time

Grinnell Rainfall Statistics

September Rainfall

Newton Municipal Airport - Earl Johnson Field (15.5 miles)

  • Total Rainfall September

    0in

  • Daily Average September

    0in

  • Wettest Day 1 September, 2025

    0in

  • Wet Days September

    –

Climate (2010–Present)

Newton Municipal Airport - Earl Johnson Field (15.5 miles)

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  • Annual Average 2020–2024

    18.9in

  • Monthly Average 2020–2025

    1.5in

  • Daily Average 2020–2025

    0.05in

  • Wettest Day 1 June, 2023

    2.1in
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