Union Grove State Park Rainfall Forecast

  • 55%
  • 90%
  • 80%
  • 60%
  • 25%
  • 5%
  • 30%
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  • Rainfall Probability Forecast NOAA

  • Rain Today Real-Time

Union Grove State Park Rainfall Statistics

September Rainfall

Marshalltown, Marshalltown Municipal Airport (9.9 miles)

  • Total Rainfall September

    2.3in

  • Daily Average September

    0.2in

  • Wettest Day 14 September, 2026

    0.6in

  • Wet Days September

    8/18 (44%)

Climate (2021–2025)

Marshalltown, Marshalltown Municipal Airport (9.9 miles)

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  • Annual Average 2021–2025

    26.6in

  • Monthly Average 2021–2026

    2.5in

  • Daily Average 2021–2026

    0.1in

  • Wettest Day 17 June, 2026

    3.4in
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