Lewistown Rainfall Forecast

  • 30%
  • 15%
  • No Rain
  • 60%
  • 85%
  • 30%
  • 5%
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  • Rainfall Probability Forecast NOAA

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Lewistown Rainfall Statistics

September Rainfall

Lewistown, Lewistown Municipal Airport (1.2 miles)

  • Total Rainfall September

    0.4in

  • Daily Average September

    0.04in

  • Wettest Day 7 September, 2026

    0.3in

  • Wet Days September

    2/15 (13%)

Climate (2021–2025)

Lewistown, Lewistown Municipal Airport (1.2 miles)

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  • Annual Average 2021–2025

    16.7in

  • Monthly Average 2021–2026

    1.5in

  • Daily Average 2021–2026

    0.05in

  • Wettest Day 18 September, 2024

    4.4in
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