Johnston Rainfall Forecast

  • 5%
  • 5%
  • No Rain
  • No Rain
  • 5%
  • 5%
  • 10%
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Johnston Rainfall Statistics

May Rainfall

Aiken Municipal Airport (14.3 miles)

  • Total Rainfall May

    2.7in

  • Daily Average May

    0.3in

  • Wettest Day 7 May, 2026

    1.6in

  • Wet Days May

    2/13 (15%)

Climate (2010–Present)

Aiken Municipal Airport (14.3 miles)

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  • Annual Average 2021–2025

    67.1in

  • Monthly Average 2021–2026

    5.8in

  • Daily Average 2021–2026

    0.2in

  • Wettest Day 6 November, 2024

    6.8in
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