Janesville Rainfall Forecast

  • 5%
  • No Rain
  • 30%
  • 45%
  • 10%
  • 5%
  • No Rain
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  • Rainfall Probability Forecast NOAA

  • Rain Today Real-Time

Janesville Rainfall Statistics

January Rainfall

Waterloo, Waterloo Municipal Airport (6.8 miles)

  • Total Rainfall January

    1.3in

  • Daily Average January

    0.1in

  • Wettest Day 8 January, 2026

    1.3in

  • Wet Days January

    3/13 (23%)

Climate (2010–Present)

Waterloo, Waterloo Municipal Airport (6.8 miles)

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  • Annual Average 2021–2025

    31.4in

  • Monthly Average 2021–2025

    2.6in

  • Daily Average 2021–2026

    0.1in

  • Wettest Day 21 May, 2024

    2.8in
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