Janesville Weather Forecast

    • 13
    • 30

    Chance Snow

    • 20
    • 29

    Chance Snow

    • 32
    • 40

    Chance Wintry Mix

    • 30
    • 44

    Slight Chance Rain

    • 33
    • 48

    Chance Rain

    • 35
    • 56

    Chance Rain

Today 28 Feb Bremer

Mostly cloudy with a 20 percent chance of snow. Cooler. Near steady temperature in the upper 20s. Northeast Winds 10 to 15 Mph.

Tonight 28 Feb Bremer

Mostly cloudy this Evening, then becoming partly cloudy. Lows around 12. North Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Janesville Temperature Statistics

February Temperature

Waterloo, Waterloo Municipal Airport (6.8 miles)

  • Lowest 4 February, 2026

    -2.3 °F

  • Average February

    28.6 °F

  • Highest 16 February, 2026

    66.7 °F

Climate (2021–Present)

Waterloo, Waterloo Municipal Airport (6.8 miles)

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  • Average Low 2021–2026

    40.3 °F

  • Average 2021–2026

    51.2 °F

  • Average High 2021–2026

    61.9 °F
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