Altoona Weather Forecast

    • 44
    • 61

    Clearing Late

    • 42
    • 63

    Mostly Sunny

    • 44
    • 66

    Mostly Sunny

    • 48
    • 67

    Mostly Cloudy

    • 50
    • 70

    Mostly Cloudy

    • 52
    • 68

    Slight Chance Rain Showers

Today 21 Sep Eau Claire

Cloudy. A 20 percent chance of rain Showers late in the afternoon. Near steady temperature around 60. East Winds 5 to 10 Mph.

Tonight 21 Sep Eau Claire

Mostly cloudy. Lows in the mid 40s. East Winds up to 5 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Altoona Temperature Statistics

September Temperature

Chippewa Valley Regional Airport (4.3 miles)

  • Lowest 14 September, 2026

    38.6 °F

  • Average September

    67.2 °F

  • Highest 1 September, 2026

    89.7 °F

Climate (2021–2026)

Chippewa Valley Regional Airport (4.3 miles)

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  • Average Low 2021–2026

    36.9 °F

  • Average 2021–2026

    47.1 °F

  • Average High 2021–2026

    57.1 °F
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