Altoona Weather Forecast

    • 65
    • 85

    Chance Thunderstorms

    • 64
    • 86

    Partly Sunny

    • 63
    • 85

    Chance Thunderstorms

    • 60
    • 79

    Chance Thunderstorms

    • 58
    • 73

    Chance Rain Showers

    • 58
    • 72

    Chance Rain Showers

    • 58
    • 73

    Slight Chance Rain Showers

Today 15 Sep Eau Claire

Partly sunny with a 40 percent chance of Thunderstorms. Highs in the mid 80s. Southeast Winds 5 to 15 Mph.

Tonight 15 Sep Eau Claire

Mostly cloudy. Chance of Thunderstorms early in the Evening, then slight chance of Thunderstorms in the late evening and overnight. Lows in the mid 60s. Southeast Winds up to 10 Mph. Chance of Thunderstorms 30 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Altoona Temperature Statistics

September Temperature

Chippewa Valley Regional Airport (4.3 miles)

  • Lowest 7 September, 2025

    39.9 °F

  • Average September

    59.7 °F

  • Highest 13 September, 2025

    82.9 °F

Climate (2020–Present)

Chippewa Valley Regional Airport (4.3 miles)

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  • Average Low 2020–2025

    36.9 °F

  • Average 2020–2025

    47 °F

  • Average High 2020–2025

    57 °F
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