Altoona Weather Forecast

    • 56
    • 63

    Rain Showers

    • 45
    • 69

    Mostly Sunny

    • 53
    • 69

    Chance Rain Showers

    • 55
    • 73

    Rain Showers Likely

    • 57
    • 72

    Rain Showers Likely

    • 53
    • 71

    Slight Chance Thunderstorms

Today 14 Sep Eau Claire

Increasing Clouds. Chance of rain Showers and slight chance of Thunderstorms early in the afternoon. Rain Showers and chance of Thunderstorms late in the afternoon. Highs in the lower 60s. Southeast Winds around 10 Mph increasing to 15 to 20 Mph with Gusts to around 35 Mph in the afternoon. Chance of precipitation near 100 percent.

Tonight 14 Sep Eau Claire

Warmer. Rain Showers and chance of Thunderstorms in the Evening, then chance of rain Showers and slight chance of Thunderstorms after midnight. Lows in the mid 50s. Southeast Winds 15 to 20 Mph with Gusts to around 35 Mph shifting to the south 5 to 15 Mph after midnight. Chance of precipitation near 100 percent.

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Altoona Temperature Statistics

September Temperature

Chippewa Valley Regional Airport (4.3 miles)

  • Lowest 10 September, 2026

    52.6 °F

  • Average September

    72.5 °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

    47.2 °F

  • Average High 2021–2026

    57.2 °F
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