Iowa Speedway Weather Forecast

    • 74
    • 92

    Slight Chance Thunderstorms

    • 72
    • 92

    Chance Thunderstorms

    • 71
    • 92

    Chance Thunderstorms

    • 68
    • 90

    Chance Thunderstorms

    • 67
    • 88

    Chance Thunderstorms

Today 1 Jul Jasper

Mostly sunny. Highs in the lower 90s. Southwest Winds 15 to 20 Mph with Gusts up to 30 Mph. Heat index Values up to 102 this afternoon.

Tonight 1 Jul Jasper

Mostly clear with a slight chance of Showers and Thunderstorms in the Evening, then partly cloudy with a chance of Showers and Thunderstorms after midnight. Humid with Lows in the mid 70s. South Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 50 percent. Heat index Values up to 102 early in the evening.

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Iowa Speedway Temperature Statistics

July Temperature

Newton Municipal Airport - Earl Johnson Field (0 miles)

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Climate (2021–2026)

Newton Municipal Airport - Earl Johnson Field (0 miles)

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  • Average Low 2021–2026

    41.6 °F

  • Average 2021–2026

    51.5 °F

  • Average High 2021–2026

    61.5 °F
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