Iowa Speedway Weather Forecast

    • 59
    • 79

    Decreasing Clouds

    • 65
    • 81

    Rain Showers Likely

    • 66
    • 83

    Rain Showers Likely

    • 64
    • 85

    Thunderstorms Likely

    • 61
    • 84

    Slight Chance Thunderstorms

    • 58
    • 80

    Mostly Sunny

Today 1 Jun Jasper

Mostly cloudy. A slight chance of Showers and Thunderstorms after Midnight, then a chance of Showers with a slight chance of Thunderstorms this morning. Highs in the upper 70s. Southeast Winds around 5 Mph, becoming northeast this afternoon. Chance of rain 50 percent.

Tonight 1 Jun Jasper

Partly cloudy. Patchy fog after midnight. Lows in the upper 50s. Northeast Winds around 5 Mph, becoming southeast after midnight.

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Iowa Speedway Temperature Statistics

June Temperature

Newton Municipal Airport - Earl Johnson Field (0 miles)

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Climate (2019–Present)

Newton Municipal Airport - Earl Johnson Field (0 miles)

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  • Average Low 2019–2024

    41.3 °F

  • Average 2019–2024

    50.8 °F

  • Average High 2019–2024

    60.6 °F
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