Graham Field Weather Forecast

    • 59
    • 73

    Increasing Clouds

    • 67
    • 80

    Thunderstorms Likely

    • 66
    • 83

    Chance Thunderstorms

    • 69
    • 84

    Chance Thunderstorms

    • 70
    • 89

    Slight Chance Thunderstorms

    • 71
    • 93

    Slight Chance Thunderstorms

Today 17 Jul Union

Mostly sunny. Highs in the lower 70s. Northeast Winds 5 to 10 Mph, becoming east this afternoon.

Tonight 17 Jul Union

Mostly clear in the Evening, then becoming partly cloudy. Lows in the upper 50s. Southeast Winds 5 to 10 Mph.

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Graham Field Temperature Statistics

July Temperature

Sioux City, Sioux Gateway Airport (10.6 miles)

  • Lowest 13 July, 2025

    57.7 °F

  • Average July

    76.1 °F

  • Highest 3 July, 2025

    93 °F

Climate (2020–Present)

Sioux City, Sioux Gateway Airport (10.6 miles)

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  • Average Low 2020–2025

    38.7 °F

  • Average 2020–2025

    50.6 °F

  • Average High 2020–2025

    62.6 °F
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