Gillette Weather Forecast

    • 58
    • 88

    Chance Thunderstorms

    • 59
    • 92

    Chance Thunderstorms

    • 65
    • 99

    Breezy

    • 61
    • 98

    Breezy

    • 53
    • 83

    Breezy

    • 56
    • 81

    Slight Chance Rain Showers

Today 30 Jul Northern Campbell

Partly cloudy. A slight chance of Showers and Thunderstorms in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs around 90. West Winds 5 to 10 Mph, becoming north 10 to 15 Mph in the afternoon. Gusts up to 25 Mph. Chance of rain 40 percent.

Tonight 30 Jul Northern Campbell

Mostly clear. Lows in the upper 50s. Southeast Winds 10 to 15 Mph. Gusts up to 25 Mph in the evening.

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Gillette Temperature Statistics

July Temperature

Gillette, Gillette-Campbell County Airport (3.7 miles)

  • Lowest 1 July, 2026

    46.7 °F

  • Average July

    78.7 °F

  • Highest 12 July, 2026

    104.6 °F

Climate (2021–2026)

Gillette, Gillette-Campbell County Airport (3.7 miles)

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  • Average Low 2021–2026

    35 °F

  • Average 2021–2026

    48.3 °F

  • Average High 2021–2026

    61.5 °F
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