Grand Gulf Weather Forecast

    • 76
    • 94

    Thunderstorms Likely

    • 76
    • 93

    Rain Showers Likely

    • 74
    • 92

    Chance Rain Showers

    • 73
    • 90

    Partly Sunny

    • 73
    • 91

    Mostly Sunny

    • 74
    • 93

    Slight Chance Thunderstorms

Today 30 Jul Claiborne

Partly cloudy. A chance of Showers with a slight chance of Thunderstorms this morning. A chance of Showers and Thunderstorms this afternoon. Humid with Highs in the mid 90s. Light and variable Winds, becoming west around 5 Mph. Chance of rain 50 percent. Heat index Values up to 114.

Tonight 30 Jul Claiborne

Mostly cloudy with a chance of Showers and Thunderstorms in the Evening, then partly cloudy after midnight. Humid with Lows in the mid 70s. West Winds around 5 Mph, becoming southwest after midnight. Chance of rain 50 percent. Heat index Values up to 108 early in the evening.

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Grand Gulf Temperature Statistics

July Temperature

Vicksburg Municipal (14.9 miles)

  • Lowest 7 July, 2026

    71.6 °F

  • Average July

    83.3 °F

  • Highest 21 July, 2026

    98.6 °F

Climate (2021–2026)

Vicksburg Municipal (14.9 miles)

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  • Average Low 2021–2026

    56.7 °F

  • Average 2021–2026

    66.7 °F

  • Average High 2021–2026

    77.7 °F
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