Marissa Weather Forecast

    • 78
    • 97

    Hot

    • 69
    • 92

    Mostly Sunny

    • 66
    • 87

    Mostly Sunny

    • 68
    • 88

    Partly Sunny

    • 68
    • 84

    Slight Chance Thunderstorms

    • 67
    • 83

    Slight Chance Thunderstorms

Today 27 Jul St. Clair

Sunny. A slight chance of Showers and Thunderstorms this afternoon. Hot with Highs in the upper 90s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 115.

Tonight 27 Jul St. Clair

Mostly clear. A slight chance of Showers and Thunderstorms in the evening. Humid with Lows in the upper 70s. Southwest Winds around 5 Mph. Chance of rain 20 percent. Heat index Values up to 114 early in the evening.

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Marissa Temperature Statistics

July Temperature

Sparta Community-Hunter Field Airport (7.5 miles)

  • Lowest 3 July, 2026

    78.8 °F

  • Average July

    78.8 °F

  • Highest 3 July, 2026

    78.8 °F

Climate (2021–2026)

Sparta Community-Hunter Field Airport (7.5 miles)

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  • Average Low 2021–2026

    48.4 °F

  • Average 2021–2026

    57.7 °F

  • Average High 2021–2026

    67.2 °F
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