Clayton Weather Forecast

    • 57
    • 78

    Increasing Clouds

    • 49
    • 73

    Mostly Sunny

    • 56
    • 76

    Mostly Sunny

    • 64
    • 88

    Mostly Sunny

    • 66
    • 92

    Mostly Sunny

    • 67
    • 92

    Mostly Sunny

Today 13 May Johnston

Mostly sunny. Highs in the upper 70s. South Winds around 5 Mph.

Tonight 13 May Johnston

Mostly clear in the Evening, then mostly cloudy with a slight chance of Showers after midnight. Lows in the upper 50s. Southwest Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Real-Time

Clayton Temperature Statistics

May Temperature

Smithfield, Johnston County Airport (8.1 miles)

  • Lowest 4 May, 2026

    39.2 °F

  • Average May

    60.6 °F

  • Highest 10 May, 2026

    84.2 °F

Climate (2021–Present)

Smithfield, Johnston County Airport (8.1 miles)

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  • Average Low 2021–2026

    50.7 °F

  • Average 2021–2026

    61.5 °F

  • Average High 2021–2026

    73.4 °F
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