Clayton Weather Forecast

    • 69
    • 87

    Chance Thunderstorms

    • 62
    • 86

    Chance Thunderstorms

    • 62
    • 81

    Mostly Cloudy

    • 59
    • 80

    Chance Rain Showers

    • 56
    • 77

    Slight Chance Rain Showers

    • 56
    • 79

    Chance Thunderstorms

Today 27 May Johnston

Mostly cloudy. A slight chance of Showers in the Morning, then a chance of Showers and Thunderstorms in the afternoon. Highs in the upper 80s. Southwest Winds 5 to 10 Mph. Chance of rain 40 percent.

Tonight 27 May Johnston

Mostly cloudy with a slight chance of Showers and Thunderstorms. Near steady temperature in the lower 70s. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Clayton Temperature Statistics

May Temperature

Smithfield, Johnston County Airport (8.1 miles)

  • Lowest 4 May, 2026

    39.2 °F

  • Average May

    65 °F

  • Highest 18 May, 2026

    93.2 °F

Climate (2021–Present)

Smithfield, Johnston County Airport (8.1 miles)

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  • Average Low 2021–2026

    50.8 °F

  • Average 2021–2026

    61.5 °F

  • Average High 2021–2026

    73.4 °F
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