Smithfield Weather Forecast

    • 71
    • 88

    Rain Showers Likely

    • 62
    • 87

    Chance Thunderstorms

    • 63
    • 82

    Chance Rain Showers

    • 57
    • 79

    Chance Rain Showers

    • 55
    • 75

    Slight Chance Rain Showers

    • 57
    • 78

    Slight Chance Thunderstorms

Today 27 May Johnston

Mostly cloudy. A slight chance of Showers and Thunderstorms this afternoon. Highs in the upper 80s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 20 percent.

Tonight 27 May Johnston

Partly cloudy with a slight chance of Showers and Thunderstorms. Lows around 70. Southwest Winds 5 to 10 Mph. Chance of rain 20 percent.

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Smithfield Temperature Statistics

May Temperature

Smithfield, Johnston County Airport (3.1 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 (3.1 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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