Smithfield Weather Forecast

    • 71
    • 91

    Chance Thunderstorms

    • 71
    • 86

    Chance Thunderstorms

    • 70
    • 86

    Slight Chance Thunderstorms

    • 68
    • 86

    Partly Sunny

    • 68
    • 83

    Slight Chance Thunderstorms

    • 68
    • 83

    Chance Thunderstorms

Today 18 Aug Johnston

Partly sunny with a slight chance of Showers and Thunderstorms. Near steady temperature in the upper 80s. Northeast Winds around 5 Mph. Chance of rain 20 percent.

Tonight 18 Aug Johnston

Partly cloudy with a chance of Showers and Thunderstorms in the Evening, then mostly cloudy after midnight. Lows in the lower 70s. Northeast Winds around 5 Mph. Chance of rain 40 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Smithfield Temperature Statistics

August Temperature

Smithfield, Johnston County Airport (3.1 miles)

  • Lowest 3 August, 2025

    62.6 °F

  • Average August

    74.9 °F

  • Highest 14 August, 2025

    89.6 °F

Climate (2020–Present)

Smithfield, Johnston County Airport (3.1 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    51.1 °F

  • Average 2020–2025

    61.6 °F

  • Average High 2020–2025

    73.3 °F
Get WillyWeather+ to remove ads