National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Smithfield, Johnston County Airport (KJNX)

Lat: 35.54°NLon: 78.39°WElev: 164ft.

Fair

72°F

22°C

Humidity 29%
Wind Speed S 12 mph
Barometer 30.01 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 20 Mar 4:55 pm EDT
Extended Forecast for

Smithfield, Johnston County Airport NC

  • Tonight

    Tonight: A slight chance of showers between 10pm and 2am. Mostly cloudy, with a low around 50. South wind 7 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.

    Low: 50 °F

    Slight Chance
    Showers

  • Saturday

    Saturday: Partly sunny, with a high near 78. Southwest wind 5 to 7 mph becoming northwest in the afternoon.

    High: 78 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 52. Light southeast wind.

    Low: 52 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 86. Calm wind becoming southwest 5 to 9 mph in the afternoon.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 59. Southwest wind 3 to 7 mph.

    Low: 59 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 60.

    High: 60 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 39.

    Low: 39 °F

    Mostly Cloudy

Detailed Forecast

Tonight
A slight chance of showers between 10pm and 2am. Mostly cloudy, with a low around 50. South wind 7 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 20%.
Saturday
Partly sunny, with a high near 78. Southwest wind 5 to 7 mph becoming northwest in the afternoon.
Saturday Night
Mostly clear, with a low around 52. Light southeast wind.
Sunday
Sunny, with a high near 86. Calm wind becoming southwest 5 to 9 mph in the afternoon.
Sunday Night
Partly cloudy, with a low around 59. Southwest wind 3 to 7 mph.
Monday
Mostly sunny, with a high near 81.
Monday Night
Mostly clear, with a low around 42.
Tuesday
Mostly sunny, with a high near 60.
Tuesday Night
Mostly cloudy, with a low around 39.
Wednesday
Partly sunny, with a high near 68.
Wednesday Night
Partly cloudy, with a low around 43.
Thursday
Mostly sunny, with a high near 72.
Thursday Night
Mostly clear, with a low around 49.
Friday
A chance of showers. Mostly sunny, with a high near 76. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Smithfield, Johnston County Airport NC
 35.54°N 78.38°W (Elev. 200 ft)
Last Update:
4:38 pm EDT Mar 20, 2026
Forecast Valid:
5pm EDT Mar 20, 2026-6pm EDT Mar 27, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation