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

68°F

20°C

Humidity 33%
Wind Speed S 8 mph
Barometer 30.22 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Last update 25 Mar 4:35 pm EDT
Extended Forecast for

Smithfield, Johnston County Airport NC

  • Tonight

    Tonight: Mostly cloudy, with a low around 48. Light south wind.

    Low: 48 °F

    Mostly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 79. Light southwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 21 mph.

    High: 79 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58. Southwest wind 6 to 9 mph.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 89. Southwest wind around 10 mph.

    High: 89 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 2am, then a chance of showers. Mostly cloudy, with a low around 44. North wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 44 °F

    Showers
    Likely

  • Saturday

    Saturday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Saturday Night

    Saturday Night: Patchy frost after 3am. Otherwise, clear, with a low around 33.

    Low: 33 °F

    Clear then
    Patchy Frost

  • Sunday

    Sunday: Patchy frost before 9am. Otherwise, sunny, with a high near 64.

    High: 64 °F

    Patchy Frost
    then Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 40.

    Low: 40 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 48. Light south wind.
Thursday
Mostly sunny, with a high near 79. Light southwest wind increasing to 8 to 13 mph in the morning. Winds could gust as high as 21 mph.
Thursday Night
Mostly clear, with a low around 58. Southwest wind 6 to 9 mph.
Friday
Mostly sunny, with a high near 89. Southwest wind around 10 mph.
Friday Night
Showers and thunderstorms likely before 2am, then a chance of showers. Mostly cloudy, with a low around 44. North wind 9 to 15 mph, with gusts as high as 26 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Sunny, with a high near 58.
Saturday Night
Patchy frost after 3am. Otherwise, clear, with a low around 33.
Sunday
Patchy frost before 9am. Otherwise, sunny, with a high near 64.
Sunday Night
Mostly clear, with a low around 40.
Monday
Mostly sunny, with a high near 74.
Monday Night
Mostly clear, with a low around 50.
Tuesday
Sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 83.
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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:
2:23 pm EDT Mar 25, 2026
Forecast Valid:
4pm EDT Mar 25, 2026-6pm EDT Apr 1, 2026
 
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