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

52°F

11°C

Humidity 94%
Wind Speed Calm
Barometer 29.87 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 22 Mar 3:35 am EDT
Extended Forecast for

Smithfield, Johnston County Airport NC

  • Overnight

    Overnight: Mostly clear, with a low around 53. Calm wind.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 90. Light southwest wind increasing to 6 to 11 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 90 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. Southwest wind 5 to 8 mph.

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers after 2pm. Mostly sunny, with a high near 81. West wind 7 to 13 mph becoming north in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 20%.

    High: 81 °F

    Sunny then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 39. Northeast wind around 8 mph.

    Low: 39 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 35.

    Low: 35 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 69.

    High: 69 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 47.

    Low: 47 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 53. Calm wind.
Sunday
Sunny, with a high near 90. Light southwest wind increasing to 6 to 11 mph in the afternoon. Winds could gust as high as 21 mph.
Sunday Night
Mostly clear, with a low around 61. Southwest wind 5 to 8 mph.
Monday
A slight chance of showers after 2pm. Mostly sunny, with a high near 81. West wind 7 to 13 mph becoming north in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 39. Northeast wind around 8 mph.
Tuesday
Mostly sunny, with a high near 58.
Tuesday Night
Partly cloudy, with a low around 35.
Wednesday
Partly sunny, with a high near 69.
Wednesday Night
Partly cloudy, with a low around 47.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 56.
Friday
A chance of showers. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 42. Chance of precipitation is 50%.
Saturday
A chance of showers. Partly sunny, with a high near 59. 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:
2:13 am EDT Mar 22, 2026
Forecast Valid:
3am EDT Mar 22, 2026-6pm EDT Mar 28, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

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Chance of Precipitation