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

39°F

4°C

Humidity 56%
Wind Speed SW 6 mph
Barometer 29.88 in
Dewpoint 25°F (-4°C)
Visibility 10.00 mi
Wind Chill35°F (2°C)
Last update 14 Jan 3:15 am EST
Extended Forecast for

Smithfield, Johnston County Airport NC

  • Overnight

    Overnight: Partly cloudy, with a low around 34. Southwest wind around 6 mph.

    Low: 34 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers, mainly between 1pm and 4pm. Increasing clouds, with a high near 56. Southwest wind 6 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 56 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 29. Southwest wind 6 to 9 mph becoming northwest after midnight. Chance of precipitation is 20%.

    Low: 29 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: Mostly cloudy, then gradually becoming sunny, with a high near 42. Northwest wind 10 to 13 mph, with gusts as high as 20 mph.

    High: 42 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Clear, with a low around 18. Northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 18 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 30.

    Low: 30 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 57.

    High: 57 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 28.

    Low: 28 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 34. Southwest wind around 6 mph.
Wednesday
A chance of showers, mainly between 1pm and 4pm. Increasing clouds, with a high near 56. Southwest wind 6 to 10 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A slight chance of showers between 2am and 3am. Mostly cloudy, with a low around 29. Southwest wind 6 to 9 mph becoming northwest after midnight. Chance of precipitation is 20%.
Thursday
Mostly cloudy, then gradually becoming sunny, with a high near 42. Northwest wind 10 to 13 mph, with gusts as high as 20 mph.
Thursday Night
Clear, with a low around 18. Northwest wind 5 to 7 mph becoming calm after midnight.
Friday
Sunny, with a high near 45.
Friday Night
Mostly clear, with a low around 30.
Saturday
Mostly sunny, with a high near 57.
Saturday Night
Partly cloudy, with a low around 28.
Sunday
Mostly sunny, with a high near 40.
Sunday Night
Mostly clear, with a low around 20.
M.L.King Day
Sunny, with a high near 45.
Monday Night
Mostly clear, with a low around 22.
Tuesday
Sunny, with a high near 43.
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Forecast Area
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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:
2:08 am EST Jan 14, 2026
Forecast Valid:
3am EST Jan 14, 2026-6pm EST Jan 20, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation