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

32°F

0°C

Humidity 100%
Wind Speed Calm
Barometer 30.18 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 4 Jan 8:35 pm EST
Extended Forecast for

Smithfield, Johnston County Airport NC

  • Tonight

    Tonight: Mostly cloudy, with a low around 29. Calm wind.

    Low: 29 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 59. Calm wind becoming south around 5 mph.

    High: 59 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Areas of fog after 5am. Otherwise, partly cloudy, with a low around 40. Calm wind.

    Low: 40 °F

    Partly Cloudy
    then Areas
    Fog

  • Tuesday

    Tuesday: Areas of fog before 10am. Otherwise, partly sunny, with a high near 67. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 21 mph.

    High: 67 °F

    Areas Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 48. Southwest wind around 7 mph.

    Low: 48 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 71.

    High: 71 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 69.

    High: 69 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 49.

    Low: 49 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 29. Calm wind.
Monday
Mostly sunny, with a high near 59. Calm wind becoming south around 5 mph.
Monday Night
Areas of fog after 5am. Otherwise, partly cloudy, with a low around 40. Calm wind.
Tuesday
Areas of fog before 10am. Otherwise, partly sunny, with a high near 67. Light southwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 21 mph.
Tuesday Night
Partly cloudy, with a low around 48. Southwest wind around 7 mph.
Wednesday
Mostly sunny, with a high near 71.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Mostly sunny, with a high near 69.
Thursday Night
Mostly cloudy, with a low around 49.
Friday
Mostly cloudy, with a high near 73.
Friday Night
A chance of rain. Mostly cloudy, with a low around 52. Chance of precipitation is 40%.
Saturday
A chance of rain. Mostly cloudy, with a high near 68. Chance of precipitation is 40%.
Saturday Night
A chance of rain. Mostly cloudy, with a low around 39. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 54.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Smithfield, Johnston County Airport NC
 35.54°N 78.38°W (Elev. 200 ft)
Last Update:
6:37 pm EST Jan 4, 2026
Forecast Valid:
8pm EST Jan 4, 2026-6pm EST Jan 11, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation