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

45°F

7°C

Humidity 100%
Wind Speed Calm
Barometer 30.06 in
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Last update 28 Feb 9:15 pm EST
Extended Forecast for

Clayton NC

  • Tonight

    Tonight: Areas of fog after 5am. Otherwise, mostly clear, with a low around 42. Calm wind.

    Low: 42 °F

    Clear then
    Areas Fog

  • Sunday

    Sunday: Areas of fog before 9am. Otherwise, sunny, with a high near 74. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 74 °F

    Areas Fog
    then Sunny

  • Sunday Night

    Sunday Night: A chance of showers, mainly before 9pm. Mostly cloudy, with a low around 38. Northeast wind 8 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 38 °F

    Chance
    Showers then
    Mostly Cloudy

  • Monday

    Monday: A chance of rain, mainly after 4pm. Mostly cloudy, with a high near 47. Northeast wind 8 to 13 mph. Chance of precipitation is 30%.

    High: 47 °F

    Chance Rain

  • Monday Night

    Monday Night: A chance of rain. Cloudy, with a low around 36. Northeast wind 3 to 6 mph. Chance of precipitation is 30%.

    Low: 36 °F

    Chance Rain

  • Tuesday

    Tuesday: A slight chance of rain before 10am. Mostly cloudy, with a high near 58. Chance of precipitation is 20%.

    High: 58 °F

    Slight Chance
    Rain then
    Mostly Cloudy

  • Tuesday Night

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

    Low: 49 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 73.

    High: 73 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 54.

    Low: 54 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Areas of fog after 5am. Otherwise, mostly clear, with a low around 42. Calm wind.
Sunday
Areas of fog before 9am. Otherwise, sunny, with a high near 74. Calm wind becoming west 5 to 8 mph in the afternoon.
Sunday Night
A chance of showers, mainly before 9pm. Mostly cloudy, with a low around 38. Northeast wind 8 to 14 mph, with gusts as high as 21 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Monday
A chance of rain, mainly after 4pm. Mostly cloudy, with a high near 47. Northeast wind 8 to 13 mph. Chance of precipitation is 30%.
Monday Night
A chance of rain. Cloudy, with a low around 36. Northeast wind 3 to 6 mph. Chance of precipitation is 30%.
Tuesday
A slight chance of rain before 10am. Mostly cloudy, with a high near 58. Chance of precipitation is 20%.
Tuesday Night
Mostly cloudy, with a low around 49.
Wednesday
Partly sunny, with a high near 73.
Wednesday Night
Mostly cloudy, with a low around 54.
Thursday
Partly sunny, with a high near 75.
Thursday Night
Partly cloudy, with a low around 58.
Friday
A chance of rain. Partly sunny, with a high near 77. Chance of precipitation is 30%.
Friday Night
Partly cloudy, with a low around 61.
Saturday
A chance of rain. Mostly cloudy, with a high near 78. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Clayton NC
 35.64°N 78.45°W (Elev. 299 ft)
Last Update:
3:56 pm EST Feb 28, 2026
Forecast Valid:
9pm EST Feb 28, 2026-6pm EST Mar 7, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation