National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Smithfield, Johnston County Airport (KJNX)

Lat: 35.54°NLon: 78.39°WElev: 164ft.

Fair

73°F

23°C

Humidity 89%
Wind Speed S 6 mph
Barometer 29.97 in
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 4 Sep 11:35 pm EDT
Extended Forecast for

Clayton NC

Heat Advisory September 5, 11:00am until September 5, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Partly cloudy, with a low around 73. Southwest wind 3 to 5 mph.

    Low: 73 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Increasing clouds and hot, with a high near 97. Heat index values as high as 104. West wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    High: 97 °F

    Sunny then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and 2am. Mostly cloudy, with a low around 72. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 72 °F

    Showers
    Likely then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Northeast wind 5 to 7 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Partly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 65. Northeast wind 3 to 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Labor Day

    Labor Day: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 65.

    Low: 65 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 73. Southwest wind 3 to 5 mph.
Saturday
A slight chance of showers and thunderstorms between 2pm and 5pm, then showers likely and possibly a thunderstorm after 5pm. Increasing clouds and hot, with a high near 97. Heat index values as high as 104. West wind around 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers likely and possibly a thunderstorm before 11pm, then a chance of showers and thunderstorms between 11pm and 2am. Mostly cloudy, with a low around 72. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Northeast wind 5 to 7 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Mostly cloudy, with a low around 65. Northeast wind 3 to 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Labor Day
Mostly sunny, with a high near 83.
Monday Night
Mostly clear, with a low around 63.
Tuesday
Sunny, with a high near 86.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Sunny, with a high near 95.
Thursday Night
Partly cloudy, with a low around 72.
Friday
Sunny, with a high near 92.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Clayton NC
 35.64°N 78.45°W (Elev. 299 ft)
Last Update:
10:07 pm EDT Sep 4, 2026
Forecast Valid:
12am EDT Sep 5, 2026-6pm EDT Sep 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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