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.

A Few Clouds

72°F

22°C

Humidity 78%
Wind Speed W 9 mph
Barometer 30.19 in
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 17 May 8:55 am EDT
Extended Forecast for

Smithfield, Johnston County Airport NC

  • Today

    Today: Sunny, with a high near 91. Southwest wind around 6 mph.

    High: 91 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 64. Calm wind becoming south around 6 mph.

    Low: 64 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 93. South wind 3 to 7 mph.

    High: 93 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 64. South wind around 6 mph becoming calm after midnight.

    Low: 64 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 92. Southwest wind 3 to 6 mph.

    High: 92 °F

    Sunny

  • Tuesday Night

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

    Low: 65 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Thursday

    Thursday: Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.

    High: 87 °F

    Mostly Sunny
    then Showers
    Likely

Detailed Forecast

Today
Sunny, with a high near 91. Southwest wind around 6 mph.
Tonight
Mostly clear, with a low around 64. Calm wind becoming south around 6 mph.
Monday
Sunny, with a high near 93. South wind 3 to 7 mph.
Monday Night
Clear, with a low around 64. South wind around 6 mph becoming calm after midnight.
Tuesday
Sunny, with a high near 92. Southwest wind 3 to 6 mph.
Tuesday Night
Mostly clear, with a low around 65.
Wednesday
Sunny, with a high near 93.
Wednesday Night
Partly cloudy, with a low around 67.
Thursday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 87. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 70%.
Friday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 79. Chance of precipitation is 60%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Saturday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 81. Chance of precipitation is 70%.
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ABOUT THIS FORECAST

 
Point Forecast:
Smithfield, Johnston County Airport NC
 35.56°N 78.38°W (Elev. 230 ft)
Last Update:
6:25 am EDT May 17, 2026
Forecast Valid:
9am EDT May 17, 2026-6pm EDT May 23, 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