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Hazardous Weather Conditions

Current conditions at

Smithfield, Johnston County Airport (KJNX)

Lat: 35.54°NLon: 78.39°WElev: 164ft.

Overcast

70°F

21°C

Humidity 94%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 68°F (20°C)
Visibility 8.00 mi
Last update 22 Jun 6:35 am EDT
Extended Forecast for

Smithfield, Johnston County Airport NC

  • Today

    Today: Mostly cloudy, then gradually becoming sunny and hot, with a high near 97. Heat index values as high as 102. Light south wind increasing to 5 to 10 mph in the morning.

    High: 97 °F

    Hot

  • Tonight

    Tonight: A chance of showers and thunderstorms before 3am, then a slight chance of showers. Partly cloudy, with a low around 72. Southwest wind 5 to 8 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 72 °F

    Chance
    T-storms then
    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly sunny, with a high near 92. Southwest wind 7 to 9 mph becoming northwest in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Sunny then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 66. Northwest wind around 6 mph becoming calm in the evening.

    Low: 66 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 91. Northeast wind 5 to 7 mph becoming calm in the afternoon.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 68.

    Low: 68 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 93.

    High: 93 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: A chance of showers between 8pm and 2am. Partly cloudy, with a low around 72. Chance of precipitation is 30%.

    Low: 72 °F

    Chance
    Showers

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Chance of precipitation is 50%.

    High: 96 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny and hot, with a high near 97. Heat index values as high as 102. Light south wind increasing to 5 to 10 mph in the morning.
Tonight
A chance of showers and thunderstorms before 3am, then a slight chance of showers. Partly cloudy, with a low around 72. Southwest wind 5 to 8 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A chance of showers and thunderstorms, mainly between 4pm and 5pm. Mostly sunny, with a high near 92. Southwest wind 7 to 9 mph becoming northwest in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Partly cloudy, with a low around 66. Northwest wind around 6 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 91. Northeast wind 5 to 7 mph becoming calm in the afternoon.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Mostly sunny, with a high near 93.
Thursday Night
A chance of showers between 8pm and 2am. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 96. Chance of precipitation is 50%.
Friday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 72. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 96. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 96.
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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:
4:31 am EDT Jun 22, 2026
Forecast Valid:
6am EDT Jun 22, 2026-6pm EDT Jun 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation