Current conditions at

Smithfield, Johnston County Airport (KJNX)

Lat: 35.54° N Lon: 78.39° W Elev: 164 ft.

Fair

73°F

23°C

Humidity 100%
Wind Speed Calm
Barometer 30.02 in
Dewpoint 73°F (23°C)
Visibility 10.00 mi
Last update 3 Sep 1:55 am EDT
Detailed forecast for

Johnston County

Tonight
Mostly clear. Lows in the lower 70s. South winds around 5 mph.
Thursday
Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 108 in the afternoon.
Thursday Night
Mostly clear. Lows in the mid 70s. Southwest winds around 5 mph.
Friday
Sunny, hot with highs in the upper 90s. Southwest winds around 5 mph. Heat index values up to 109.
Friday Night
Partly cloudy with a slight chance of showers and thunderstorms. Lows in the mid 70s. Southwest winds around 5 mph. Chance of rain 20 percent.
Saturday
Partly sunny. A chance of showers and thunderstorms in the afternoon. Hot with highs in the mid 90s. Chance of rain 50 percent. Heat index values up to 105.
Saturday Night
A chance of thunderstorms. Showers likely. Lows around 70. Chance of rain 60 percent.
Sunday And Sunday Night
Partly cloudy. A chance of showers. Highs in the mid 80s. Lows in the mid 60s. Chance of rain 40 percent.
Labor Day Through Wednesday
Mostly clear. Highs in the upper 80s. Lows in the upper 60s.



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408 PM EDT Wed Sep 2 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database