Current conditions at

Smithfield, Johnston County Airport (KJNX)

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

Fair

43°F

6°C

Humidity 93%
Wind Speed Calm
Barometer 30.21 in
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 22 Apr 4:15 am EDT
Detailed forecast for

Johnston County

Today
Sunny. Much warmer with highs in the mid 80s. Southwest winds 10 to 15 mph with gusts up to 25 mph.
Tonight
Partly cloudy. Lows in the mid 50s. Southwest winds 5 to 10 mph.
Thursday
Sunny. Highs in the mid 80s. West winds 5 to 10 mph.
Thursday Night
Clear. Lows around 60. Southwest winds around 5 mph.
Friday
Mostly sunny. Hot with highs in the upper 80s. West winds around 5 mph.
Friday Night
Mostly clear. Lows in the lower 60s.
Saturday
Partly sunny. A chance of showers with a slight chance of thunderstorms in the afternoon. Hot with highs in the upper 80s. Chance of rain 40 percent.
Saturday Night
Showers likely. Lows in the upper 50s. Chance of rain 70 percent.
Sunday
Mostly cloudy with a 40 percent chance of showers. Not as warm with highs in the mid 70s.
Sunday Night
Partly cloudy. A chance of showers in the evening. Lows in the lower 50s. Chance of rain 30 percent.
Monday
Partly sunny. Highs in the mid 70s.
Monday Night
Partly cloudy. A chance of showers after midnight. Lows in the mid 50s. Chance of rain 30 percent.
Tuesday
Mostly cloudy. A chance of showers in the morning, then showers likely in the afternoon. Highs around 80. Chance of rain 60 percent.



Basemap Options
Click map to change the forecast location
Loading map...
408 AM EDT Wed Apr 22 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database