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

90°F

32°C

Humidity 67%
Wind Speed SW 8 mph
Barometer 30.01 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index104°F (40°C)
Last update 20 Aug 11:15 am EDT
Extended Forecast for

Garner NC

Heat Advisory August 20, 11:37am until August 20, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory August 20, 11:37am until August 20, 08:00pm

    NOW until 8:00pm Thu

    Heat Advisory

  • Today

    High: 95 °F

    Mostly Sunny

  • Tonight

    Tonight: Showers and thunderstorms likely before 2am, then scattered showers. Mostly cloudy, with a low around 73. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Showers
    Likely

  • Friday

    Friday: A slight chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 90. Heat index values as high as 102. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.

    High: 90 °F

    Chance
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 7pm, then showers and possibly a thunderstorm between 7pm and 2am, then a chance of showers after 2am. Some of the storms could produce heavy rainfall. Low around 70. Light south wind. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Low: 70 °F

    Heavy Rain
    then Showers

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 87. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Partly cloudy, with a low around 70. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Sunny, with a high near 89.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

Detailed Forecast

Today
Mostly sunny, with a high near 95. Heat index values as high as 103. Southwest wind around 7 mph.
Tonight
Showers and thunderstorms likely before 2am, then scattered showers. Mostly cloudy, with a low around 73. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers and thunderstorms before 1pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 90. Heat index values as high as 102. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers and thunderstorms likely before 7pm, then showers and possibly a thunderstorm between 7pm and 2am, then a chance of showers after 2am. Some of the storms could produce heavy rainfall. Low around 70. Light south wind. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Saturday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 87. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Partly cloudy, with a low around 70. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Sunny, with a high near 89.
Sunday Night
Partly cloudy, with a low around 68.
Monday
Sunny, with a high near 87.
Monday Night
Mostly clear, with a low around 67.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. Chance of precipitation is 30%.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Garner NC
 35.68°N 78.61°W (Elev. 299 ft)
Last Update:
9:49 am EDT Aug 20, 2026
Forecast Valid:
11am EDT Aug 20, 2026-6pm EDT Aug 26, 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