Dangerous Heat Expands; Heavy Rainfall Threats; Fire Weather Concerns for the West

The heat will increase and expand across the Central Plains, Mississippi Valley, Southeast and into the Eastern U.S. through the week as high pressure builds across the eastern two-thirds of the country. On the northern periphery of this heat, the threat for severe thunderstorms and heavy rainfall across the northern Plains and upper Midwest through Tuesday. Critical Fire Weather for the west. Read More >

Current conditions at

Smithfield, Johnston County Airport (KJNX)

Lat: 35.54°NLon: 78.39°WElev: 164ft.

Fair

93°F

34°C

Humidity 59%
Wind Speed Calm
Barometer 29.89 in
Dewpoint 77°F (25°C)
Visibility 10.00 mi
Heat Index107°F (42°C)
Last update 21 Jul 4:30 pm EDT
Extended Forecast for

2 Miles ENE Smithfield NC

Heat Advisory July 21, 04:34pm until July 21, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory July 21, 04:34pm until July 21, 08:00pm

    NOW until 8:00pm Mon

    Heat Advisory

  • This Afternoon

    High: 96 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 1am, then a slight chance of showers after 4am.  Mostly cloudy, with a low around 75. Calm wind.  Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 75 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89. Northeast wind 6 to 9 mph.

    High: 89 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 68. East wind around 5 mph becoming calm  in the evening.

    Low: 68 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 91. Northeast wind 6 to 8 mph.

    High: 91 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers after 2pm.  Mostly sunny, with a high near 92. Chance of precipitation is 30%.

    High: 92 °F

    Sunny then
    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers before 8pm.  Partly cloudy, with a low around 73. Chance of precipitation is 30%.

    Low: 73 °F

    Chance
    Showers then
    Mostly Clear

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Mostly sunny, with a high near 96. Heat index values as high as 106. Light northwest wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 1am, then a slight chance of showers after 4am. Mostly cloudy, with a low around 75. Calm wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Mostly sunny, with a high near 89. Northeast wind 6 to 9 mph.
Tuesday Night
Mostly clear, with a low around 68. East wind around 5 mph becoming calm in the evening.
Wednesday
Sunny, with a high near 91. Northeast wind 6 to 8 mph.
Wednesday Night
Mostly clear, with a low around 70.
Thursday
A chance of showers after 2pm. Mostly sunny, with a high near 92. Chance of precipitation is 30%.
Thursday Night
A chance of showers before 8pm. Partly cloudy, with a low around 73. Chance of precipitation is 30%.
Friday
Sunny, with a high near 96.
Friday Night
Mostly clear, with a low around 77.
Saturday
Sunny and hot, with a high near 99.
Saturday Night
Partly cloudy, with a low around 77.
Sunday
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 98. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 76. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Mostly sunny, with a high near 96.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles ENE Smithfield NC
 35.51°N 78.3°W (Elev. 200 ft)
2:55 pm EDT Jul 21, 2025
4pm EDT Jul 21, 2025-6pm EDT Jul 28, 2025
 
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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