Smithfield, NC Weather Forecast
Johnston County, North Carolina
The next few hours
A dry evening, clear
It is 58° with a dew point of 36°, which is dry for this time of year. The sky is clear.
Nothing in the next day and a half is wet enough to move plans for.
Colour and bar height both show how heavy the rain would look on radar. A dotted line means the model has no reading for that hour, which is not the same as no rain.
Hour by hour
Dry and warming through tomorrow
Nothing wet is expected over the next day and a half.
The overnight low settles near 41°. Tomorrow reaches 65°, 5° warmer than today.
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
35–70°F across the weekThe week runs between 41° and 70°, with Wednesday the warmest day of it. There is no real trend across it: one day looks much like the next. Every day in the outlook stays dry.
About the Smithfield forecast
Smithfield sits at 35.5238°N, 78.3522°W in Johnston County, North Carolina. The forecast above is drawn for that point from the National Weather Service's own computer models: a seven-day outlook, and a finer-grained one covering the next eighteen hours where it reaches, and the radar and alert panels show what the Weather Service has out over the area right now.
- County
- Johnston County
- Coordinates
- 35.5238°N, 78.3522°W
- Population
- 12,468 · 2023 estimate
- Land area
- 12.702 sq mi
Place data from the US Census Bureau. Coordinates are the Census internal point for Smithfield, and the forecast is for that location, not for every address inside the city limits, and a large city can have real weather differences from one side to the other.
How well can the network see Smithfield?
The nearest Doppler radar is KRAX (Raleigh/Durham, NC), 12 miles to the NW. A WSR-88D's lowest routine scan sits half a degree above horizontal, and the earth curves away beneath it, so by the time that beam reaches Smithfield its center is about 650 ft above ground. That is about as close as radar coverage gets in the United States: the lowest scan is still near the ground when it reaches Smithfield, so low-level rotation and the leading edge of a gust front show up on it. Smithfield is closer to its radar than 93% of US cities.
The closest instrument actually measuring the air is KJNX · Smithfield/Johnston Rgnl on the ASOS/AWOS network, 2.5 miles away. Close enough that its readings are, for practical purposes, the conditions in town.
Beam height is the standard 4/3-earth approximation for the 0.5° scan and assumes normal refraction; it is where the center of the beam is, not its edges, and unusual temperature profiles bend it. Radar siting from the NWS WSR-88D network, station positions from the North Carolina observing network as of this build.
Forecasts near Smithfield
- Selma, NC4 mi
- Wilson's Mills, NC4 mi
- Four Oaks, NC7 mi
- Clayton, NC11 mi
- Archer Lodge, NC11 mi
- Benson, NC14 mi
- Wendell, NC17 mi
- Garner, NC19 mi
Elsewhere in North Carolina
CharlotteRaleighGreensboroDurhamWinston-SalemFayettevilleAll North Carolina forecasts →