Smithfield, NC Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Smithfield, a town in Johnston County, North Carolina.
This Afternoon
80°F
Sunny
Sunny. High near 80, with temperatures falling to around 73 in the afternoon. East wind around 3 mph.
7-day forecast for Smithfield
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 80°F | Sunny | 3 mph E | 0% |
| Tonight | 54°F | Mostly Clear | 0 to 3 mph E | 1% |
| Wednesday | 82°F | Partly Sunny | 1 to 7 mph SE | 2% |
| Wednesday Night | 62°F | Mostly Cloudy | 1 to 5 mph SE | 4% |
| Thursday | 83°F | Partly Sunny then Chance Rain Showers | 2 to 7 mph S | 25% |
| Thursday Night | 67°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 2 mph S | 25% |
| Friday | 77°F | Slight Chance Showers And Thunderstorms then Showers And Thunderstorms | 2 to 7 mph SW | 86% |
| Friday Night | 56°F | Rain Showers | 0 to 3 mph NW | 86% |
| Saturday | 72°F | Slight Chance Rain Showers then Mostly Sunny | 6 mph N | 16% |
| Saturday Night | 46°F | Partly Cloudy | 2 mph N | 7% |
| Sunday | 67°F | Mostly Sunny | 3 mph N | 6% |
| Sunday Night | 45°F | Mostly Clear | 3 mph NW | 13% |
| Monday | 65°F | Sunny | 3 to 9 mph W | 14% |
| Monday Night | 41°F | Mostly Clear | 1 to 5 mph W | 8% |
Forecast source: National Weather Service (api.weather.gov) for Smithfield (35.524, -78.352). Updated through the day.
Growing snapshot for Smithfield
Last spring frost
Mar 29
First fall frost
Nov 5
Growing season
220 days
Hardiness zone
8a
More local growing data for Smithfield: nearby ZIP 27577 weather · frost dates · planting calendar · North Carolina frost dates
Nearby towns & communities
All North Carolina locations ›
Climate data from the nearest NOAA station, Smithfield, Nc (1.7 mi from Smithfield). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.