Joanna, SC Weather & Growing Conditions
Tonight
69°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 69. East northeast wind around 2 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 69°F | Chance Showers And Thunderstorms | 2 mph ENE | 48% |
| Sunday | 88°F | Mostly Cloudy | 2 mph E | 13% |
| Sunday Night | 69°F | Partly Cloudy | 1 mph SE | 9% |
| Monday | 90°F | Patchy Fog then Chance Showers And Thunderstorms | 1 mph SSE | 26% |
| Monday Night | 69°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 2 mph E | 63% |
| Tuesday | 83°F | Chance Rain Showers then Chance Showers And Thunderstorms | 3 mph NE | 76% |
| Tuesday Night | 67°F | Showers And Thunderstorms Likely | 6 mph NE | 74% |
| Wednesday | 76°F | Chance Showers And Thunderstorms | 6 to 9 mph NE | 35% |
| Wednesday Night | 62°F | Chance Showers And Thunderstorms | 9 mph NE | 34% |
| Thursday | 74°F | Slight Chance Rain Showers then Partly Sunny | 9 mph NNE | 22% |
| Thursday Night | 60°F | Partly Cloudy | 3 to 7 mph NNE | 8% |
| Friday | 77°F | Mostly Sunny | 5 mph N | 6% |
| Friday Night | 58°F | Mostly Clear | 3 mph NNE | 6% |
| Saturday | 77°F | Mostly Sunny | 6 mph NNE | 8% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Joanna, SC
Last spring frost
Mar 29
First fall frost
Nov 4
Growing season
219 days
Hardiness zone
8a
Explore more for Joanna, SC: full frost dates · planting calendar · South Carolina frost dates
Climate data from the nearest NOAA station, Clinton, Sc (5.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.