Joanna, SC Weather & Growing Conditions
Today
83°F
Patchy Fog
Patchy fog and a chance of showers and thunderstorms before 2pm, then showers and thunderstorms. Mostly cloudy, with a high near 83. East wind 0 to 3 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Patchy Fog | 0 to 3 mph E | 79% |
| Tonight | 68°F | Showers And Thunderstorms then Slight Chance Showers And Thunderstorms | 2 mph NE | 76% |
| Wednesday | 84°F | Slight Chance Showers And Thunderstorms | 0 to 3 mph SE | 62% |
| Wednesday Night | 69°F | Showers And Thunderstorms then Chance Showers And Thunderstorms | 2 mph S | 77% |
| Thursday | 87°F | Showers And Thunderstorms Likely | 0 to 3 mph S | 58% |
| Thursday Night | 69°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 2 mph S | 58% |
| Friday | 88°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 3 mph S | 37% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 1 mph W | 37% |
| Saturday | 88°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 2 mph S | 23% |
| Saturday Night | 70°F | Slight Chance Showers And Thunderstorms | 1 mph E | 23% |
| Sunday | 88°F | Slight Chance Rain Showers then Chance Showers And Thunderstorms | 2 mph W | 35% |
| Sunday Night | 71°F | Chance Showers And Thunderstorms | 1 mph W | 35% |
| Monday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 3 mph SW | 25% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 2 mph SW | 25% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Joanna, SC
Last spring frost
Mar 31
First fall frost
Nov 7
Growing season
223 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, Newberry, Sc (8.8 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.