Seneca, SC Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Seneca, a city in Oconee County, South Carolina.
Today
83°F
Showers And Thunderstorms Likely
A chance of rain showers between 7am and 11am, then showers and thunderstorms likely between 11am and 2pm, then showers and thunderstorms likely between 2pm and 3pm, then showers and thunderstorms between 3pm and 4pm, then showers and thunderstorms likely. Partly sunny, with a high near 83. East northeast wind 2 to 6 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Seneca
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Showers And Thunderstorms Likely | 2 to 6 mph ENE | 80% |
| Tonight | 68°F | Chance Showers And Thunderstorms then Showers And Thunderstorms Likely | 5 mph NE | 58% |
| Wednesday | 84°F | Showers And Thunderstorms Likely | 3 mph ESE | 72% |
| Wednesday Night | 69°F | Showers And Thunderstorms Likely | 1 mph ESE | 71% |
| Thursday | 86°F | Chance Showers And Thunderstorms | 1 to 5 mph SSW | 73% |
| Thursday Night | 69°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 2 mph WNW | 68% |
| Friday | 86°F | Chance Showers And Thunderstorms | 2 mph SSW | 57% |
| Friday Night | 69°F | Showers And Thunderstorms Likely then Chance Showers And Thunderstorms | 1 mph SSW | 56% |
| Saturday | 87°F | Chance Showers And Thunderstorms | 2 mph SW | 44% |
| Saturday Night | 70°F | Chance Showers And Thunderstorms | 1 mph WNW | 44% |
| Sunday | 88°F | Chance Showers And Thunderstorms | 0 to 3 mph SW | 36% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 2 mph W | 36% |
| Monday | 89°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 3 mph WSW | 37% |
| Monday Night | 70°F | Chance Showers And Thunderstorms then Partly Cloudy | 2 mph WSW | 37% |
Forecast source: National Weather Service (api.weather.gov) for Seneca (34.681, -82.966). Updated through the day.
Growing snapshot for Seneca
Last spring frost
Mar 21
First fall frost
Nov 11
Growing season
236 days
Hardiness zone
8b
More local growing data for Seneca: nearby ZIP 29678 weather · frost dates · planting calendar · South Carolina frost dates
Nearby towns & communities
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Climate data from the nearest NOAA station, Clemson Oconee Co Ap, Sc (3.9 mi from Seneca). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.