St. Stephen, South Carolina Weather
Heat settles and the rain begins. Day 90 of spring. Read this microseason across nine climate regions →
St. Stephen weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 17Thunderstorm50%0.56″85°72°—
- ThursdayJun 18Thunderstorm27%—93°74°+8°
- FridayJun 19Thunderstorm74%0.10″89°72°-4°
- SaturdayJun 20Thunderstorm35%—94°74°+5°
- SundayJun 21Light Drizzle11%0.02″97°72°+3°
- MondayJun 22Thunderstorm17%—90°75°-7°
- TuesdayJun 23Overcast40%—88°70°-2°
AQI 21 (Good), driven by Ozone. AQI down 5 over the last 6 hours (gradual decline).
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 10 PM.
Trends
Seven days of AQI and PM2.5.
Hourly air-quality data from the Copernicus Atmosphere Monitoring Service, charted across the past and next several days. Dashed lines mark the AQI breakpoints at 50 (Good → Moderate) and 100 (Moderate → Unhealthy for Sensitive Groups).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 8:38 AM
- Moonset
- 10:34 PM
- In sign
- ♌︎ Leo
Heat settles and the rain begins
St. Stephen at a glance
- Today vs. normal: 5°F below the seasonal normal for this latitude
- Last frost: March 7 (climatological average for this latitude)
- Microseason: Jun 16–20
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — St. Stephen
- Wed85°72°50%
- Thu93°74°27%
- Fri89°72°74%
- Sat94°74°35%
- Sun97°72°11%
- Mon90°75°17%
- Tue88°70°40%
- Wed91°67°33%
- Thu89°71°31%
- Fri95°68°36%
- Sat96°69°21%
- Sun97°69°26%
- Mon99°72°40%
- Tue92°73°48%
- Wed90°73°45%
- Thu88°72°35%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 17, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.
SPC Convective Outlook
Storm Prediction Center — St. Stephen
SPC has placed St. Stephen in the Marginal Risk category for severe thunderstorms tomorrow.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWMRGLMarginal Risk
- DAY 3TSTMGeneral Thunderstorms
Isolated severe storms possible. Limited threat for hail or damaging wind.
Source: NOAA / NWS Storm Prediction Center categorical convective outlook. Outlooks are re-issued multiple times per day; this page reflects the most recent SPC polygons covering the city’s coordinates.
ZIP codes in St. Stephen
- 29479