Barnwell, South Carolina Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Barnwell weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast21%—99°75°—
- MondayJul 6Overcast23%—98°78°-1°
- TuesdayJul 7Light Drizzle25%—98°75°0°
- WednesdayJul 8Overcast21%—102°77°+4°
- ThursdayJul 9Light Drizzle12%—98°78°-4°
- FridayJul 10Overcast12%—101°76°+3°
- SaturdayJul 11Overcast34%—104°76°+3°
AQI 25 (Good), driven by PM2.5. AQI down 15 over the last 6 hours — air quality is improving sharply. PM2.5 at 9.0 µg/m³ (AQI 50) with a 0.87 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion during the projected peak around 6 PM.
What's driving it
PM × Wind × Precip
PM2.5 at 9.0 µg/m³ (AQI 50) with a 0.87 fine-to-coarse ratio and 4 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.87
- Wind
- calm
- Recent rain
- 0h in last 6h
- Pattern
- stagnant smoke
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).
If the first of July be rainy weather, 'twill rain more or less for four weeks together.
- Moonrise
- 11:39 PM
- Moonset
- 11:38 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Barnwell at a glance
- Today vs. normal: 80°F — typical for the season
- Last frost: March 6 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 29812
16-Day Forecast — Barnwell
- Sun99°75°21%
- Mon98°78°23%
- Tue98°75°25%
- Wed102°77°21%
- Thu98°78°12%
- Fri101°76°12%
- Sat104°76°34%
- Sun102°80°39%
- Mon97°75°38%
- Tue100°72°19%
- Wed107°70°13%
- Thu90°73°47%
- Fri90°70°51%
- Sat94°72°65%
- Sun99°76°35%
- Mon98°78°35%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 5, 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 — Barnwell
SPC includes Barnwell in the general thunderstorm area today — no severe risk, but storms are possible.
- TODAYTSTMGeneral Thunderstorms
- TOMORROWTSTMGeneral Thunderstorms
- DAY 3TSTMGeneral Thunderstorms
Thunderstorms possible. Not severe, but capable of producing lightning and brief heavy rain.
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 Barnwell
- 29812
- 29813