Jefferson, South Carolina Weather
Cicadas claim the scorching afternoon. Day 15 of summer. Read this microseason across nine climate regions →
Jefferson weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 5Overcast15%—98°75°—
- MondayJul 6Overcast42%—97°76°-1°
- TuesdayJul 7Light Drizzle42%—97°75°0°
- WednesdayJul 8Overcast32%—102°75°+5°
- ThursdayJul 9Overcast12%—102°76°0°
- FridayJul 10Partly Cloudy13%—105°75°+3°
- SaturdayJul 11Light Drizzle44%—104°77°-1°
AQI 28 (Good), driven by PM2.5. AQI projected to climb to 53 over the next 6 hours. PM2.5 at 9.4 µg/m³ (AQI 52) with a 0.87 fine-to-coarse ratio and 5 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 9 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 47 now. With UV 5.9 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 37 around 1 PM.
- Present
- AQI 47
- UV peak
- 5.9 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 37
PM × Wind × Precip
PM2.5 at 9.4 µg/m³ (AQI 52) with a 0.87 fine-to-coarse ratio and 5 mph wind — combustion smoke trapped in calm air, not road dust.
- PM2.5/PM10
- 0.87
- Wind
- light
- 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
- 11:35 PM
- Moonset
- 11:33 AM
- In sign
- ♓︎ Pisces
Cicadas claim the scorching afternoon
Jefferson at a glance
- Today vs. normal: 13°F above the seasonal normal for this latitude
- Last frost: March 15 (climatological average for this latitude)
- Microseason: Jul 1–5
- Planting window: Harvest early potatoes. Begin drying onions on the surface.
ZIP code: 29718
16-Day Forecast — Jefferson
- Sun98°75°15%
- Mon97°76°42%
- Tue97°75°42%
- Wed102°75°32%
- Thu102°76°12%
- Fri105°75°13%
- Sat104°77°44%
- Sun102°80°44%
- Mon101°73°30%
- Tue99°72°15%
- Wed109°71°14%
- Thu95°69°22%
- Fri88°75°29%
- Sat94°72°32%
- Sun101°75°26%
- Mon95°79°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 — Jefferson
SPC has placed Jefferson in the Marginal Risk category for severe thunderstorms today.
- TODAYMRGLMarginal Risk
- TOMORROWTSTMGeneral Thunderstorms
- 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 Jefferson
- 29718