Princeton, South Carolina Weather
Thunderheads boil and break at dusk. Day 16 of summer. Read this microseason across nine climate regions →
Princeton weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJul 6Overcast22%—94°72°—
- TuesdayJul 7Overcast11%—93°74°-1°
- WednesdayJul 8Overcast——100°73°+7°
- ThursdayJul 9Drizzle——96°71°-4°
- FridayJul 10Light Drizzle——100°73°+4°
- SaturdayJul 11Partly Cloudy23%—98°75°-2°
- SundayJul 12Overcast34%—96°75°-2°
AQI 52 (Moderate), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 14.3 µg/m³ (AQI 61) with a 0.99 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in stagnant air, not road dust.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
PM × Wind × Precip
PM2.5 at 14.3 µg/m³ (AQI 61) with a 0.99 fine-to-coarse ratio and 3 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.99
- 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).
When the stars begin to huddle, the earth will soon become a puddle.
- Moonrise
- 12:09 AM
- Moonset
- 12:45 PM
- In sign
- ♓︎ Pisces
Thunderheads boil and break at dusk
Princeton at a glance
- Today vs. normal: 77°F — typical for the season
- Last frost: March 14 (climatological average for this latitude)
- Microseason: Jul 6–10
- Planting window: Sow fall broccoli and cabbage indoors for transplant in 4 weeks.
16-Day Forecast — Princeton
- Mon94°72°22%
- Tue93°74°11%
- Wed100°73°7%
- Thu96°71°6%
- Fri100°73°5%
- Sat98°75°23%
- Sun96°75°34%
- Mon96°68°34%
- Tue96°66°13%
- Wed102°68°14%
- Thu86°68°14%
- Fri87°67°51%
- Sat88°69°61%
- Sun92°68°52%
- Mon88°67°38%
- Tue91°69°47%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of July 6, 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 — Princeton
SPC includes Princeton 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 Princeton
- 29654