Spartanburg, South Carolina Weather
Thunder quiets the land. Day 93 of summer. Read this microseason across nine climate regions →
Spartanburg weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 10:27 AM EDT · Open-Meteo
- TodaySep 21Clear——87°67°—
- TuesdaySep 22Clear72%3.1″83°70°-4°
- WednesdaySep 23Drizzle72%0.06″70°59°-13°
- ThursdaySep 24Light Showers41%0.18″64°58°-6°
- FridaySep 25Overcast——76°54°+12°
- SaturdaySep 26Overcast——78°54°+2°
- SundaySep 27Overcast——81°60°+3°
Air quality now AQI 54 · Moderate
AQI 54 (Moderate), driven by PM2.5. AQI projected to climb to 71 over the next 6 hours. PM2.5 at 10.3 µg/m³ (AQI 53) with a 0.96 fine-to-coarse ratio and 1 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 during the projected peak around 7 PM.
What's driving it
Ozone × UV × Sky
Ozone at AQI 39 now. With UV 3.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 18.
- Present
- AQI 39
- UV peak
- 3.4 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 18
PM × Wind × Precip
PM2.5 at 10.3 µg/m³ (AQI 53) with a 0.96 fine-to-coarse ratio and 1 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.96
- 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).
September dries up ditches or breaks down bridges.
- Moonrise
- 4:46 PM
- Moonset
- 2:03 AM
- In sign
- ♑︎ Capricorn
Thunder quiets the land
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Spartanburg at a glance
- Today vs. normal: Today averages 77°F (high 87°F, low 67°F), 7°F above the 70°F normal for Sep 21
- Last frost: April 8 (1991–2020 median, NOAA station 4 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, winter squash
16-Day Forecast — Spartanburg
- Mon87°67°9%
- Tue83°70°72%
- Wed70°59°72%
- Thu64°58°41%
- Fri76°54°2%
- Sat78°54°1%
- Sun81°60°2%
- Mon84°64°4%
- Tue82°62°7%
- Wed82°62°18%
- Thu84°66°18%
- Fri85°65°16%
- Sat84°67°13%
- Sun73°67°23%
- Mon71°62°13%
- Tue67°51°26%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Spartanburg
Interactive wind and temperature map centered on Spartanburg — it loads in your browser. Open the full weather map.
Right now in the garden
Fall planting + final harvests
As of September 21, the season's first frost (typically November 1) is approaching. Pick what frost-tender plants still carry before the next cold front. This city's planting calendar for September: plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, and winter squash.
SPC Convective Outlook
Storm Prediction Center — Spartanburg
SPC has placed Spartanburg 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.
Sun & seasons in Spartanburg
Spartanburg sits in Spartanburg County, where the year’s longest day runs 14h 30m of daylight and its shortest just 9h 48m — a swing of +4h 42m between the June and December solstices. Clocks spring forward on Sunday, March 8, 2026 and fall back on Sunday, November 1, 2026.
Charleston, the state’s largest city, lies about 185 miles to the SE. The nearest town Spartanburg tracks is Mauldin, roughly 24 miles to the WSW.
Air quality in Spartanburg
Air quality in Spartanburg’s county has trended dirtier since 2020; its cleanest year on record was 2020 (median AQI 45). See the full air-quality history for Spartanburg.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| March | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | spinach, radishes |
| May | tomatoes, peppers, beans, squash | lettuce, peas, spinach, radishes |
| June | beans, squash | lettuce, peas, spinach, beans, summer squash, garlic |
| July | tomatoes, peppers, beans, squash | tomatoes, peppers, beans, summer squash, garlic |
| August | beans, squash, fall brassicas, carrots | tomatoes, peppers, beans, summer squash, winter squash |
| September | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash |
| October | garlic (overwinter) | tomatoes, peppers, beans, summer squash, winter squash, fall brassicas, carrots |
| November | — | fall brassicas, carrots |
A year in weather
Spartanburg peaks at about 79°F in July and bottoms near 39°F in January; March brings the heaviest rain (4.7 inches) and October the least (2.3 inches).
| Month | Mean temp | Precip |
|---|---|---|
| January | 39° | 4.1″ |
| February | 43° | 3.9″ |
| March | 50° | 4.7″ |
| April | 59° | 3.6″ |
| May | 68° | 3.1″ |
| June | 76° | 3.5″ |
| July | 79° | 3.8″ |
| August | 77° | 4.4″ |
| September | 72° | 3.9″ |
| October | 62° | 2.3″ |
| November | 50° | 3.6″ |
| December | 42° | 4.6″ |
Regional context
Similar climates Arkwright, SC, Drayton, SC, Whitney, SC
Spartanburg's climate, from modelled 1991-2020 normals (EC_Earth3P_HR model via Open-Meteo), pairs 39°F Januarys with 79°F Julys — a 39°F swing. About 45.5 inches of precipitation falls each year.
Rainfall in Spartanburg splits evenly between the seasons: March tops out at 4.7 inches, and October logs 2.3 inches — neither half of Spartanburg's year dominates. That even rhythm groups Spartanburg with places like Arkwright, SC, Drayton, SC and Whitney, SC.
The cool-season window in Spartanburg starts at April 8, when nights stop freezing — think peas, lettuce, spinach, and radishes. Hold Spartanburg's tender crops — tomatoes, peppers, basil — until 10-14 days past Spartanburg's last frost. It shuts near November 1, when freezes return to Spartanburg and tender plants need cover. In about half of years, Spartanburg's last freeze comes after April 8.
Similar climates: Arkwright, SC, Drayton, SC, Whitney, SC, Ben Avon, SC, Hilltop, SC.
Frequently asked
- When does it freeze in Spartanburg?
- Spartanburg's last spring frost lands near April 8, and in Spartanburg the first fall frost follows around November 1.
- What is the rainy season in Spartanburg?
- Rainfall in Spartanburg peaks in March near 4.7 inches, out of about 46 inches annually.
- What is the warmest month in Spartanburg?
- Spartanburg peaks in July, when the mean runs near 79°F.
- What is the coldest month in Spartanburg?
- January is Spartanburg's coldest month, averaging about 39°F.
- When can I start a vegetable garden in Spartanburg?
- In Spartanburg, sow peas and hardy greens around April 8; Spartanburg's tomatoes and peppers wait two weeks more.
- What hardiness zone is Spartanburg?
- With January around 39°F, Spartanburg's zone reflects that minimum — the USDA ZIP map confirms Spartanburg's band.
- What is the 10-day forecast for Spartanburg?
- Spartanburg's extended outlook — daily high and low temperatures and precipitation chances for each upcoming day — is in the daily forecast above.
- Will it rain this week in Spartanburg?
- See this week's day-by-day rain chances for Spartanburg in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Spartanburg?
- Current conditions for Spartanburg and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Spartanburg forecast updated?
- The Spartanburg forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Spartanburg?
- Today's sunrise and sunset times for Spartanburg are in the Almanac section above, along with civil dawn, civil dusk, and day length. Day length is longest near the summer solstice and shortest near the winter solstice.
- How accurate is the weather forecast for Spartanburg?
- The next few days in Spartanburg's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Spartanburg sits at 34.9°N; its climate zone is humid subtropical (Köppen approximation).
ZIP codes in Spartanburg
- 29301
- 29302
- 29303
- 29304
- 29306
- 29307
- 29319