Rock Hill, South Carolina Weather
Thunder quiets the land. Day 93 of summer. Read this microseason across nine climate regions →
Rock Hill weather forecast — hour by hour, 7-day outlook, NOAA radar
Conditions updated 10:27 AM EDT · Open-Meteo
- TodaySep 21Clear——93°68°—
- TuesdaySep 22Clear80%0.11″88°69°-5°
- WednesdaySep 23Heavy Rain80%0.70″72°60°-16°
- ThursdaySep 24Light Rain36%0.18″64°58°-8°
- FridaySep 25Overcast——75°54°+11°
- SaturdaySep 26Overcast——78°52°+3°
- SundaySep 27Overcast——80°58°+2°
Air quality now AQI 48 · Good
AQI 48 (Good), driven by PM2.5. AQI flat over the last 6 hours (within ±3 points). PM2.5 at 11.4 µg/m³ (AQI 55) with a 0.95 fine-to-coarse ratio and 2 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 41 now. With UV 3.5 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 19.
- Present
- AQI 41
- UV peak
- 3.5 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 19
PM × Wind × Precip
PM2.5 at 11.4 µg/m³ (AQI 55) with a 0.95 fine-to-coarse ratio and 2 mph wind — combustion smoke trapped in stagnant air, not road dust.
- PM2.5/PM10
- 0.95
- 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
- 4:43 PM
- Moonset
- 2:00 AM
- In sign
- ♑︎ Capricorn
Thunder quiets the land
Read this microseason across nine climate regions →
All 72 microseasons on the year wheel →
Rock Hill at a glance
- Today vs. normal: Today averages 81°F (high 93°F, low 68°F), 10°F above the 71°F normal for Sep 21
- Last frost: March 27 (1991–2020 median, NOAA station 1 km away)
- Microseason: Sep 21–25
- Planting calendar: September — plant garlic (overwinter); harvest tomatoes, peppers, beans, summer squash, winter squash
16-Day Forecast — Rock Hill
- Mon93°68°9%
- Tue88°69°80%
- Wed72°60°80%
- Thu64°58°36%
- Fri75°54°4%
- Sat78°52°1%
- Sun80°58°3%
- Mon83°60°4%
- Tue82°62°5%
- Wed82°61°20%
- Thu83°65°13%
- Fri86°65°16%
- Sat84°67°16%
- Sun72°67°16%
- Mon72°59°14%
- Tue67°52°23%
Forecast data from Open-Meteo (CC BY 4.0).
Live wind & temperature near Rock Hill
Interactive wind and temperature map centered on Rock Hill — 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 5) 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 — Rock Hill
SPC has placed Rock Hill 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 Rock Hill
Rock Hill sits in York 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 159 miles to the SSE. The nearest town Rock Hill tracks is Spartanburg, roughly 51 miles to the W.
Air quality in Rock Hill
Air quality in Rock Hill’s county has trended dirtier since 2020; its cleanest year on record was 2020 (median AQI 39). See the full air-quality history for Rock Hill.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| March | lettuce, peas, spinach, radishes | radishes |
| April | lettuce, spinach, radishes, tomatoes, peppers, beans, squash | lettuce, 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, winter 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
Rock Hill peaks at about 80°F in July and bottoms near 41°F in January; August brings the heaviest rain (5.0 inches) and October the least (2.3 inches).
| Month | Mean temp | Precip |
|---|---|---|
| January | 41° | 4.2″ |
| February | 45° | 3.8″ |
| March | 52° | 4.1″ |
| April | 61° | 3.3″ |
| May | 69° | 3.2″ |
| June | 77° | 3.6″ |
| July | 80° | 4.4″ |
| August | 79° | 5.0″ |
| September | 73° | 3.3″ |
| October | 63° | 2.3″ |
| November | 52° | 3.4″ |
| December | 44° | 4.3″ |
Regional context
Similar climates India Hook, SC, Newport, SC, Riverview, SC
Per modelled 1991-2020 normals (EC_Earth3P_HR model via Open-Meteo), Rock Hill runs from a 41°F January mean to 80°F in July, a 39°F seasonal spread, with near 45 inches of precipitation.
Rock Hill's precipitation spreads evenly across the seasons: August peaks at 5.0 inches, while October holds 2.3 inches — no season dominates Rock Hill's rain calendar. That lines Rock Hill up with places like India Hook, SC, Newport, SC and Riverview, SC, fed by overlapping storm tracks.
Once Rock Hill passes March 27, freezes fade and Rock Hill's beds take peas, lettuce, spinach, and radishes. Tomatoes and peppers do best set out two weeks later in Rock Hill, once nights clear the mid-40s°F. The season ends by November 5 in Rock Hill, once hard frosts set back in. That date is a median: Rock Hill freezes sooner in half of years.
Similar climates: India Hook, SC, Newport, SC, Riverview, SC, Lesslie, SC, Baxter Village, SC.
Frequently asked
- When does it freeze in Rock Hill?
- In Rock Hill, expect the last spring frost near March 27; Rock Hill's first autumn frost comes around November 5.
- What is the rainy season in Rock Hill?
- August is the wettest month in Rock Hill, about 5.0 inches on average; the year totals roughly 45 inches.
- What is the warmest month in Rock Hill?
- The warmest stretch in Rock Hill comes in July, around 80°F on average.
- What is the coldest month in Rock Hill?
- On average January is the chilliest month in Rock Hill, about 41°F.
- When can I start a vegetable garden in Rock Hill?
- Rock Hill's last frost (March 27) cues hardy greens; in Rock Hill, hold heat-lovers two weeks past.
- What hardiness zone is Rock Hill?
- Rock Hill's hardiness zone tracks its winter low; with January near 41°F, check the USDA ZIP map for the exact zone.
- What is the 10-day forecast for Rock Hill?
- Rock Hill'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 Rock Hill?
- See this week's day-by-day rain chances for Rock Hill in the daily forecast above, and the next 24 hours in the hourly chart.
- What is the weather like right now in Rock Hill?
- Current conditions for Rock Hill and the next 24 hours — temperature, precipitation chance, and wind by the hour — are in the hourly forecast chart above.
- How often is the Rock Hill forecast updated?
- The Rock Hill forecast on this page is built from Open-Meteo weather-model data and refreshes regularly through the day.
- When are sunrise and sunset in Rock Hill?
- Today's sunrise and sunset times for Rock Hill 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 Rock Hill?
- The next few days in Rock Hill's forecast are the most reliable; accuracy declines beyond about a week as weather-model uncertainty grows.
Rock Hill sits at 34.9°N; its climate zone is humid subtropical (Köppen approximation).
ZIP codes in Rock Hill
- 29730
- 29731
- 29732
- 29733