Hilltop, South Carolina Weather
Fireflies pulse through the magnolias. Day 77 of spring. Read this microseason across nine climate regions →
Hilltop weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 4Clear——85°53°—
- FridayJun 5Overcast——90°60°+5°
- SaturdayJun 6Overcast——89°64°-1°
- SundayJun 7Overcast——87°67°-2°
- MondayJun 8Drizzle25%—91°70°+4°
- TuesdayJun 9Light Drizzle27%0.08″70°58°-21°
- WednesdayJun 10Overcast15%—81°59°+11°
Ozone at AQI 98 now. AQI up 8 over the last 6 hours (gradual rise). With UV 8.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 110 by mid-afternoon.
OK No precautions needed for the general population; unusually sensitive individuals may consider limiting prolonged outdoor exertion.
What's driving it
Ozone × UV × Sky
Ozone at AQI 98 now. With UV 8.4 peaking around 1 PM under clear skies, surface ozone likely climbs to AQI 110 by mid-afternoon.
- Present
- AQI 98
- UV peak
- 8.4 at 1 PM
- Sky at peak
- clear
- Projected peak
- AQI 110
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).
A summer fog for fair, a winter fog for rain.
- Moonrise
- 3:41 AM
- Moonset
- 1:43 PM
- In sign
- ♒︎ Aquarius
Fireflies pulse through the magnolias
Hilltop at a glance
- Today vs. normal: 3°F above the seasonal normal for this latitude
- Last frost: March 17 (climatological average for this latitude)
- Microseason: Jun 1–5
- Planting window: Harvest spring lettuce before it bolts. Sow heat-tolerant greens.
Right now in the garden
Peak growing season
As of June 4, 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.
Planting calendar
| Month | Plant | Harvest |
|---|---|---|
| January | — | — |
| February | — | — |
| March | lettuce, peas, spinach, radishes | — |
| April | lettuce, peas, spinach, radishes, tomatoes, peppers, beans, squash | — |
| May | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| June | tomatoes, peppers, beans, squash | lettuce, peas, radishes |
| July | — | tomatoes, beans, summer squash |
| August | — | tomatoes, beans, summer squash |
| September | — | tomatoes, beans, summer squash |
| October | fall brassicas, garlic (overwinter), carrots | winter squash, tomatoes (last) |
| November | fall brassicas, garlic (overwinter), carrots | — |
| December | — | — |
A year in weather
Hilltop's warmest month is July (~79°F mean) and its coldest is January (~43°F). Rainfall peaks in March (4.8 inches) and bottoms out in September (3.6 inches).
| Month | Mean temp | Precip | Rainy days |
|---|---|---|---|
| January | 43° | 4.3″ | 7 |
| February | 46° | 3.8″ | 7 |
| March | 53° | 4.8″ | 7 |
| April | 61° | 4.3″ | 7 |
| May | 69° | 3.9″ | 6 |
| June | 76° | 4.6″ | 7 |
| July | 79° | 4.0″ | 7 |
| August | 78° | 4.6″ | 6 |
| September | 73° | 3.6″ | 5 |
| October | 62° | 3.9″ | 5 |
| November | 51° | 3.7″ | 6 |
| December | 45° | 4.7″ | 7 |
Regional context
Hilltop sits within a humid subtropical climate region — a cohort that shares similar temperature ranges, seasonal patterns, and growing conditions across nearby cities.
Similar climates: Charleston, SC, Columbia, SC, Greenville, SC, Myrtle Beach, SC, Rock Hill, SC.
Frequently asked
- When does it freeze in Hilltop?
- Hilltop's last spring frost typically falls around mid-March, and the first fall frost arrives around mid-December.
- What is the rainy season in Hilltop?
- March is the wettest month with about 4.8 inches of rain on average; the city receives roughly 50 inches annually.
- What is the warmest month in Hilltop?
- July is typically warmest, averaging about 79°F.
- What is the coldest month in Hilltop?
- January is typically coldest, averaging about 43°F.
- When can I start a vegetable garden in Hilltop?
- Cool-season crops (peas, lettuce) can be sown around the last spring frost (mid-March); warm-season crops (tomatoes, peppers) wait until 1–2 weeks after.
- How many rainy days does Hilltop get?
- Hilltop averages about 77 rainy days per year.
- What hardiness zone is Hilltop?
- Hilltop's USDA hardiness zone is determined by its lowest average winter temperature; check the USDA's online lookup with the city ZIP for the current zone designation.
Climate
Hilltop, South Carolina sits in a humid subtropical climate zone. January means hover near 43°F while July averages 79°F — a 37°F seasonal swing.
Across the year, Hilltop receives about 50 inches of precipitation spread over roughly 77 rainy days.
The rhythm of the year is set by latitude (35.0°N), proximity to large water bodies, and elevation — all of which shape what grows here, when frost is likely, and what the weather story looks like day to day.