Hilton Head Island, South Carolina Weather
Sun climbs to its northern throne. Day 88 of spring. Read this microseason across nine climate regions →
Hilton Head Island weather forecast — hour by hour, 7-day outlook, NOAA radar
- TodayJun 15Thunderstorm——93°74°—
- TuesdayJun 16Light Drizzle56%0.02″85°76°-8°
- WednesdayJun 17Thunderstorm56%—88°70°+3°
- ThursdayJun 18Light Drizzle45%—93°71°+5°
- FridayJun 19Thunderstorm50%—91°72°-2°
- SaturdayJun 20Light Drizzle32%—81°71°-10°
- SundayJun 21Overcast10%—88°71°+7°
AQI 36 (Good), driven by Ozone. AQI flat over the last 6 hours (within ±3 points). Ozone at AQI 47 now. With UV 8.4 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 37 around 1 PM.
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 8.4 peaking around 1 PM under partly cloudy skies, surface ozone likely climbs to AQI 37 around 1 PM.
- Present
- AQI 47
- UV peak
- 8.4 at 1 PM
- Sky at peak
- partly cloudy
- Projected peak
- AQI 37
PM × Wind × Precip
PM2.5 at 8.0 µg/m³, PM10 at 8.6 µg/m³ — typical background levels with no transport signature.
- PM2.5/PM10
- 0.93
- Wind
- breezy
- Recent rain
- 0h in last 6h
- Pattern
- background
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
- 6:24 AM
- Moonset
- 8:38 PM
- In sign
- ♋︎ Cancer
Sun climbs to its northern throne
Hilton Head Island at a glance
- Today vs. normal: 83°F — typical for the season
- Last frost: February 28 (climatological average for this latitude)
- Microseason: Jun 11–15
- Planting window: Stake and prune tomato suckers. Watch for squash vine borers.
16-Day Forecast — Hilton Head Island
- Mon93°74°7%
- Tue85°76°56%
- Wed88°70°56%
- Thu93°71°45%
- Fri91°72°50%
- Sat81°71°32%
- Sun88°71°10%
- Mon98°76°10%
- Tue90°73°20%
- Wed80°71°37%
- Thu84°71°37%
- Fri89°67°56%
- Sat95°69°59%
- Sun94°72°49%
- Mon90°75°43%
- Tue92°78°41%
Forecast data from Open-Meteo (CC BY 4.0).
Right now in the garden
Peak growing season
As of June 15, 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 — Hilton Head Island
SPC has placed Hilton Head Island in the General Thunderstorms category for severe thunderstorms today.
- 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 Hilton Head Island
- 29928
- 29926
- 29925
- 29938