Hilton Head Island, SC Weather - Forecast & Monthly Averages

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TEMPERATURE	66
HUMIDITY	100
PRESSURE
WIND COND.

Weather Quick Facts

The highest monthly average temperature in Hilton Head Island for July is 82.4 degrees
The lowest monthly average temperature in Hilton Head Island for January is 49.9 degrees
The most monthly precipitation in Hilton Head Island occurs in August with 7.7 inches
The air quality index in Hilton Head Island is 7% better than the national average
The pollution index in Hilton Head Island is 48% better than the national average

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Hilton Head Island Average Temperature

In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
Month	Temp. _(min)	Temp. _(max)	Temp. _(avg)	Precipitation
January	40°F	62°F	50°F	2.8"
February	41°F	64°F	52°F	3.8"
March	48°F	71°F	59°F	4.2"
April	56°F	79°F	67°F	3.9"
May	64°F	85°F	74°F	3.5"
June	71°F	90°F	80°F	4.8"
July	74°F	93°F	82°F	4.8"
August	74°F	91°F	82°F	7.7"
September	69°F	87°F	77°F	4.7"
October	59°F	79°F	68°F	3.9"
November	47°F	70°F	58°F	2.1"
December	44°F	66°F	54°F	3.3"

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Hilton Head Island air quality index & pollution index

In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
Index	Hilton Head Island	South Carolina	National
Air quality index	39	37	42
Pollution index	1,428,370	3,620,438	2,726,193

Hilton Head Island air quality

Measurement	Total
Days measured	365
Days with good air quality	295
Days with moderate air quality	70
Days w/ poor A.Q. for sensitive groups	0
Days with unhealthy air quality	0

Air quality details

Pollutant	Total
Arsenic	0.020%
Benzene	0.020%
Carbon Tetrachloride	0.002%
Lead	0.040%
Mercury	0.000%

Average monthly Hilton Head Island temperature with heat index

Hilton Head Island monthly precipitation with daily maximum

Hilton Head Island monthly snow depth with daily maximum

Hilton Head Island monthly wind speed information

Nearby cities with good air quality

City	Population	Air Quality Index	National Avg.
Bluffton, SC	23,896	39	22.0%
Talahi Island, GA	1,262	39	22.0%
Port Royal, SC	13,654	39	22.0%
Wilmington Island, GA	16,119	39	22.0%
Shell Point, SC	3,074	39	22.0%
Hilton Head Island, SC	41,077	39	22.0%

Cities with similar population

City	Population	Air Quality Index	National Avg.
Marion, IA	41,096	39	22.0%
La Puente, CA	41,123	72	44.0%
Calexico, CA	41,129	58	16.0%
Montclair, CA	41,014	89	78.0%
Chelsea, MA	41,000	43	14.0%
Hilton Head Island, SC	41,077	39	22.0%

Source: The Hilton Head Island, SC weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.