Hilton Head Island, SC Weather

Hilton Head Island weather forecast

  • Temperature:81°F
  • Humidity:79%
  • Pressure:29.99inHg
  • Wind speed:3mph
  • Direction:
  • Gusts:n/a

Update from Beaufort, Marine Corps Air Station, SC on 2 Sep 6:56 PM EDT

Forecasted weather

Tonight

Chance Showers then Slight Chance T-storms

76°F 40% POP

Thursday

Slight Chance T-storms

87°F 20% POP

Thursday Night

Partly Cloudy

76°F

Friday

Mostly Sunny then Chance T-storms

89°F 30% POP

Friday Night

Chance T-storms

76°F 30% POP

Saturday

Chance T-storms

84°F 50% POP

Saturday Night

Chance Showers

75°F 50% POP

Sunday

Chance T-storms

84°F 50% POP

Sunday Night

Chance Showers

75°F 50% POP

Labor Day

Chance T-storms

83°F 50% POP

Monday Night

Chance Showers

74°F 40% POP

Tuesday

Chance T-storms

84°F 50% POP

Tuesday Night

Chance Showers

75°F 30% POP

Wednesday

Chance T-storms

86°F 30% POP

Hilton Head Island average temperature

MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
January28°F77°F53°Fn/a
February27°F77°F54°Fn/a
March32°F86°F60°Fn/a
April37°F90°F67°Fn/a
May52°F95°F74°Fn/a
June52°F102°F81°Fn/a
July70°F99°F83°Fn/a
August70°F100°F83°Fn/a
September55°F93°F79°Fn/a
October41°F88°F70°Fn/a
November32°F82°F60°Fn/a
December30°F79°F56°Fn/a
In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.

The highest average temperature in Hilton Head Island is August at 83.1 degrees. The coldest average temperature in Hilton Head Island is January at 52.9 degrees. The most monthly precipitation in Hilton Head Island occurs in January with 0 inches. The Hilton Head Island weather information is based on the average of the previous 3-7 years of data.

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Hilton Head Island air quality index & pollution index

IndexHilton Head IslandSouth CarolinaNational
Air quality index403750
Pollution index1,428,3703,259,2535,072,052
In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
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The Hilton Head Island, SC air quality index is a median value which considers the most hazardous air pollutants. The Hilton Head Island, SC air quality index is 8.8% greater than the South Carolina average and 19.5% less than the national average.

The Hilton Head Island, SC pollution index is the sum of the most hazardous air pollutants displayed in pounds. The Hilton Head Island, SC pollution index is 56.2% less than the South Carolina average and 71.8% less than the national average.

Air quality information

MeasurementTotal
Days measured365
Days with good air quality249
Days with moderate air quality106
Days w/ poor A.Q. for sensitive groups10
Days with unhealthy air quality

Air pollution information

PollutantTotal
Arsenic0.020%
Benzene0.020%
Carbon Tetrachloride0.002%
Lead0.040%
Mercury0.000%

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

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