Point Forecast: Saint Helena Island SC
 32.39N 80.57W (Elev. 20 ft)
Last Update: 1:43 pm EDT Jul 13, 2025
Tabular Forecast
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Weather ElementsWeather/PrecipitationFire Weather
Temperature (°F)
Dewpoint (°F)
Heat Index (°F)

Surface Wind  
Sky Cover (%)
Precipitation Potential (%)
Relative Humidity (%)
Rain
Thunder
Fog
Mixing Height  
Trans. Wind  
20ft Wind  
Vent Rate (x1000 mph-ft)
Dispersion Index
Davis Stability Index
Atmospheric Dispersion Index
Low Visibility Occurrence Risk Index
Turner Stability Index

48-Hour Period Starting:       Back 2 Days  

Date07/1307/14
Hour (EDT)192021222300010203040506070809101112131415161718
Temperature (°F)858280808079797877777676777982858788898989908986
Dewpoint (°F)777776767676767676767676767776767676757675757676
Heat Index (°F)969086868679797877777676777989949899991009910110096
Surface Wind (mph)322221111111222235666776
Wind DirSSSEESSSWSWNENENNENENENEEEEEEEESEE
Gust
Sky Cover (%)574142345345373025332744293124252835485354585759
Precipitation Potential (%)3518121199128864469891319243031373538
Relative Humidity (%)77858888889191949797100100979482757068646664626672
RainChcSChc------------------------------SChcSChcChcChcChcChcChc
ThunderChcSChc------------------------------SChcSChcChcChcChcChcChc

Date07/15
Hour (EDT)192021222300010203040506070809101112131415161718
Temperature (°F)858181818079797877777777788082858788888888898886
Dewpoint (°F)767676767777777776757575767676757575757575757575
Heat Index (°F)948787878779797877777777788689949698989898999895
Surface Wind (mph)653222222222335567899998
Wind DirEEEEEEEEEEEEEEEEEESESESESESESE
Gust
Sky Cover (%)584442373127242117131215215454545454546363636363
Precipitation Potential (%)379999997777773131313131314545454545
Relative Humidity (%)758585859194949797949494948882726866666666646670
RainChc------------------------ChcChcChcChcChcChcChcChcChcChcChc
ThunderChc------------------------SChcSChcSChcSChcSChcSChcChcChcChcChcChc

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