Point Forecast: Johns Island SC
 32.73N 80.07W (Elev. 23 ft)
Last Update: 1:43 pm EDT Jul 13, 2025
Tabular Forecast
[hide menu]Get as XML
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)171819202122230001020304050607080910111213141516
Temperature (°F)898786838181808079797878777678798184868889898990
Dewpoint (°F)777777777676767675757575757575777676767575767676
Heat Index (°F)1029997928787868679797878777678798793969899100100102
Surface Wind (mph)665322222211222223566788
Wind DirSESESSSESEEESSESEENENEENEEEEEEEESE
Gust
Sky Cover (%)565757515654523725211414163141313235364351595551
Precipitation Potential (%)343636171610545544337878172226393227
Relative Humidity (%)687275828585888888889191949791948577726664666664
RainChcChcChcSChcSChc--------------------------SChcSChcChcChcChcChc
ThunderChcChcChcSChcSChc--------------------------SChcSChcChcChcChcChc

Date07/15
Hour (EDT)171819202122230001020304050607080910111213141516
Temperature (°F)898785828180807979787777777778798183858687888888
Dewpoint (°F)767676767575767575757574757576767676767676767676
Heat Index (°F)1009894898785867979787777777778798791949698999999
Surface Wind (mph)876653332222222356789101010
Wind DirSESEEEEEEESESESEEEEEEESESESESESESESE
Gust
Sky Cover (%)504838302929302927242017172230616161616161656565
Precipitation Potential (%)252420888888888888414141414141484848
Relative Humidity (%)667075828285888888919490949494918580757270686868
RainChcSChcSChc------------------------ChcChcChcChcChcChcChcChcChc
ThunderChcSChcSChc------------------------SChcSChcSChcChcChcChcChcChcChc

Additional Forecasts and Information
International System of UnitsForecast Discussion
7-Day ForecastHourly Weather Graph
Hazardous Weather OutlookPublic Information Statement
Coastal Waters ForecastOffshore Waters Forecast
Beach ForecastLake Moultrie Forecast
North Charleston Daily ClimateDowntown Charleston Daily Climate
Savannah Daily ClimatePast Weather Information
Weather Briefing