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Johnston, SC
 78° 
Last Updated on Aug 20 2018, 8:53 pm EDT
Current ConditionsA Few Clouds
Relative Humidity90%
WindSouth at 4.6 MPH
(4 KT)
Pressure30.06 mb
Dewpoint75.0 F (23.9 C)
Visibility10.00 miles

7-Day Forecast

Tonight
Chance T-storms
Low: 72°
A chance of showers and thunderstorms, mainly before 11pm.
Mostly cloudy with a low around 72.
Southwest wind around 7 mph.
Chance of precipitation is 40%.
New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.


Tuesday
Chance Showers then Chance T-storms
High: 89°
A slight chance of showers and thunderstorms before 11am,
then a chance of showers
between 11am and noon,
then a chance of showers and thunderstorms after noon.
Partly sunny with a high near 89.
Southwest wind 7 to 11 mph.
Chance of precipitation is 50%.
New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.


Tuesday Night
Chance T-storms then Chance Showers
Low: 71°
A chance of showers and thunderstorms, mainly before 1am.
Mostly cloudy with a low around 71.
Southwest wind 7 to 9 mph.
Chance of precipitation is 30%.
New rainfall amounts
between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.


Wednesday
Mostly Sunny then Slight Chance T-storms
High: 89°
A slight chance of showers and thunderstorms after noon.
Mostly sunny with a high near 89.
West wind around 8 mph.
Chance of precipitation is 20%.


Wednesday Night
Partly Cloudy
Low: 68°
Partly cloudy with a low around 68.
West wind around 5 mph becoming light and variable after midnight.


Thursday
Mostly Sunny
High: 86°
Mostly sunny with a high near 86.


Thursday Night
Partly Cloudy
Low: 67°
Partly cloudy with a low around 67.


Friday
Mostly Sunny
High: 85°
Mostly sunny with a high near 85.


Friday Night
Partly Cloudy
Low: 67°
Partly cloudy with a low around 67.


Saturday
Chance T-storms
High: 87°
A chance of showers and thunderstorms.
Mostly sunny with a high near 87.
Chance of precipitation is 30%.


Saturday Night
Partly Cloudy
Low: 69°
Partly cloudy with a low around 69.


Sunday
Chance T-storms
High: 89°
A chance of showers and thunderstorms.
Mostly sunny with a high near 89.
Chance of precipitation is 30%.


Sunday Night
Partly Cloudy
Low: 70°
Partly cloudy with a low around 70.


Monday
Mostly Sunny
High: 89°
Mostly sunny with a high near 89.


Source: National Weather Service








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