Johnston, SC
Forecast for Johnston, SC | Forecast Periods: 14
Monday
Jun 30
2025
Johnston, SC
Updated: 9:21 PM EDT
72°F
Partly Cloudy
3 mph SW
Precipitation: 10%
Partly cloudy, with a low around 72. Southwest wind around 3 mph. New rainfall amounts less than a tenth of an inch possible.
24-Hour Temperature & Dewpoint Trend
- Temperature
- Dewpoint
- Humidity
- Precipitation
Hourly Forecast
7-Day Forecast
Monday
Mon, Jun 30
90°F
Mostly Sunny then Chance Showers And Thunderstorms
2 mph SW
Precipitation: 40%
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 90. Southwest wind 2 to 7 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Monday Night
Mon, Jun 30
71°F
Chance Showers And Thunderstorms
7 mph S
Precipitation: 38%
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 71. South wind around 7 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
Tuesday
Tue, Jul 1
89°F
Showers And Thunderstorms Likely
8 mph SW
Precipitation: 70%
A slight chance of rain showers between 8am and 11am, then showers and thunderstorms likely. Partly sunny, with a high near 89. Southwest wind around 8 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Tuesday Night
Tue, Jul 1
71°F
Showers And Thunderstorms Likely
3 mph SW
Precipitation: 70%
Showers and thunderstorms likely before 8pm, then showers and thunderstorms likely between 8pm and 2am, then a slight chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Southwest wind 3 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday
Wed, Jul 2
87°F
Chance Showers And Thunderstorms
5 mph SW
Precipitation: 52%
A chance of rain showers before 11am, then a chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Wed, Jul 2
70°F
Chance Showers And Thunderstorms
3 mph SW
Precipitation: 52%
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 70. Chance of precipitation is 50%.
Thursday
Thu, Jul 3
92°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
3 mph N
Precipitation: 20%
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92.
Thursday Night
Thu, Jul 3
71°F
Slight Chance Showers And Thunderstorms then Mostly Clear
3 mph SE
Precipitation: 20%
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 71.
Independence Day
Fri, Jul 4
93°F
Sunny then Slight Chance Showers And Thunderstorms
2 mph NE
Precipitation: 15%
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 93.
Friday Night
Fri, Jul 4
71°F
Slight Chance Showers And Thunderstorms then Mostly Clear
5 mph E
Precipitation: 15%
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 71.
Saturday
Sat, Jul 5
93°F
Sunny then Slight Chance Showers And Thunderstorms
2 mph E
Precipitation: 16%
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 93.
Saturday Night
Sat, Jul 5
70°F
Slight Chance Showers And Thunderstorms then Mostly Clear
3 mph E
Precipitation: 16%
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 70.
Sunday
Sun, Jul 6
91°F
Mostly Sunny then Slight Chance Showers And Thunderstorms
3 mph E
Precipitation: 21%
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 91.
Display Settings
Weather Insights
Temperature
The current temperature in Johnston is 72°F.
Wind
The wind in Johnston is currently blowing from the SW at 3 mph.
Humidity
Humidity data is not available for this period.
Precipitation
There is a 10% chance of precipitation.
Dew Point
Dewpoint data is not available for this period.