Barnwell County, SC Weather Forecast
County weather hub
Mostly Sunny then Slight Chance Showers And Thunderstorms
Compare major city weather across Barnwell County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
A slight chance of showers and thunderstorms between 4pm and 5pm. Mostly sunny, with a high near 95. Heat index values as high as 102. West wind 6 to 9 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
County Weather Overview
This county weather page brings together forecast coverage for Barnwell County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 3 of 3 mapped cities in Barnwell County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Jul 11 to Jul 17, 2026
- Latest sync
- Jul 11, 2026 11:28 AM EDT
- Forecast office
- CAE
- Source
- NOAA / NWS
Daily Outlook
This Week in Barnwell County
Today looks like the warmest upcoming period in Barnwell County at 95 degrees F.
Monday Night is the coolest period ahead with temperatures near 70 degrees F.
The strongest winds are forecast for Today at about 6 to 9 mph W.
Precipitation is mentioned in 14 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 11, 2026 11:28 AM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- CAE
- Radar station
- KCLX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
A slight chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 75. Heat index values as high as 102. West wind 1 to 7 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
Showers and thunderstorms likely after 4pm. Mostly sunny, with a high near 95. Heat index values as high as 103. West wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch possible.
Showers and thunderstorms likely before 8pm, then showers and thunderstorms. Mostly cloudy, with a low around 71. Heat index values as high as 100. West wind 0 to 3 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
A chance of rain showers before 11am, then showers and thunderstorms between 11am and 5pm, then showers and thunderstorms. Mostly cloudy, with a high near 89. East wind around 2 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and thunderstorms before 8pm, then showers and thunderstorms likely. Mostly cloudy, with a low around 70. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
A slight chance of rain showers before 8am, then showers and thunderstorms likely. Mostly cloudy, with a high near 89. Chance of precipitation is 60%.
Showers and thunderstorms likely before 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 92.
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 73.
A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 94.
A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 75.
A chance of showers and thunderstorms after 2pm. Sunny, with a high near 94. Chance of precipitation is 30%.
A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 74.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jul 11
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
95°F |
6 to 9 mph
W
|
|
Tonight
Jul 11
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
75°F |
1 to 7 mph
W
|
|
Sunday
Jul 12
|
Mostly Sunny then Showers And Thunderstorms Likely
|
95°F |
5 mph
W
|
|
Sunday Night
Jul 12
|
Showers And Thunderstorms Likely then Showers And Thunderstorms
|
71°F |
0 to 3 mph
W
|
|
Monday
Jul 13
|
Showers And Thunderstorms
|
89°F |
2 mph
E
|
|
Monday Night
Jul 13
|
Showers And Thunderstorms then Showers And Thunderstorms Likely
|
70°F |
1 mph
NE
|
|
Tuesday
Jul 14
|
Showers And Thunderstorms Likely
|
89°F |
2 mph
NE
|
|
Tuesday Night
Jul 14
|
Showers And Thunderstorms Likely
|
71°F |
1 mph
NE
|
|
Wednesday
Jul 15
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
92°F |
2 mph
W
|
|
Wednesday Night
Jul 15
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
73°F |
1 mph
W
|
|
Thursday
Jul 16
|
Sunny then Slight Chance Showers And Thunderstorms
|
94°F |
0 to 3 mph
W
|
|
Thursday Night
Jul 16
|
Slight Chance Showers And Thunderstorms then Mostly Clear
|
75°F |
1 mph
NW
|
|
Friday
Jul 17
|
Sunny then Chance Showers And Thunderstorms
|
94°F |
0 to 3 mph
W
|
|
Friday Night
Jul 17
|
Chance Showers And Thunderstorms
|
74°F |
2 mph
W
|
Major City Forecasts
Live forecast snapshots for major cities across Barnwell County.
Coverage
Forecast coverage currently spans 3 of 3 mapped cities in Barnwell County.
Largest mapped city population in this region: 5,076.
