Charleston, SC 14-Day Forecast
South Carolina, United States 🇺🇸
84°
Sunny right now
Today: high 89°, low 78°
Updated just now
Charleston weather for the next 14 days
Friday, August 7
Sunny High 89° Low 80°Precipitation
40%
· 0.04 in
Max wind
11 mph
Humidity
73%
UV index
10 - Very High
Sunrise / sunset
06:37 AM / 08:13 PM
Saturday, August 8
Patchy rain nearby High 87° Low 79°Precipitation
76%
· 0.49 in
Max wind
12 mph
Humidity
74%
UV index
7 - High
Sunrise / sunset
06:38 AM / 08:12 PM
Sunday, August 9
Partly Cloudy High 88° Low 78°Precipitation
74%
· 0.34 in
Max wind
11 mph
Humidity
77%
UV index
7 - High
Sunrise / sunset
06:39 AM / 08:11 PM
Monday, August 10
Patchy rain nearby High 91° Low 78°Precipitation
79%
· 0.84 in
Max wind
14 mph
Humidity
78%
UV index
8 - Very High
Sunrise / sunset
06:39 AM / 08:10 PM
Tuesday, August 11
Sunny High 95° Low 77°Precipitation
63%
· 0.17 in
Max wind
12 mph
Humidity
74%
UV index
8 - Very High
Sunrise / sunset
06:40 AM / 08:09 PM
Wednesday, August 12
Sunny High 98° Low 82°Precipitation
36%
· 0.02 in
Max wind
14 mph
Humidity
65%
UV index
9 - Very High
Sunrise / sunset
06:41 AM / 08:08 PM
Thursday, August 13
Sunny High 98° Low 81°Precipitation
17%
· 0.01 in
Max wind
12 mph
Humidity
62%
UV index
9 - Very High
Sunrise / sunset
06:41 AM / 08:07 PM
Friday, August 14
Partly Cloudy High 94° Low 76°Precipitation
67%
· 0.22 in
Max wind
12 mph
Humidity
71%
UV index
8 - Very High
Sunrise / sunset
06:42 AM / 08:06 PM
Saturday, August 15
Sunny High 90° Low 75°Precipitation
79%
· 2.55 in
Max wind
9 mph
Humidity
82%
UV index
8 - Very High
Sunrise / sunset
06:43 AM / 08:05 PM
Sunday, August 16
Patchy rain nearby High 86° Low 74°Precipitation
39%
· 0.02 in
Max wind
8 mph
Humidity
79%
UV index
7 - High
Sunrise / sunset
06:43 AM / 08:04 PM
Monday, August 17
Partly Cloudy High 88° Low 78°Precipitation
57%
· 0.07 in
Max wind
12 mph
Humidity
73%
UV index
8 - Very High
Sunrise / sunset
06:44 AM / 08:03 PM
Tuesday, August 18
Patchy rain nearby High 93° Low 77°Precipitation
69%
· 0.17 in
Max wind
16 mph
Humidity
73%
UV index
8 - Very High
Sunrise / sunset
06:45 AM / 08:01 PM
Wednesday, August 19
Partly Cloudy High 88° Low 75°Precipitation
62%
· 0.09 in
Max wind
8 mph
Humidity
77%
UV index
8 - Very High
Sunrise / sunset
06:45 AM / 08:00 PM
Charleston 14-day outlook: the story
The warmest day of Charleston's 14-day outlook is Wednesday, August 12 with a high near 98°F (37°C); the coolest night comes Sunday, August 16, dipping to 74°F (23°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 91°F (33°C), about 5°F (3°C) above the typical August high of 86°F (30°C).
Precipitation is most likely on Thursday 6, Saturday 8, Sunday 9, Monday 10 and beyond; the wettest day looks like Saturday, August 15 with about 2.55 in (64.9 mm) expected. For the weekend, expect Saturday 87°F (31°C) and patchy rain nearby / Sunday 88°F (31°C) and partly cloudy.
For typical conditions month by month, see the Charleston climate & average temperatures guide.
Charleston forecast questions
Will it rain in Charleston this week?
The forecast currently shows meaningful precipitation chances on 10 of the next 14 days, peaking around Saturday, August 15.
What will be the warmest day in Charleston over the next 14 days?
Wednesday, August 12, with a forecast high near 98°F (37°C).
How accurate is a 14-day forecast for Charleston?
Days 1-3 are highly reliable, days 4-7 capture the overall pattern well, and days 8-14 indicate trends rather than exact figures - check back as the date approaches; this page refreshes throughout the day.
Average temperatures in Charleston by month
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 58° | 44° | 10 | 3.2 in | 7.6 h/day | 73% |
| February | 62° | 48° | 9 | 3.3 in | 8.0 h/day | 76% |
| March | 67° | 53° | 9 | 3.0 in | 8.9 h/day | 72% |
| April | 73° | 59° | 8 | 4.3 in | 10.8 h/day | 70% |
| May | 80° | 67° | 11 | 3.5 in | 11.5 h/day | 73% |
| June | 85° | 74° | 16 | 4.8 in | 11.6 h/day | 77% |
| July | 88° | 77° | 17 | 4.9 in | 11.5 h/day | 78% |
| August | 86° | 76° | 19 | 7.0 in | 10.7 h/day | 81% |
| September | 83° | 72° | 14 | 5.9 in | 9.9 h/day | 79% |
| October | 76° | 63° | 7 | 3.7 in | 9.3 h/day | 75% |
| November | 67° | 53° | 8 | 3.2 in | 8.2 h/day | 75% |
| December | 62° | 49° | 9 | 4.8 in | 7.0 h/day | 77% |
14-day forecasts nearby