Charleston, SC 14-Day Forecast
South Carolina, United States 🇺🇸
87°
Partly Cloudy right now
Today: high 98°, low 80°
Updated 4 hours ago
Charleston weather for the next 14 days
Tuesday, August 18
Sunny High 103° Low 82°Precipitation
7%
· 0.0 in
Max wind
12 mph
Humidity
62%
UV index
9 - Very High
Sunrise / sunset
06:45 AM / 08:01 PM
Wednesday, August 19
Sunny High 101° Low 80°Precipitation
4%
· 0.0 in
Max wind
12 mph
Humidity
56%
UV index
9 - Very High
Sunrise / sunset
06:45 AM / 08:00 PM
Thursday, August 20
Sunny High 95° Low 79°Precipitation
4%
· 0.0 in
Max wind
12 mph
Humidity
64%
UV index
9 - Very High
Sunrise / sunset
06:46 AM / 07:59 PM
Friday, August 21
Sunny High 93° Low 79°Precipitation
38%
· 0.04 in
Max wind
13 mph
Humidity
67%
UV index
9 - Very High
Sunrise / sunset
06:47 AM / 07:58 PM
Saturday, August 22
Overcast High 90° Low 77°Precipitation
75%
· 0.18 in
Max wind
15 mph
Humidity
70%
UV index
7 - High
Sunrise / sunset
06:47 AM / 07:57 PM
Sunday, August 23
Light rain shower High 80° Low 74°Precipitation
89%
· 0.41 in
Max wind
9 mph
Humidity
86%
UV index
6 - High
Sunrise / sunset
06:48 AM / 07:56 PM
Monday, August 24
Light rain shower High 90° Low 73°Precipitation
77%
· 0.46 in
Max wind
11 mph
Humidity
74%
UV index
8 - Very High
Sunrise / sunset
06:49 AM / 07:54 PM
Tuesday, August 25
Patchy rain nearby High 93° Low 75°Precipitation
74%
· 0.54 in
Max wind
11 mph
Humidity
71%
UV index
8 - Very High
Sunrise / sunset
06:49 AM / 07:53 PM
Wednesday, August 26
Sunny High 96° Low 75°Precipitation
71%
· 0.33 in
Max wind
18 mph
Humidity
72%
UV index
8 - Very High
Sunrise / sunset
06:50 AM / 07:52 PM
Thursday, August 27
Sunny High 92° Low 75°Precipitation
57%
· 0.1 in
Max wind
12 mph
Humidity
73%
UV index
8 - Very High
Sunrise / sunset
06:51 AM / 07:51 PM
Friday, August 28
Sunny High 95° Low 73°Precipitation
4%
· 0.0 in
Max wind
9 mph
Humidity
55%
UV index
9 - Very High
Sunrise / sunset
06:51 AM / 07:50 PM
Saturday, August 29
Overcast High 90° Low 77°Precipitation
66%
· 0.09 in
Max wind
12 mph
Humidity
63%
UV index
7 - High
Sunrise / sunset
06:52 AM / 07:48 PM
Sunday, August 30
Patchy rain nearby High 87° Low 74°Precipitation
57%
· 0.06 in
Max wind
11 mph
Humidity
69%
UV index
8 - Very High
Sunrise / sunset
06:53 AM / 07:47 PM
Charleston 14-day outlook: the story
The warmest day of Charleston's 14-day outlook is Tuesday, August 18 with a high near 103°F (40°C); the coolest night comes Friday, August 28, dipping to 73°F (23°C). Temperatures hold fairly steady from week to week. Highs over the next two weeks average 94°F (35°C), about 8°F (4°C) above the typical August high of 86°F (30°C).
Precipitation is most likely on Saturday 22, Sunday 23, Monday 24, Tuesday 25 and beyond; the wettest day looks like Tuesday, August 25 with about 0.54 in (13.7 mm) expected. For the weekend, expect Saturday 90°F (32°C) and overcast / Sunday 80°F (27°C) and light rain shower.
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 8 of the next 14 days, peaking around Tuesday, August 25.
What will be the warmest day in Charleston over the next 14 days?
Tuesday, August 18, with a forecast high near 103°F (40°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