Charleston, SC 14-Day Forecast
South Carolina, United States 🇺🇸
79°
Overcast right now
Today: high 85°, low 77°
Updated 2 min ago
Charleston weather for the next 14 days
Wednesday, September 16
Overcast High 86° Low 72°Precipitation
7%
· 0.0 in
Max wind
14 mph
Humidity
60%
UV index
8 - Very High
Sunrise / sunset
07:04 AM / 07:25 PM
Thursday, September 17
Sunny High 85° Low 72°Precipitation
5%
· 0.0 in
Max wind
11 mph
Humidity
62%
UV index
8 - Very High
Sunrise / sunset
07:04 AM / 07:23 PM
Friday, September 18
Sunny High 88° Low 73°Precipitation
17%
· 0.0 in
Max wind
9 mph
Humidity
63%
UV index
8 - Very High
Sunrise / sunset
07:05 AM / 07:22 PM
Saturday, September 19
Sunny High 87° Low 74°Precipitation
17%
· 0.01 in
Max wind
9 mph
Humidity
69%
UV index
9 - Very High
Sunrise / sunset
07:06 AM / 07:21 PM
Sunday, September 20
Sunny High 88° Low 76°Precipitation
5%
· 0.0 in
Max wind
8 mph
Humidity
70%
UV index
8 - Very High
Sunrise / sunset
07:06 AM / 07:19 PM
Monday, September 21
Sunny High 88° Low 76°Precipitation
66%
· 0.15 in
Max wind
9 mph
Humidity
77%
UV index
8 - Very High
Sunrise / sunset
07:07 AM / 07:18 PM
Tuesday, September 22
Patchy rain nearby High 86° Low 77°Precipitation
36%
· 0.02 in
Max wind
9 mph
Humidity
77%
UV index
7 - High
Sunrise / sunset
07:07 AM / 07:16 PM
Wednesday, September 23
Sunny High 87° Low 77°Precipitation
67%
· 0.12 in
Max wind
11 mph
Humidity
74%
UV index
7 - High
Sunrise / sunset
07:08 AM / 07:15 PM
Thursday, September 24
Light rain shower High 80° Low 74°Precipitation
90%
· 1.41 in
Max wind
14 mph
Humidity
90%
UV index
6 - High
Sunrise / sunset
07:09 AM / 07:14 PM
Friday, September 25
Light rain shower High 84° Low 75°Precipitation
89%
· 1.07 in
Max wind
16 mph
Humidity
86%
UV index
6 - High
Sunrise / sunset
07:09 AM / 07:12 PM
Saturday, September 26
Light rain shower High 80° Low 73°Precipitation
90%
· 0.48 in
Max wind
11 mph
Humidity
87%
UV index
6 - High
Sunrise / sunset
07:10 AM / 07:11 PM
Sunday, September 27
Overcast High 80° Low 70°Precipitation
76%
· 0.14 in
Max wind
10 mph
Humidity
78%
UV index
6 - High
Sunrise / sunset
07:11 AM / 07:10 PM
Monday, September 28
Sunny High 80° Low 63°Precipitation
3%
· 0.0 in
Max wind
12 mph
Humidity
58%
UV index
7 - High
Sunrise / sunset
07:11 AM / 07:08 PM
Charleston 14-day outlook: the story
The warmest day of Charleston's 14-day outlook is Friday, September 18 with a high near 88°F (31°C); the coolest night comes Monday, September 28, dipping to 63°F (17°C). The trend points cooler: week two runs about 4°F below week one. Highs over the next two weeks average 87°F (30°C), about 4°F (2°C) above the typical September high of 83°F (28°C).
Precipitation is most likely on Monday 21, Wednesday 23, Thursday 24, Friday 25 and beyond; the wettest day looks like Thursday, September 24 with about 1.41 in (35.8 mm) expected. For the weekend, expect Saturday 87°F (31°C) and sunny / Sunday 88°F (31°C) and sunny.
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 6 of the next 14 days, peaking around Thursday, September 24.
What will be the warmest day in Charleston over the next 14 days?
Friday, September 18, with a forecast high near 88°F (31°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