Charleston, WV weather in September
Expect warm weather with some rain in Charleston in September, with highs near 80°F and lows near 57°F. Rain falls on about 9 days. Good for outdoor plans.
- Normal high
- 80°F
- Normal low
- 57°F
- Wet days
- 9
- 3.5 in total
- Muggy days
- 6
- dew point 65°F+
How September changes from start to finish
| September 1 | September 30 | |
|---|---|---|
| Normal high | 84°F | 74°F |
| Normal low | 62°F | 52°F |
| Chance of a wet day | 30% | 31% |
| Sunrise / sunset | 6:56 am / 7:56 pm | 7:21 am / 7:11 pm |
| Daylight | 13.0 h | 11.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical September day
- 6 am59°Fdew point 57°F
- 9 am65°Fdew point 59°F
- Noon75°Fdew point 59°F
- 3 pm77°Fdew point 58°F
- 6 pm74°Fdew point 59°F
- 9 pm65°Fdew point 60°F
NOAA hourly normals (local standard time) from Charleston Yeager Airport (3 mi away); average wind 3 mph; clear or few clouds in 57% of daytime hours, mostly cloudy or overcast in 33%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F10 of 30
- Hot dayshigh 90°F or more3 of 30
- Muggy daysdaily mean dew point 65°F or more6 of 30
- Wet daysat least 0.01 in of rain or melted snow9 of 30
- Notable rainat least 0.10 in6 of 30
- Freezing nightslow 32°F or below0 of 30
- Snow on the groundsnow depth 1 in or more0 of 30
Average days per September, counted from daily records for each year 1991-2020.
Rain in September
Normal precipitation is 3.5 in; a dry September brings about 1.9 in and a wet one about 4.6 in (25th and 75th percentiles). About 2 days bring half an inch or more, and about 1 an inch or more.
How September varies from year to year
- Warmest September, 1991-20202019: average high 89°F
- Coolest September2006: average high 74°F
- Wettest September2018: 11.6 in
- Driest September2019: 0.5 in
- Highest reading98°F (September 13, 2019)
- Lowest reading37°F (September 30, 1993)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
September compared with August and October
| August | September | October | |
|---|---|---|---|
| Normal high | 85°F | 80°F | 69°F |
| Normal low | 64°F | 57°F | 45°F |
| Wet days | 11 | 9 | 10 |
| Comfortable days | 2 | 10 | 15 |
| Daylight | 13.6 h | 12.4 h | 11.2 h |
Highs change by -5°F from August and -11°F into October.
How Charleston ranks in September
- Normal high205th warmest of 378 cities; 2nd of 4 in West Virginia
- Wet days253rd driest of 378
- Comfortable days154th most of 342
What to pack for Charleston in September
- A rain jacket or umbrella – rain on about 9 days
Heating and cooling
September has 45 heating degree days and 144 cooling degree days (base 65°F), 3% of the year's total heating and cooling demand.
Questions
How hot is Charleston in September?
The normal high is 80°F and the normal low is 57°F. From 1991 to 2020 the hottest September reading was 98°F (most recently on September 13, 2019).
Does it rain a lot in Charleston in September?
About 9 days in September have at least 0.01 in of precipitation, and the normal total is 3.5 in. The wettest September in 1991-2020 was in 2018 (11.6 in); the driest was in 2019 (0.5 in).
Is September a good time to visit Charleston?
September ranks 4th of 12 months on our comfort score for Charleston (60 out of 100). It has about 10 comfortable days and about 3 days at 90°F or hotter. The best months are April, May and October.
Where the numbers come from
- Temperature, rain, snowfall, snow depth, frost dates and humidity and wind by hour: Charleston Yeager Airport (USW00013866), 3.1 mi NE of the city center, 910 ft (314 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Cloud cover: Huntington Tri State Airport (USW00003860), 50 mi W of the city center, 824 ft (228 ft higher than the city). NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Yeager Airport (724140-13866), 3.1 mi NE of the city center, 912 ft (316 ft higher than the city). Hourly observations, 1991-2020.