Raleigh weather in September
September in Raleigh: warm, rainy, with clean air — an excellent time to visit.
#4 of 12 months in Raleigh · #453 of 897 destinations to visit in September · comfort 83/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Raleigh in September
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Raleigh climate normals — September
| Daytime high | 28°C / 82°F | 🌤 warm |
|---|---|---|
| Nighttime low | 19°C / 66°F | |
| Rainfall | 118 mm / 4.7 in | 🌧 rainy |
| Rainy days | 9 days | |
| Humidity | 71% | 💧 humid |
| Dew point | 16°C / 62°F | |
| Sunshine | 9.6 h/day | |
| Daylight | 12.4 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 46 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Raleigh in September — FAQ
- Is September a good time to visit Raleigh?
- September in Raleigh: warm, rainy, with clean air — an excellent time to visit. It ranks #4 of 12 months for Raleigh on SeasonMap's comfort score (83/100).
- What is the weather like in Raleigh in September?
- In September, Raleigh averages a daily high of 27.6°C and a low of 18.8°C, with about 118.4 mm of rain over roughly 9 rainy days.
- What is the air quality in Raleigh in September?
- Raleigh has a mean US Air Quality Index of about 46 in September.