Richmond weather in September
September in Richmond: warm, rainy, with clean air — an excellent time to visit.
#4 of 12 months in Richmond · #390 of 897 destinations to visit in September · comfort 85/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Richmond in September
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Richmond climate normals — September
| Daytime high | 28°C / 82°F | 🌤 warm |
|---|---|---|
| Nighttime low | 18°C / 65°F | |
| Rainfall | 90 mm / 3.5 in | 🌧 rainy |
| Rainy days | 8 days | |
| Humidity | 66% | 💧 humid |
| Dew point | 15°C / 59°F | |
| Sunshine | 9.2 h/day | |
| Daylight | 12.4 h | |
| Wind | 13 km/h / 8 mph | |
| Air quality (US AQI) | 43 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Richmond in September — FAQ
- Is September a good time to visit Richmond?
- September in Richmond: warm, rainy, with clean air — an excellent time to visit. It ranks #4 of 12 months for Richmond on SeasonMap's comfort score (85/100).
- What is the weather like in Richmond in September?
- In September, Richmond averages a daily high of 27.5°C and a low of 18.2°C, with about 89.7 mm of rain over roughly 7.6 rainy days.
- What is the air quality in Richmond in September?
- Richmond has a mean US Air Quality Index of about 43 in September.