Kansas City weather in September
September in Kansas City: warm, a little rain, with clean air — one of the best months to visit.
#1 of 12 months in Kansas City · #203 of 897 destinations to visit in September · comfort 89/100 (tier A)
Updated June 2026 · climate normals from ERA5 reanalysis
Traveller notes on Kansas City in September
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Kansas City climate normals — September
| Daytime high | 28°C / 82°F | 🌤 warm |
|---|---|---|
| Nighttime low | 18°C / 65°F | |
| Rainfall | 74 mm / 2.9 in | 🌦 some rain |
| Rainy days | 7 days | |
| Humidity | 60% | 💧 humid |
| Dew point | 14°C / 57°F | |
| Sunshine | 10.3 h/day | |
| Daylight | 12.4 h | |
| Wind | 16 km/h / 10 mph | |
| Air quality (US AQI) | 44 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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Kansas City in September — FAQ
- Is September a good time to visit Kansas City?
- September in Kansas City: warm, a little rain, with clean air — one of the best months to visit. It ranks #1 of 12 months for Kansas City on SeasonMap's comfort score (89/100).
- What is the weather like in Kansas City in September?
- In September, Kansas City averages a daily high of 28°C and a low of 18.2°C, with about 74 mm of rain over roughly 7.4 rainy days.
- What is the air quality in Kansas City in September?
- Kansas City has a mean US Air Quality Index of about 44 in September.