Climate averages 1991–2020
Columbia (Missouri), United States weather
in September.
A warm, moderately wet month: the 4th warmest and the joint 7th driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
September is a warm month in Columbia (Missouri), United States: daytime highs average 26.1°C and nights cool to about 16.5°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 86 mm of rain on roughly 8 days, which makes September a moderately wet month (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 29 min on an average September day.
The nearest other city in this atlas is O'Fallon (142 km away). In September its highs average 26.0°C, about as warm as Columbia (Missouri), United States, with 81 mm of rain.
Among the 498 cities listed in the United States, Columbia (Missouri), United States ranks joint 276th of 498 for the warmest September highs and joint 314th of 498 for the driest September (rainfall, lowest first). The mean September high of those 498 cities is 26.9°C; Columbia (Missouri), United States is 0.8°C cooler than that mean.
From September to October, average highs fall by 6.9°C to 19.2°C, and monthly rainfall falls from 86 mm to 83 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Columbia (Missouri), United States climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 3.6°C-5.0°C | -5.0°C | 55 | 7.2 | 9.810 h |
| February | 6.6°C-2.9°C | -2.9°C | 59 | 7.0 | 10.711 h |
| March | 12.6°C2.4°C | 2.4°C | 86 | 10.7 | 11.912 h |
| April | 18.5°C8.1°C | 8.1°C | 129 | 11.6 | 13.213 h |
| May | 23.7°C14.0°C | 14.0°C | 134 | 13.3 | 14.314 h |
| June | 28.8°C19.1°C | 19.1°C | 113 | 11.9 | 14.815 h |
| July | 31.1°C21.6°C | 21.6°C | 93 | 9.5 | 14.615 h |
| August | 30.4°C20.8°C | 20.8°C | 76 | 8.9 | 13.714 h |
| September, selected | 26.1°C16.5°C | 16.5°C | 86 | 7.7 | 12.512 h |
| October | 19.2°C10.1°C | 10.1°C | 83 | 8.8 | 11.211 h |
| November | 11.7°C3.5°C | 3.5°C | 79 | 7.8 | 10.110 h |
| December | 5.8°C-2.0°C | -2.0°C | 59 | 6.9 | 9.59 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- O'Fallon in SeptemberUnited States · 142 kmHigh 26.0°C · Low 16.7°C · 81 mm rain
- Lee's Summit in SeptemberUnited States · 177 kmHigh 25.3°C · Low 16.2°C · 93 mm rain
- Independence in SeptemberUnited States · 180 kmHigh 25.2°C · Low 16.1°C · 93 mm rain
- St. Louis in SeptemberUnited States · 189 kmHigh 26.4°C · Low 16.6°C · 83 mm rain
- Kansas City in SeptemberUnited States · 195 kmHigh 25.6°C · Low 16.2°C · 93 mm rain
- Overland Park in SeptemberUnited States · 202 kmHigh 25.3°C · Low 16.3°C · 93 mm rain
- Springfield (Missouri), United States in SeptemberUnited States · 211 kmHigh 26.2°C · Low 16.4°C · 98 mm rain
- Olathe in SeptemberUnited States · 215 kmHigh 25.4°C · Low 16.4°C · 93 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Columbia) is explained once on the Columbia (Missouri), United States year overview and on the Sources, method and limits page.