| < September >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Average Daylight per day
|Sun altitude at solar noon on the 21st day.
- The average temperature in St. Louis/ Lambert, Mo in September is warm at 21.2 °C (70.16 °F).
- Afternoons can be hot with average high temperatures reaching 26.6 °C (79.9 °F).
- Overnight temperatures are generally very mild with an average low of 15.8 °C (60.4 °F).
- In September the range/ variation of daily mean temperatures is 10.8 °C (19.4 °F).
- The weather in September is somewhat dry. Just 79.2mm (3.1in) of water is released.
- The shortest day is 11:46 long and the longest day is 13:00 long with an average length of 12:23.
Check the distance to and compare the St. Louis/ Lambert, Mo September averages with somewhere beginning with:
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Weather Trend Graph for September in St. Louis/ Lambert, Mo, Usa
Navigate to September Weather in Locations Surrounding St. Louis/ Lambert, Mo:
- Carlinville, Il, Usa - 72.3 kms (44.9 miles) NE
- White Halle, Il, Usa - 42.2 kms (26.2 miles) NE
- Windsor, Il, Usa - 121.5 kms (75.5 miles) ENE
- Hillsboro, Il, Usa - 121.5 kms (75.5 miles) ENE
- Sparta, Il, Usa - 88.4 kms (55 miles) SE
- Farmington, Mo, Usa - 89.3 kms (55.5 miles) SSE