Wentzville Weather in September

September in Wentzville averages 27°C (81°F) during the day and 14°C (57°F) at night. Quite a bit of rainfall is typical this month, with around 108 mm (4.3 in) on average. An umbrella is a good idea.

Rainfall in Wentzville in September

You can typically expect 10 days of rain this month, averaging around 108 mm (4.3 in). Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Wentzville in September

In September, expect high temperatures in Wentzville, with highs of 27°C (81°F) and lows of 14°C (57°F) at night. Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights cool down to 14°C (57°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.

Sunshine in Wentzville in September

Expect sunny days throughout the month, with an estimated 235 hours of sunshine. This makes it a pleasant time to visit Wentzville.

If you prefer dry days with pleasant temperatures, October typically offers the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.