St Charles, MO 14 Day Weather - WeatherWorld.com

Scorching hot near 101°F 38°C, drier conditions through late afternoon before showers move in, with increasing humidity and steady pressure. Winds turning from the SSW to the SSE at 12 mph 20 km/h. Gusts up to 22 mph 35 km/h.

Comfortable with temperatures reaching 71°F 22°C, clouds and showers taking over for the afternoon and evening, with steady humidity and steady pressure. Winds switching from the WNW to the SSW at 6 mph 9 km/h.

Quite warm around 87°F 31°C, overcast in the morning, becoming sunny through the afternoon and evening, with lower humidity and barometric pressure falling.

Warm and summery around 82°F 28°C (feels like 85°F 30°C), overcast throughout the day, with lower humidity and steady pressure. Winds moving from the SSW to the NE at 5 mph 9 km/h.

Quite warm reaching 88°F 31°C, feeling like 91°F 33°C during peak afternoon, overcast through the afternoon, turning cloudy this evening, with lower humidity and steady pressure. Winds swinging from the S to the SW at 6 mph 9 km/h.

Very hot with temperatures reaching 99°F 37°C, cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds blowing from the SW at 13 mph 21 km/h.

Warm and summery around 86°F 30°C (feels like 89°F 32°C), periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds turning from the NW to the NNE at 8 mph 13 km/h.

Quite warm around 87°F 30°C, sunny throughout the day, with lower humidity and steady pressure. Winds switching from the ENE to the ESE at 7 mph 11 km/h.

Very hot with a high of 98°F 37°C, feeling closer to 101°F 38°C in the humidity, sunny throughout the day, with steady humidity and barometric pressure falling. Winds blowing from the S at 8 mph 13 km/h.

Sweltering heat reaching 103°F 39°C, sunny in the morning, partly cloudy in the afternoon, and cloudy this evening, with lower humidity and barometric pressure falling. Winds WSW at 11 mph 17 km/h.

Very hot with temperatures reaching 99°F 37°C, sunny in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and barometric pressure falling. Winds shifting from the WSW to the NE at 5 mph 7 km/h.

Dangerously hot with a high of 102°F 39°C, sunny throughout the day, with steady humidity and barometric pressure falling. Winds turning from the SW to the SSW at 9 mph 14 km/h.

Quite warm around 88°F 31°C, periods of heavy rain and gusty conditions, with increasing humidity and barometric pressure rising. Winds switching from the W to the SE at 9 mph 14 km/h. Gusts up to 20 mph 31 km/h.

Mildly cool near 62°F 17°C, clouds and showers taking over for the afternoon and evening, with increasing humidity and steady pressure. Winds out of the WSW at 10 mph 16 km/h.