Chesterfield, MO 14 Day Weather - 63005 WeatherWorld.com
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Chesterfield, MO Weather Forecast


Chesterfield, MO Weather Forecast Dated: 918 AM Tue Sep 15 2026
Expect a hot stretch with a mix of sun and clouds and occasional showers over the coming period. moderate humidity and no major pressure swings will dominate. Isolated storms at times.
Tuesday, September 15, 2026
Mid-Morning
82°F 28°C
Sunny
Mid-Afternoon
96°F 36°C
Overcast
Early-Evening
84°F 29°C
Partly Cloudy
Very hot with temperatures reaching 96°F 36°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with steady humidity and steady pressure. Winds turning from the SSW to the E at 6 mph 9 km/h.
Wednesday, September 16, 2026
Mid-Morning
74°F 23°C
Scattered Showers
Mid-Afternoon
94°F 35°C
Sunny
Early-Evening
86°F 31°C
Scattered Showers
Hot and sweltering around 94°F 35°C (heat index 100°F 38°C), scattered downpours possible, with lower humidity and steady pressure.
Thursday, September 17, 2026
Mid-Morning
79°F 26°C
Sunny
Mid-Afternoon
99°F 37°C
Sunny
Early-Evening
87°F 30°C
Cloudy
Very hot with a high of 99°F 37°C, feeling closer to 102°F 39°C in the humidity, sunny in the morning, partly cloudy in the afternoon, and cloudy this evening, with steady humidity and steady pressure.
Friday, September 18, 2026
Mid-Morning
77°F 25°C
Partly Cloudy
Mid-Afternoon
98°F 37°C
Sunny
Early-Evening
88°F 31°C
Scattered Showers
Sizzling hot near 98°F 37°C with a heat index reaching 101°F 38°C, periods of heavy rain and gusty conditions, with lower humidity and barometric pressure falling.
Saturday, September 19, 2026
Mid-Morning
81°F 27°C
Overcast
Mid-Afternoon
100°F 38°C
Partly Cloudy
Early-Evening
91°F 33°C
Overcast
Scorching hot near 100°F 38°C, overcast in the morning, partly cloudy in the afternoon, and cloudy this evening, with steady humidity and barometric pressure falling. Winds switching from the SW to the SSW at 6 mph 9 km/h.
Sunday, September 20, 2026
Mid-Morning
80°F 27°C
Overcast
Mid-Afternoon
91°F 33°C
Overcast
Early-Evening
86°F 31°C
Overcast
Very hot with temperatures reaching 91°F 33°C, overcast through the afternoon, turning cloudy this evening, with lower humidity and steady pressure.
Monday, September 21, 2026
Mid-Morning
73°F 23°C
Fog
Mid-Afternoon
80°F 27°C
Scattered Showers
Early-Evening
75°F 24°C
Sunny
Balmy with temperatures reaching 80°F 27°C, periods of heavy rain and gusty conditions, with lower humidity and steady pressure. Winds moving from the W to the NW at 7 mph 12 km/h.
Tuesday, September 22, 2026
Mid-Morning
67°F 20°C
Sunny
Mid-Afternoon
85°F 29°C
Sunny
Early-Evening
79°F 26°C
Overcast
Quite warm around 85°F 29°C, sunny in the morning, cloudy in the afternoon, and overcast this evening, with lower humidity and steady pressure.
Wednesday, September 23, 2026
Mid-Morning
75°F 24°C
Sunny
Mid-Afternoon
92°F 33°C
Cloudy
Early-Evening
79°F 26°C
Overcast
Hot temperatures near 92°F 33°C, sunny in the morning, overcast in the afternoon, and cloudy this evening, with increasing humidity and barometric pressure falling. Winds swinging from the S to the W at 4 mph 6 km/h.
Thursday, September 24, 2026
Mid-Morning
62°F 17°C
Sunny
Mid-Afternoon
77°F 25°C
Sunny
Early-Evening
68°F 20°C
Sunny
Mild with a high of 77°F 25°C, partly cloudy in the morning, becoming sunny through the afternoon and evening, with lower humidity and steady pressure. Winds shifting from the NW to the N at 9 mph 15 km/h.
Friday, September 25, 2026
Mid-Morning
60°F 16°C
Sunny
Mid-Afternoon
78°F 26°C
Overcast
Early-Evening
71°F 22°C
Partly Cloudy
Pleasant near 78°F 26°C, sunny in the morning, cloudy in the afternoon, and sunny this evening, with lower humidity and steady pressure.
Saturday, September 26, 2026
Mid-Morning
67°F 20°C
Overcast
Mid-Afternoon
85°F 30°C
Partly Cloudy
Early-Evening
77°F 25°C
Sunny
Balmy with temperatures reaching 85°F 30°C, overcast in the morning, becoming sunny through the afternoon and evening, with steady humidity and steady pressure. Winds S at 8 mph 13 km/h.
Sunday, September 27, 2026
Mid-Morning
72°F 22°C
Sunny
Mid-Afternoon
90°F 32°C
Sunny
Early-Evening
82°F 28°C
Sunny
Sizzling hot with 90°F 32°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and barometric pressure falling. Winds out of the S at 13 mph 20 km/h. Gusts up to 23 mph 36 km/h.
Monday, September 28, 2026
Mid-Morning
77°F 25°C
Cloudy
Mid-Afternoon
95°F 35°C
Sunny
Early-Evening
82°F 28°C
Partly Cloudy
Hot temperatures near 95°F 35°C, partly cloudy throughout the day, with steady humidity and steady pressure. Winds moving from the SSW to the ESE at 10 mph 16 km/h.
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