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Webster Groves, MO Weather Forecast
Webster Groves, MO Weather Forecast Dated: 728 PM Sat Sep 12 2026
Expect a very warm period with a mix of sun and clouds and frequent chances of rain over the coming period. moderate humidity and no major pressure swings will dominate.
Saturday, September 12, 2026
Mid-Morning
74°F 23°C
Sunny
Mid-Afternoon
87°F 30°C
Overcast
Early-Evening
82°F 28°C
Sunny
Warm and summery around 87°F 30°C (feels like 93°F 34°C), sunny in the morning, overcast in the afternoon, and sunny this evening, with lower humidity and steady pressure.
Sunday, September 13, 2026
Mid-Morning
76°F 24°C
Overcast
Mid-Afternoon
93°F 34°C
Overcast
Early-Evening
79°F 26°C
Scattered Showers
Hot and sweltering around 93°F 34°C, scattered downpours possible, with lower humidity and steady pressure. Winds turning from the NNE to the ENE at 9 mph 15 km/h.
Monday, September 14, 2026
Mid-Morning
64°F 18°C
Light Showers
Mid-Afternoon
82°F 28°C
Overcast
Early-Evening
83°F 29°C
Sunny
Quite warm around 82°F 28°C, morning showers, giving way to clearing skies, with lower humidity and barometric pressure falling. Winds switching from the E to the ESE at 7 mph 11 km/h.
Tuesday, September 15, 2026
Mid-Morning
83°F 28°C
Sunny
Mid-Afternoon
93°F 34°C
Sunny
Early-Evening
89°F 31°C
Sunny
Hot temperatures near 93°F 34°C, sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure. Winds moving from the SSW to the ENE at 5 mph 8 km/h.
Wednesday, September 16, 2026
Mid-Morning
86°F 30°C
Sunny
Mid-Afternoon
97°F 36°C
Sunny
Early-Evening
89°F 32°C
Sunny
Hot and sweltering around 97°F 36°C (heat index 101°F 38°C), sunny through the afternoon, turning cloudy this evening, with steady humidity and steady pressure.
Thursday, September 17, 2026
Mid-Morning
75°F 24°C
Scattered Showers
Mid-Afternoon
92°F 33°C
Sunny
Early-Evening
82°F 28°C
Sunny
Very hot with a high of 92°F 33°C, feeling closer to 96°F 35°C in the humidity, locally heavy downpours at times, with lower humidity and steady pressure. Winds swinging from the NE to the NNE at 8 mph 13 km/h.
Friday, September 18, 2026
Mid-Morning
73°F 23°C
Overcast
Mid-Afternoon
87°F 31°C
Sunny
Early-Evening
85°F 29°C
Cloudy
Warm and summery around 87°F 31°C (feels like 90°F 32°C), cloudy through the afternoon, turning partly cloudy this evening, with lower humidity and barometric pressure falling.
Saturday, September 19, 2026
Mid-Morning
79°F 26°C
Partly Cloudy
Mid-Afternoon
93°F 34°C
Sunny
Early-Evening
85°F 30°C
Sunny
Sizzling hot with 93°F 34°C, partly cloudy in the morning, sunny in the afternoon, and partly cloudy this evening, with steady humidity and steady pressure. Winds shifting from the SW to the WSW at 7 mph 12 km/h.
Sunday, September 20, 2026
Mid-Morning
65°F 18°C
Light Showers
Mid-Afternoon
65°F 19°C
Light Showers
Early-Evening
65°F 18°C
Light Showers
Refreshing around 65°F 19°C, on-and-off showers throughout the day, with steady humidity and steady pressure. Winds turning from the NNE to the NE at 8 mph 13 km/h.
Monday, September 21, 2026
Mid-Morning
62°F 17°C
Scattered Showers
Mid-Afternoon
62°F 17°C
Light Showers
Early-Evening
62°F 17°C
Heavy Rain Showers
Mildly cool near 62°F 17°C, periods of heavy rain and gusty conditions, with steady humidity and steady pressure. Winds switching from the ENE to the NE at 9 mph 15 km/h. Gusts up to 21 mph 34 km/h.
Tuesday, September 22, 2026
Mid-Morning
61°F 16°C
Light Fog
Mid-Afternoon
63°F 17°C
Scattered Showers
Early-Evening
61°F 16°C
Scattered Showers
Comfortable at 63°F 17°C, scattered downpours possible, with steady humidity and steady pressure. Winds moving from the WSW to the NNW at 10 mph 16 km/h. Gusts up to 22 mph 35 km/h.
Wednesday, September 23, 2026
Mid-Morning
74°F 23°C
Partly Cloudy
Mid-Afternoon
88°F 31°C
Sunny
Early-Evening
79°F 26°C
Sunny
Balmy with temperatures reaching 88°F 31°C, sunny throughout the day, with steady humidity and steady pressure. Winds swinging from the SW to the N at 10 mph 16 km/h. Gusts up to 22 mph 35 km/h.
Thursday, September 24, 2026
Mid-Morning
62°F 17°C
Sunny
Mid-Afternoon
77°F 25°C
Sunny
Early-Evening
74°F 24°C
Sunny
Enjoyable around 77°F 25°C, sunny throughout the day, with lower humidity and steady pressure.
Friday, September 25, 2026
Mid-Morning
71°F 22°C
Partly Cloudy
Mid-Afternoon
95°F 35°C
Partly Cloudy
Early-Evening
92°F 33°C
Sunny
Hot temperatures near 95°F 35°C, overcast in the morning, becoming partly cloudy through the afternoon and evening, with steady humidity and barometric pressure falling. Winds shifting from the S to the SSW at 13 mph 20 km/h. Gusts up to 30 mph 48 km/h.
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