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Today Hourly 7 days 30 days September
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September 2026 Weather | St. Louis, Missouri

Tue 9/1
Cloudy Weather
Day 90°
Night 70°
Wed 9/2
Cloudy Weather
Day 90°
Night 72°
Thu 9/3
Sunny Weather
Day 90°
Night 70°
Fri 9/4
Sunny Weather
Day 88°
Night 70°
Sat 9/5
Sunny Weather
Day 90°
Night 72°
Sun 9/6
Sunny Weather
Day 90°
Night 72°
Mon 9/7
Cloudy Weather
Day 90°
Night 70°
Tue 9/8
Cloudy Weather
Day 90°
Night 72°
Wed 9/9
Cloudy Weather
Day 90°
Night 70°
Thu 9/10
Cloudy Weather
Day 88°
Night 70°
Fri 9/11
Cloudy Weather
Day 88°
Night 70°
Sat 9/12
Cloudy Weather
Day 90°
Night 70°
Sun 9/13
Rainy Weather
Day 90°
Night 70°
Mon 9/14
Rainy Weather
Day 79°
Night 59°
Tue 9/15
Cloudy Weather
Day 75°
Night 66°
Wed 9/16
Cloudy Weather
Day 79°
Night 66°
Thu 9/17
Rainy Weather
Day 77°
Night 61°
Fri 9/18
Sunny with a Chance of Thunderstorms
Day 84°
Night 64°
Sat 9/19
Cloudy Weather
Day 86°
Night 64°
Sun 9/20
Sunny with a Chance of Thunderstorms
Day 86°
Night 61°
Mon 9/21
Sunny with a Chance of Thunderstorms
Day 81°
Night 57°
Tue 9/22
Rainy Weather
Day 73°
Night 59°
Wed 9/23
Rainy Weather
Day 72°
Night 63°
Thu 9/24
Rainy Weather
Day 73°
Night 61°
Fri 9/25
Cloudy Weather
Day 73°
Night 61°
Sat 9/26
Cloudy Weather
Day 77°
Night 63°
Sun 9/27
Cloudy Weather
Day 81°
Night 63°
Mon 9/28
Cloudy Weather
Day 82°
Night 63°
Tue 9/29
Partly Sunny with Showers
Day 82°
Night 63°
Wed 9/30
Cloudy Weather
Day 82°
Night 54°

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