St. Louis 7-day weather forecast

Written by:
September 8, 2025
ESOlex // Shutterstock

St. Louis 7-day weather forecast

Stacker created the forecast for St. Louis, Missouri using data from OpenWeather. This week's high is 101 °F on Sunday, while the low is 49 °F on Monday. There are expected to be 4 sunny days and rain on 1 day this week.

There are currently no weather alerts.

Monday, September 8

- High of 79 °F, low of 49 °F (22% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Light breeze (6 mph wind)
- Sunrise at 6:36 AM, sunset at 7:20 PM
1 / 6
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Tuesday, September 9

- High of 87 °F, low of 55 °F (21% humidity)
- Fair with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 6:37 AM, sunset at 7:19 PM
2 / 6
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Wednesday, September 10

- High of 93 °F, low of 63 °F (19% humidity)
- Sunny with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Light breeze (7 mph wind)
- Sunrise at 6:38 AM, sunset at 7:17 PM
3 / 6
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Thursday, September 11

- High of 95 °F, low of 70 °F (26% humidity)
- Fair with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 6:39 AM, sunset at 7:15 PM
4 / 6
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Friday, September 12

- High of 100 °F, low of 73 °F (18% humidity)
- Partly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Light breeze (5 mph wind)
- Sunrise at 6:40 AM, sunset at 7:14 PM
5 / 6
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Saturday, September 13

- High of 91 °F, low of 73 °F (30% humidity)
- Mostly cloudy with a 58% chance of rain (1 mm of rain)
- High risk of harm from sun exposure (7 UV index)
- Gentle breeze (11 mph wind)
- Sunrise at 6:40 AM, sunset at 7:12 PM
6 / 6
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Sunday, September 14

- High of 101 °F, low of 73 °F (20% humidity)
- Partly cloudy with a 0% chance of rain
- High risk of harm from sun exposure (7 UV index)
- Gentle breeze (8 mph wind)
- Sunrise at 6:41 AM, sunset at 7:11 PM
- Last quarter moon

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