Weather forecast for 10 daysChesterfield, MO

Weather forecast for the weekend

Sunday Oct 18, 2026

  • 66°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 7mphSSE 163°
  • Humidity: 52%
  • UV index: 5
  • Sunrise: 7:14 am CDT
  • Sunset: 6:20 pm CDT
  • ▼
Today, in Chesterfield, uninterrupted sunshine is anticipated.
Substantial temperature variations are forecasted, soaring to a maximum of a comfortable 66.2°F and descending to a minimum of a wintry 37.4°F.
The maximum temperature today is forecasted to reflect October's average high of 66.4°F.
Sunrise will be at 7:14 am and sunset at 6:20 pm; the daylight will last for 11h and 5min.

10-day overview

Daily temperatures

Warmest period: Saturday - Sunday 81°C.
Coldest day: today 66°C.

Chance of precipitation

Highest chance: tomorrow 6%.

Long-term weather forecast

  • Sunday
  • Oct 18, 2026
  • 66°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 7mphSSE 163°
  • Humidity: 52%
  • UV index: 5
  • Sunrise: 7:14 am CDT
  • Sunset: 6:20 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 72°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 4mphSSE 161°
  • Humidity: 55%
  • UV index: 5
  • Sunrise: 7:15 am CDT
  • Sunset: 6:18 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 73°F
  • 43°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphSE 128°
  • Humidity: 54%
  • UV index: 4
  • Sunrise: 7:16 am CDT
  • Sunset: 6:17 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 75°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 2mphS 178°
  • Humidity: 53%
  • UV index: 4
  • Sunrise: 7:17 am CDT
  • Sunset: 6:15 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 77°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphSSE 164°
  • Humidity: 55%
  • UV index: 4
  • Sunrise: 7:18 am CDT
  • Sunset: 6:14 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 79°F
  • 48°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphSE 136°
  • Humidity: 53%
  • UV index: 4
  • Sunrise: 7:19 am CDT
  • Sunset: 6:13 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 81°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphSSE 155°
  • Humidity: 49%
  • UV index: 4
  • Sunrise: 7:20 am CDT
  • Sunset: 6:12 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 81°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 5mphSSW 207°
  • Humidity: 48%
  • UV index: 4
  • Sunrise: 7:21 am CDT
  • Sunset: 6:10 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 77°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 5mphSSW 202°
  • Humidity: 50%
  • UV index: 4
  • Sunrise: 7:23 am CDT
  • Sunset: 6:09 pm CDT
  • ▼
  • Tuesday
  • Oct 27, 2026
  • 77°F
  • 52°F
Mostly Cloudy
Mostly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 5mphS 172°
  • Humidity: 52%
  • UV index: 3
  • Sunrise: 7:24 am CDT
  • Sunset: 6:08 pm CDT
  • ▼
A combination of clear and cloud-filled weather is forecasted.
Rain is not anticipated in Chesterfield in the upcoming period.
Significant changes in temperature are expected in the upcoming period. Highs will range from 66.2°F to 80.6°F, while the nightly low temperatures will show also a considerable swing, as the overnight lows will vary from 37.4°F to 51.8°F.
The warmest days in Chesterfield will be Saturday and next Sunday, with a maximum of 80.6°F; today is the coldest day, with a maximum temperature of 66.2°F.
Updated: Oct 18, 2026 @ 05:45:01 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Today, sunny skies are in store, with excellent visibility.

Today, the maximum temperature will be 66.2°F, while the minimum temperature will be 37.4°F.
The maximum temperature will be in line with the average highest temperature of 66.4°F in October. The lowest temperature will be noticeably lower than the average low of 48.7°F.

On Sunday, in Chesterfield, sunrise will be at 7:14 am and sunset at 6:20 pm (CDT).

In Chesterfield, the length of the day today will be 11h and 5min.