Weather forecast for 10 daysBallwin, MO

Weather forecast for the weekend

Saturday Oct 17, 2026

  • 59°F
  • 36°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphNNE 31°
  • Humidity: 42%
  • UV index: 5
  • Sunrise: 7:13 am CDT
  • Sunset: 6:21 pm CDT
  • ▼
Today, sunshine is expected with little to no cloud cover.
A temperature range of a refreshing 59°F to an icy 35.6°F is predicted.
It will feel colder, with a temperature more typical of November's average maximum of 53.8°F.
Sunrise was at 7:13 am and sunset will be at 6:21 pm; the daylight will last for 11h and 8min.

Sunday Oct 18, 2026

  • 66°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 7mphSSE 161°
  • Humidity: 51%
  • UV index: 5
  • Sunrise: 7:14 am CDT
  • Sunset: 6:19 pm CDT
  • ▼
Tomorrow, on Sunday, conditions remain stable and sunny, with little cloud presence.
The temperature is expected to vary significantly from a high of a comfortable 66.2°F to a low of an icy 37.4°F.
Tomorrow's high is expected to coincide with the typical October maximum of 66.6°F.
Sunrise will be at 7:14 am and sunset at 6:19 pm; tomorrow's daylight will last for 11h and 5min.

10-day overview

Daily temperatures

Warmest period: Saturday - Sunday 81°C.
Coldest day: today 59°C.

Chance of precipitation

Highest chance: Sunday 25.10. 13%.

Long-term weather forecast

  • Saturday
  • Oct 17, 2026
  • 59°F
  • 36°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphNNE 31°
  • Humidity: 42%
  • UV index: 5
  • Sunrise: 7:13 am CDT
  • Sunset: 6:21 pm CDT
  • ▼
  • Sunday
  • Oct 18, 2026
  • 66°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 7mphSSE 161°
  • Humidity: 51%
  • UV index: 5
  • Sunrise: 7:14 am CDT
  • Sunset: 6:19 pm CDT
  • ▼
  • Monday
  • Oct 19, 2026
  • 72°F
  • 41°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphSSE 157°
  • Humidity: 54%
  • UV index: 5
  • Sunrise: 7:15 am CDT
  • Sunset: 6:18 pm CDT
  • ▼
  • Tuesday
  • Oct 20, 2026
  • 73°F
  • 43°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 6%
  • Precipitation: 0"
  • Wind: 4mphSE 138°
  • Humidity: 52%
  • UV index: 5
  • Sunrise: 7:16 am CDT
  • Sunset: 6:17 pm CDT
  • ▼
  • Wednesday
  • Oct 21, 2026
  • 75°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 3mphS 185°
  • Humidity: 52%
  • UV index: 4
  • Sunrise: 7:17 am CDT
  • Sunset: 6:15 pm CDT
  • ▼
  • Thursday
  • Oct 22, 2026
  • 79°F
  • 45°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 4mphS 177°
  • Humidity: 50%
  • UV index: 4
  • Sunrise: 7:18 am CDT
  • Sunset: 6:14 pm CDT
  • ▼
  • Friday
  • Oct 23, 2026
  • 79°F
  • 45°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 6mphSE 130°
  • Humidity: 49%
  • UV index: 4
  • Sunrise: 7:19 am CDT
  • Sunset: 6:13 pm CDT
  • ▼
  • Saturday
  • Oct 24, 2026
  • 81°F
  • 48°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 6mphSE 146°
  • Humidity: 49%
  • UV index: 4
  • Sunrise: 7:20 am CDT
  • Sunset: 6:11 pm CDT
  • ▼
  • Sunday
  • Oct 25, 2026
  • 81°F
  • 50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 13%
  • Precipitation: 0"
  • Wind: 5mphSW 217°
  • Humidity: 53%
  • UV index: 4
  • Sunrise: 7:21 am CDT
  • Sunset: 6:10 pm CDT
  • ▼
  • Monday
  • Oct 26, 2026
  • 77°F
  • 52°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 7%
  • Precipitation: 0"
  • Wind: 5mphW 264°
  • Humidity: 57%
  • UV index: 4
  • Sunrise: 7:22 am CDT
  • Sunset: 6:09 pm CDT
  • ▼
Looking ahead to the next ten days, a combination of clear and cloud-filled weather is predicted.
Rainfall is not forecasted in Ballwin in the upcoming period.
Substantial differences in temperature are forecasted in the coming days. Maximum temperatures are forecasted between 59°F and 80.6°F, while the variation in nighttime lows will be also notably wide, as the overnight lows will vary from 35.6°F to 51.8°F.
Next Saturday and Sunday, with the highest temperature of 80.6°F, will be the warmest days in Ballwin; today is the coldest day, with a maximum temperature of 59°F.
Updated: Oct 17, 2026 @ 17:38:10 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

On Saturday, clear and sunny conditions are expected.

Today, the highest temperature will be 59°F, while the lowest temperature will be 35.6°F.
The highest temperature today will be relatively lower than the average maximum temperature in October. The lowest temperature today will be uncommonly lower than the average low of 48.9°F.

On Saturday, in Ballwin, sunrise was at 7:13 am and sunset will be at 6:21 pm (CDT).

In Ballwin, today, there will be 11h and 8min of daylight.

Tomorrow, the forecast calls for abundant sunshine.

Tomorrow, the maximum temperature will be 66.2°F, while the minimum temperature will be 37.4°F.
Tomorrow, the maximum temperature will be in line with the average highest temperature in October. The lowest temperature will be significantly lower than the average low of 48.9°F.

On Sunday, in Ballwin, sunrise will be at 7:14 am and sunset at 6:19 pm (CDT).

Tomorrow, the daylight will last for 11h and 5min.