Weather forecast for tomorrowSaint Charles, MO
Weather forecast for tomorrow
Monday Oct 19, 2026
- 72°F
- 45°F
Mostly Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 4mphSSE 161°
- Humidity: 51%
- UV index: 5
- Sunrise: 7:15 am CDT
- Sunset: 6:18 pm CDT
- details ▼
Tomorrow, a pleasant, mostly sunny outlook is in place.
Significant variations in temperature are forecasted, peaking at a pleasant 71.6°F and dropping to a low of a chilly 44.6°F.
The high temperature will be a few degrees higher than the typical October level of 66°F.
Sunrise will be at 7:15 am and sunset at 6:18 pm; tomorrow's daylight will last for 11h and 2min.
Significant variations in temperature are forecasted, peaking at a pleasant 71.6°F and dropping to a low of a chilly 44.6°F.
The high temperature will be a few degrees higher than the typical October level of 66°F.
Sunrise will be at 7:15 am and sunset at 6:18 pm; tomorrow's daylight will last for 11h and 2min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 70°C.
Coldest hour: 6 am 41°C.
Coldest hour: 6 am 41°C.
Chance of precipitation
Highest chance: 6 am 6%.
Hourly weather forecast
- 12 am
- 48°F
- Feels like:46°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 3mphSSE 160°
- Humidity: 77%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 45°F
- Feels like:45°F
Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 2mphSSE 165°
- Humidity: 83%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 43°F
- Feels like:43°F
Clear
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 2mphS 186°
- Humidity: 92%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 41°F
- Feels like:41°F
Clear
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 1mphSSE 161°
- Humidity: 94%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:15 am
- 8 am
- 45°F
- Feels like:45°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 2mphSSE 155°
- Humidity: 88%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 55°F
- Feels like:55°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 3mphSSE 165°
- Humidity: 60%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 64°F
- Feels like:64°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphS 181°
- Humidity: 40%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 2 pm
- 70°F
- Feels like:70°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphSSE 166°
- Humidity: 34%
- Pressure: 30.33"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 70°F
- Feels like:70°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphSSE 157°
- Humidity: 32%
- Pressure: 30.27"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 66°F
- Feels like:66°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphESE 114°
- Humidity: 41%
- Pressure: 30.27"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:18 pm
- 8 pm
- 59°F
- Feels like:59°F
Partly Cloudy
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphE 90°
- Humidity: 58%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 55°F
- Feels like:55°F
Mostly Cloudy
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphE 83°
- Humidity: 68%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Monday, a combination of sun-filled and cloud-filled weather is expected.
The temperature will be between a minimum of 41°F and a maximum of 69.8°F. The warmest part of the day will be from 2 pm to 5 pm.
The temperature is expected to be relatively higher than the average peak in October, which is 66°F. The nighttime low will be also moderately lower than the typical October minimum temperature of 49.5°F.
The temperature will be between a minimum of 41°F and a maximum of 69.8°F. The warmest part of the day will be from 2 pm to 5 pm.
The temperature is expected to be relatively higher than the average peak in October, which is 66°F. The nighttime low will be also moderately lower than the typical October minimum temperature of 49.5°F.
Updated: Oct 18, 2026 @ 17:46:44 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Monday, a pleasant, mostly sunny outlook is in place.
Tomorrow, the maximum temperature will be 71.6°F, while the minimum temperature will be 44.6°F.
The maximum temperature will be relatively higher than the average highest temperature of 66°F in October. The lowest temperature will be also relatively lower than the average low of 49.5°F.
The maximum temperature will be relatively higher than the average highest temperature of 66°F in October. The lowest temperature will be also relatively lower than the average low of 49.5°F.
On Monday, in Saint Charles, sunrise will be at 7:15 am and sunset at 6:18 pm (CDT).
In Saint Charles, tomorrow, there will be 11h and 2min of daylight.
