Weather forecast for 10 daysSaint Clair, MO
Weather forecast for the weekend
Sunday Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 5mphSSE 168°
- Humidity: 53%
- UV index: 5
- Sunrise: 7:16 am CDT
- Sunset: 6:22 pm CDT
- details ▼
Tomorrow, uninterrupted sunshine is anticipated.
A high of a breezy 66.2°F during the day contrasts markedly with a low of an icy 37.4°F at night.
The forecasted peak temperature will reflect the average October high of 66.6°F.
Sunrise will be at 7:16 am and sunset at 6:22 pm; tomorrow's daylight will last for 11h and 6min.
A high of a breezy 66.2°F during the day contrasts markedly with a low of an icy 37.4°F at night.
The forecasted peak temperature will reflect the average October high of 66.6°F.
Sunrise will be at 7:16 am and sunset at 6:22 pm; tomorrow's daylight will last for 11h and 6min.
10-day overview
Daily temperatures
Warmest day: Sunday 25.10. 82°C.
Coldest day: tomorrow 66°C.
Coldest day: tomorrow 66°C.
Chance of precipitation
Highest chance: Monday 6%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 36°F
Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 2mphSSE 157°
- Humidity: 89%
- UV index: 0
- Sunrise: 7:15 am CDT
- Sunset: 6:23 pm CDT
- details ▼
- Sunday
- Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 5mphSSE 168°
- Humidity: 53%
- UV index: 5
- Sunrise: 7:16 am CDT
- Sunset: 6:22 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 72°F
- 39°F
Mostly Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 3mphSSE 165°
- Humidity: 56%
- UV index: 5
- Sunrise: 7:17 am CDT
- Sunset: 6:20 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 73°F
- 43°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphSE 145°
- Humidity: 56%
- UV index: 5
- Sunrise: 7:18 am CDT
- Sunset: 6:19 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 75°F
- 43°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 2mphSSW 194°
- Humidity: 52%
- UV index: 4
- Sunrise: 7:19 am CDT
- Sunset: 6:17 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 77°F
- 45°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphSSE 168°
- Humidity: 54%
- UV index: 4
- Sunrise: 7:20 am CDT
- Sunset: 6:16 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 79°F
- 48°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphSE 145°
- Humidity: 52%
- UV index: 4
- Sunrise: 7:21 am CDT
- Sunset: 6:15 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 81°F
- 50°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 6mphSSE 164°
- Humidity: 50%
- UV index: 4
- Sunrise: 7:22 am CDT
- Sunset: 6:14 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 82°F
- 52°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 5mphSSW 211°
- Humidity: 49%
- UV index: 4
- Sunrise: 7:23 am CDT
- Sunset: 6:12 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 77°F
- 50°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 5mphS 191°
- Humidity: 51%
- UV index: 4
- Sunrise: 7:24 am CDT
- Sunset: 6:11 pm CDT
- details ▼
Forecasts for the ten-day outlook show that a combination of overcast and sun-filled weather is predicted.
Rain is not forecasted in Saint Clair in the upcoming days.
Temperature variation will be noticeable in the next ten days. Forecast highs will fluctuate between 66.2°F and 82.4°F, while the fluctuation in night temperatures will be also significant, as the lowest temperatures will be recorded between 35.6°F and 51.8°F.
Expect the warmest day on next Sunday, with temperatures peaking at 82.4°F; the coldest day will be Sunday, with a maximum of 66.2°F.
Rain is not forecasted in Saint Clair in the upcoming days.
Temperature variation will be noticeable in the next ten days. Forecast highs will fluctuate between 66.2°F and 82.4°F, while the fluctuation in night temperatures will be also significant, as the lowest temperatures will be recorded between 35.6°F and 51.8°F.
Expect the warmest day on next Sunday, with temperatures peaking at 82.4°F; the coldest day will be Sunday, with a maximum of 66.2°F.
Updated: Oct 18, 2026 @ 01:54:02 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 Sunday, clear and sunny conditions are expected.
Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 37.4°F.
Tomorrow, the highest temperature will be in line with the average maximum temperature in October. Tomorrow, the lowest temperature will be significantly lower than the average low of 48.2°F.
Tomorrow, the highest temperature will be in line with the average maximum temperature in October. Tomorrow, the lowest temperature will be significantly lower than the average low of 48.2°F.
On Sunday, in Saint Clair, sunrise will be at 7:16 am and sunset at 6:22 pm (CDT).
In Saint Clair, tomorrow, there will be 11h and 6min of daylight.
