Weather forecast for 10 daysOld Saint Louis, IN
Weather forecast for the weekend
Sunday Oct 18, 2026
- 66°F
- 36°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 7mphSSE 148°
- Humidity: 55%
- UV index: 4
- Sunrise: 7:56 am EDT
- Sunset: 7:00 pm EDT
- details ▼
On Sunday, in Old Saint Louis, sunny skies are in store, with excellent visibility.
Considerable temperature fluctuations from a high of a breezy 66.2°F to a low of a wintry 35.6°F are forecasted.
The high is anticipated to coincide with October's normal of 64.6°F.
Sunrise will be at 7:56 am and sunset at 7:00 pm; the daylight will last for 11h and 4min.
Considerable temperature fluctuations from a high of a breezy 66.2°F to a low of a wintry 35.6°F are forecasted.
The high is anticipated to coincide with October's normal of 64.6°F.
Sunrise will be at 7:56 am and sunset at 7:00 pm; the daylight will last for 11h and 4min.
10-day overview
Daily temperatures
Warmest period: Saturday - Tuesday 73°C.
Coldest day: today 66°C.
Coldest day: today 66°C.
Chance of precipitation
Highest chance: Wednesday - Thursday 7%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 66°F
- 36°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 7mphSSE 148°
- Humidity: 55%
- UV index: 4
- Sunrise: 7:56 am EDT
- Sunset: 7:00 pm EDT
- details ▼
- Monday
- Oct 19, 2026
- 70°F
- 37°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 2mphE 82°
- Humidity: 54%
- UV index: 4
- Sunrise: 7:57 am EDT
- Sunset: 6:58 pm EDT
- details ▼
- Tuesday
- Oct 20, 2026
- 72°F
- 39°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 5mphNE 51°
- Humidity: 54%
- UV index: 4
- Sunrise: 7:58 am EDT
- Sunset: 6:57 pm EDT
- details ▼
- Wednesday
- Oct 21, 2026
- 72°F
- 39°F
Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 5mphNNE 22°
- Humidity: 60%
- UV index: 4
- Sunrise: 7:59 am EDT
- Sunset: 6:56 pm EDT
- details ▼
- Thursday
- Oct 22, 2026
- 72°F
- 43°F
Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 6mphNE 35°
- Humidity: 60%
- UV index: 4
- Sunrise: 8:00 am EDT
- Sunset: 6:54 pm EDT
- details ▼
- Friday
- Oct 23, 2026
- 72°F
- 39°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 7mphENE 75°
- Humidity: 59%
- UV index: 4
- Sunrise: 8:01 am EDT
- Sunset: 6:53 pm EDT
- details ▼
- Saturday
- Oct 24, 2026
- 73°F
- 39°F
Mostly Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 6mphESE 110°
- Humidity: 59%
- UV index: 4
- Sunrise: 8:02 am EDT
- Sunset: 6:51 pm EDT
- details ▼
- Sunday
- Oct 25, 2026
- 73°F
- 43°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 4mphSSE 160°
- Humidity: 54%
- UV index: 4
- Sunrise: 8:03 am EDT
- Sunset: 6:50 pm EDT
- details ▼
- Monday
- Oct 26, 2026
- 73°F
- 46°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 5mphSSW 194°
- Humidity: 54%
- UV index: 4
- Sunrise: 8:04 am EDT
- Sunset: 6:49 pm EDT
- details ▼
- Tuesday
- Oct 27, 2026
- 73°F
- 45°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 7mphENE 78°
- Humidity: 53%
- UV index: 4
- Sunrise: 8:05 am EDT
- Sunset: 6:48 pm EDT
- details ▼
Forecasts for the ten-day outlook show that a combination of dry and sunny and gloomy weather is forecasted.
Rainfall is not anticipated in Old Saint Louis in the upcoming period.
In the upcoming period, the highest temperature will range between 66.2°F and 73.4°F, while nighttime temperatures are expected to vary from 35.6°F to 46.4°F.
The warmest days will be Saturday through next Tuesday, with a maximum of 73.4°F; today is the coldest day, with a maximum temperature of 66.2°F.
Rainfall is not anticipated in Old Saint Louis in the upcoming period.
In the upcoming period, the highest temperature will range between 66.2°F and 73.4°F, while nighttime temperatures are expected to vary from 35.6°F to 46.4°F.
The warmest days will be Saturday through next Tuesday, with a maximum of 73.4°F; today is the coldest day, with a maximum temperature of 66.2°F.
Updated: Oct 18, 2026 @ 10:55:46 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, in Old Saint Louis, conditions remain stable and sunny, with little cloud presence.
Today, the maximum temperature will be 66.2°F, while the minimum temperature will be 35.6°F.
The maximum temperature will be in line with the average highest temperature of 64.6°F in October. The lowest temperature will be notably lower than the average low of 47.3°F.
The maximum temperature will be in line with the average highest temperature of 64.6°F in October. The lowest temperature will be notably lower than the average low of 47.3°F.
On Sunday, in Old Saint Louis, sunrise will be at 7:56 am and sunset at 7:00 pm (EDT).
Today, the daylight will last for 11h and 4min.
