Weather forecast for 10 daysVandalia, IL
Weather forecast for the weekend
Sunday Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 8mphSSE 162°
- Humidity: 49%
- UV index: 5
- Sunrise: 7:09 am CDT
- Sunset: 6:13 pm CDT
- details ▼
Tomorrow, in Vandalia, conditions remain stable and sunny, with little cloud presence.
A notable temperature range, reaching a high of a comfortable 66.2°F and a low of an icy 37.4°F, is predicted.
Tomorrow's highest temperature is forecasted to match the regular high for October at 65.1°F.
Sunrise will be at 7:09 am and sunset at 6:13 pm; tomorrow's daylight will last for 11h and 5min.
A notable temperature range, reaching a high of a comfortable 66.2°F and a low of an icy 37.4°F, is predicted.
Tomorrow's highest temperature is forecasted to match the regular high for October at 65.1°F.
Sunrise will be at 7:09 am and sunset at 6:13 pm; tomorrow's daylight will last for 11h and 5min.
10-day overview
Daily temperatures
Warmest day: Sunday 25.10. 81°C.
Coldest day: tomorrow 66°C.
Coldest day: tomorrow 66°C.
Chance of precipitation
Highest chance: 5%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 36°F
Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 2mphESE 122°
- Humidity: 79%
- UV index: 0
- Sunrise: 7:08 am CDT
- Sunset: 6:15 pm CDT
- details ▼
- Sunday
- Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 8mphSSE 162°
- Humidity: 49%
- UV index: 5
- Sunrise: 7:09 am CDT
- Sunset: 6:13 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 72°F
- 41°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 2mphSSE 159°
- Humidity: 48%
- UV index: 4
- Sunrise: 7:10 am CDT
- Sunset: 6:12 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 73°F
- 45°F
Mostly Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 3mphE 81°
- Humidity: 47%
- UV index: 4
- Sunrise: 7:11 am CDT
- Sunset: 6:11 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 75°F
- 43°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 2mphSSE 151°
- Humidity: 46%
- UV index: 4
- Sunrise: 7:12 am CDT
- Sunset: 6:09 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 77°F
- 45°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphNE 44°
- Humidity: 49%
- UV index: 4
- Sunrise: 7:13 am CDT
- Sunset: 6:08 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 77°F
- 46°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphESE 104°
- Humidity: 48%
- UV index: 4
- Sunrise: 7:14 am CDT
- Sunset: 6:06 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 79°F
- 46°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphSE 133°
- Humidity: 47%
- UV index: 4
- Sunrise: 7:15 am CDT
- Sunset: 6:05 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 81°F
- 48°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 5mphS 187°
- Humidity: 47%
- UV index: 4
- Sunrise: 7:16 am CDT
- Sunset: 6:04 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 79°F
- 46°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 5mphSE 143°
- Humidity: 47%
- UV index: 4
- Sunrise: 7:17 am CDT
- Sunset: 6:03 pm CDT
- details ▼
A combination of bright and cloud-filled weather is predicted.
Rain is not forecasted in Vandalia in the upcoming period.
Temperature differences will be noticeable over the next several days. Maximum temperatures are forecasted between 66.2°F and 80.6°F, while the lowest night temperatures will vary also significantly, as temperatures overnight will fluctuate from 35.6°F up to 48.2°F.
Next Sunday is expected to be the warmest, reaching up to 80.6°F; the lowest daytime temperature of the period will be reached on Sunday, peaking at 66.2°F.
Rain is not forecasted in Vandalia in the upcoming period.
Temperature differences will be noticeable over the next several days. Maximum temperatures are forecasted between 66.2°F and 80.6°F, while the lowest night temperatures will vary also significantly, as temperatures overnight will fluctuate from 35.6°F up to 48.2°F.
Next Sunday is expected to be the warmest, reaching up to 80.6°F; the lowest daytime temperature of the period will be reached on Sunday, peaking at 66.2°F.
Updated: Oct 18, 2026 @ 00:23:26 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, expect sunny weather with a crisp, clear sky.
Tomorrow, the maximum temperature will be 66.2°F, while the minimum temperature will be 37.4°F.
The highest temperature tomorrow will be in line with the average maximum temperature in October. The lowest temperature tomorrow will be noticeably lower than the average low of 48.6°F.
The highest temperature tomorrow will be in line with the average maximum temperature in October. The lowest temperature tomorrow will be noticeably lower than the average low of 48.6°F.
On Sunday, in Vandalia, sunrise will be at 7:09 am and sunset at 6:13 pm (CDT).
In Vandalia, tomorrow, there will be 11h and 5min of daylight.
