Weather forecast for 10 daysSaint Augustine, IL
Weather forecast for the weekend
Sunday Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 12mphS 186°
- Humidity: 56%
- UV index: 4
- Sunrise: 7:16 am CDT
- Sunset: 6:17 pm CDT
- details ▼
Tomorrow, on Sunday, October 18, sun-filled conditions are expected to persist.
Temperatures will show considerable variation, extending from a high of a comfortable 66.2°F to a low of an icy 37.4°F.
Anticipated temperatures are trending a few degrees higher than October's climate norm of 61.7°F.
Sunrise will be at 7:16 am and sunset at 6:17 pm; tomorrow's daylight will last for 11h and 1min.
Temperatures will show considerable variation, extending from a high of a comfortable 66.2°F to a low of an icy 37.4°F.
Anticipated temperatures are trending a few degrees higher than October's climate norm of 61.7°F.
Sunrise will be at 7:16 am and sunset at 6:17 pm; tomorrow's daylight will last for 11h and 1min.
10-day overview
Daily temperatures
Warmest period: Thursday - Saturday 75°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.
- 37°F
Clear
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 5mphS 182°
- Humidity: 80%
- UV index: 0
- Sunrise: 7:15 am CDT
- Sunset: 6:18 pm CDT
- details ▼
- Sunday
- Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 12mphS 186°
- Humidity: 56%
- UV index: 4
- Sunrise: 7:16 am CDT
- Sunset: 6:17 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 70°F
- 39°F
Mostly Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 4mphSSE 166°
- Humidity: 58%
- UV index: 4
- Sunrise: 7:17 am CDT
- Sunset: 6:15 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 72°F
- 41°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphSE 127°
- Humidity: 55%
- UV index: 4
- Sunrise: 7:18 am CDT
- Sunset: 6:14 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 73°F
- 45°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphS 176°
- Humidity: 57%
- UV index: 4
- Sunrise: 7:19 am CDT
- Sunset: 6:12 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 75°F
- 46°F
Mostly Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 3mphSE 138°
- Humidity: 57%
- UV index: 4
- Sunrise: 7:20 am CDT
- Sunset: 6:11 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 75°F
- 48°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 7mphSE 135°
- Humidity: 56%
- UV index: 4
- Sunrise: 7:21 am CDT
- Sunset: 6:09 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 75°F
- 52°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 9mphSSE 156°
- Humidity: 56%
- UV index: 3
- Sunrise: 7:23 am CDT
- Sunset: 6:08 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 73°F
- 48°F
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 6mphSSW 197°
- Humidity: 58%
- UV index: 3
- Sunrise: 7:24 am CDT
- Sunset: 6:07 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 72°F
- 48°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 6mphESE 105°
- Humidity: 58%
- UV index: 4
- Sunrise: 7:25 am CDT
- Sunset: 6:05 pm CDT
- details ▼
Looking ahead to the next ten days, a combination of dry and sunny and gloomy weather is predicted.
Rain is not anticipated in Saint Augustine in the upcoming period.
In the upcoming period, the highest temperature will vary between 66.2°F and 75.2°F, while the difference in minimum temperatures will be substantial, as temperatures overnight will fluctuate from 37.4°F up to 51.8°F.
The warmest days will be Thursday through next Saturday, with a maximum of 75.2°F; expect the coldest day on Sunday with a high of 66.2°F.
Rain is not anticipated in Saint Augustine in the upcoming period.
In the upcoming period, the highest temperature will vary between 66.2°F and 75.2°F, while the difference in minimum temperatures will be substantial, as temperatures overnight will fluctuate from 37.4°F up to 51.8°F.
The warmest days will be Thursday through next Saturday, with a maximum of 75.2°F; expect the coldest day on Sunday with a high of 66.2°F.
Updated: Oct 18, 2026 @ 03:12:50 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, conditions will remain bright with clear skies.
Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 37.4°F.
Tomorrow, the highest temperature will be relatively higher than the average maximum temperature in October. The lowest temperature will be also slightly cooler than the average low of 45.7°F.
Tomorrow, the highest temperature will be relatively higher than the average maximum temperature in October. The lowest temperature will be also slightly cooler than the average low of 45.7°F.
On Sunday, in Saint Augustine, sunrise will be at 7:16 am and sunset at 6:17 pm (CDT).
In Saint Augustine, Illinois, the length of the day tomorrow will be 11h and 1min.
