Weather forecast for tomorrowSaint Augustine, IL
Weather forecast for tomorrow
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.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 64°C.
Coldest hour: 6 am 37°C.
Coldest hour: 6 am 37°C.
Chance of precipitation
Highest chance: 6 am 5%.
Hourly weather forecast
- 12 am
- 41°F
- Feels like:39°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphS 180°
- Humidity: 75%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 39°F
- Feels like:36°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphS 182°
- Humidity: 81%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 39°F
- Feels like:36°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 5mphS 184°
- Humidity: 85%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 37°F
- Feels like:34°F
Clear
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 5mphS 181°
- Humidity: 87%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:16 am
- 8 am
- 41°F
- Feels like:36°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 6mphS 183°
- Humidity: 86%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 52°F
- Feels like:48°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 10mphS 188°
- Humidity: 63%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 59°F
- Feels like:57°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 12mphSSW 192°
- Humidity: 49%
- Pressure: 30.42"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 2 pm
- 63°F
- Feels like:63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 11mphSSW 192°
- Humidity: 42%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 64°F
- Feels like:63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 11mphS 184°
- Humidity: 41%
- Pressure: 30.33"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 59°F
- Feels like:59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphS 171°
- Humidity: 48%
- Pressure: 30.33"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:17 pm
- 8 pm
- 50°F
- Feels like:48°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphS 170°
- Humidity: 67%
- Pressure: 30.33"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 46°F
- Feels like:45°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 5mphS 172°
- Humidity: 75%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, mostly cloudless and sunny weather is anticipated.
The temperature will be between a minimum of 37.4°F and a maximum of 64.4°F. The warmest part of the day will be at 3 pm and 4 pm.
The temperature is expected to be relatively higher than the average peak in October, which is 61.7°F. The expected low will be more alike with what’s common in November than the current October average of 45.7°F.
The temperature will be between a minimum of 37.4°F and a maximum of 64.4°F. The warmest part of the day will be at 3 pm and 4 pm.
The temperature is expected to be relatively higher than the average peak in October, which is 61.7°F. The expected low will be more alike with what’s common in November than the current October average of 45.7°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.
