Weather forecast for tomorrowIlliopolis, IL
Weather forecast for tomorrow
Monday Oct 19, 2026
- 72°F
- 39°F
Mostly Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphSSE 160°
- Humidity: 50%
- UV index: 4
- Sunrise: 7:11 am CDT
- Sunset: 6:11 pm CDT
- details ▼
Tomorrow, in Illiopolis, blue skies and warm sunshine will define the conditions.
The day's temperature range will span from a high of a delightful 71.6°F to a minimum of a wintry 39.2°F.
The anticipated high is warmer and better reflects September's normal temperature profile than that of October.
Sunrise will be at 7:11 am and sunset at 6:11 pm; tomorrow's daylight will last for 11h and 0min.
The day's temperature range will span from a high of a delightful 71.6°F to a minimum of a wintry 39.2°F.
The anticipated high is warmer and better reflects September's normal temperature profile than that of October.
Sunrise will be at 7:11 am and sunset at 6:11 pm; tomorrow's daylight will last for 11h and 0min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 70°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
- 45°F
- Feels like:41°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 5mphSSE 166°
- Humidity: 76%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 43°F
- Feels like:39°F
Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 4mphSSE 160°
- Humidity: 81%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 39°F
- Feels like:37°F
Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 3mphS 171°
- Humidity: 87%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 37°F
- Feels like:37°F
Clear
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 3mphSSE 165°
- Humidity: 89%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:11 am
- 8 am
- 41°F
- Feels like:41°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 2mphSSE 155°
- Humidity: 86%
- Pressure: 30.42"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 55°F
- Feels like:55°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 3mphS 169°
- Humidity: 57%
- Pressure: 30.42"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 64°F
- Feels like:64°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphSSE 168°
- Humidity: 40%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 2 pm
- 68°F
- Feels like:68°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphSSE 164°
- Humidity: 33%
- Pressure: 30.33"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 70°F
- Feels like:70°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphSSE 164°
- Humidity: 30%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 63°F
- Feels like:63°F
Mostly Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 3mphSE 135°
- Humidity: 41%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:11 pm
- 8 pm
- 54°F
- Feels like:54°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphESE 103°
- Humidity: 62%
- Pressure: 30.3"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 50°F
- Feels like:50°F
Partly Cloudy
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 3mphESE 102°
- Humidity: 72%
- Pressure: 30.33"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Monday, primarily sunny and occasionally gloomy weather is forecasted.
The temperature will vary between the lowest temperature of 37.4°F and the highest temperature of 69.8°F. The warmest part of the day will be at 3 pm and 4 pm.
The temperature will feel more in line with September's average high than the expected maximum for October. The lowest temperature is more alike with November's average minimum of 36°F than the usual minimum of 47.8°F in October.
The temperature will vary between the lowest temperature of 37.4°F and the highest temperature of 69.8°F. The warmest part of the day will be at 3 pm and 4 pm.
The temperature will feel more in line with September's average high than the expected maximum for October. The lowest temperature is more alike with November's average minimum of 36°F than the usual minimum of 47.8°F in October.
Updated: Oct 18, 2026 @ 05:09:25 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 Monday, a crisp, sunny atmosphere is likely.
Tomorrow, the maximum temperature will be 71.6°F, while the minimum temperature will be 39.2°F.
The maximum temperature will be slightly warmer than the average highest temperature of 63.9°F in October. The lowest temperature will be also relatively lower than the average low of 47.8°F.
The maximum temperature will be slightly warmer than the average highest temperature of 63.9°F in October. The lowest temperature will be also relatively lower than the average low of 47.8°F.
On Monday, in Illiopolis, sunrise will be at 7:11 am and sunset at 6:11 pm (CDT).
In Illiopolis, tomorrow, there will be 11h and 0min of daylight.
