Weather forecast for 10 daysSimpson, IL
Weather forecast for the weekend
Sunday Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphESE 123°
- Humidity: 53%
- UV index: 5
- Sunrise: 7:06 am CDT
- Sunset: 6:14 pm CDT
- details ▼
Tomorrow, on Sunday, October 18, sunshine and minimal clouds are also in the outlook.
Day and night temperatures will contrast sharply, ranging from a peak of an enjoyable 66.2°F to a low of an icy 37.4°F.
This forecasted maximum temperature is expected to mirror October's typical high of 67.8°F.
Sunrise will be at 7:06 am and sunset at 6:14 pm; tomorrow's daylight will last for 11h and 8min.
Day and night temperatures will contrast sharply, ranging from a peak of an enjoyable 66.2°F to a low of an icy 37.4°F.
This forecasted maximum temperature is expected to mirror October's typical high of 67.8°F.
Sunrise will be at 7:06 am and sunset at 6:14 pm; tomorrow's daylight will last for 11h and 8min.
10-day overview
Daily temperatures
Warmest period: Saturday - Sunday 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: 5%
- Precipitation: 0"
- Wind: 1mphENE 73°
- Humidity: 82%
- UV index: 0
- Sunrise: 7:05 am CDT
- Sunset: 6:15 pm CDT
- details ▼
- Sunday
- Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphESE 123°
- Humidity: 53%
- UV index: 5
- Sunrise: 7:06 am CDT
- Sunset: 6:14 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 72°F
- 41°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 2mphSSE 168°
- Humidity: 52%
- UV index: 5
- Sunrise: 7:07 am CDT
- Sunset: 6:12 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 73°F
- 43°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 4mphNE 50°
- Humidity: 48%
- UV index: 5
- Sunrise: 7:08 am CDT
- Sunset: 6:11 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 75°F
- 43°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphNE 35°
- Humidity: 48%
- UV index: 5
- Sunrise: 7:09 am CDT
- Sunset: 6:10 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 75°F
- 43°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 5mphNNE 24°
- Humidity: 50%
- UV index: 5
- Sunrise: 7:10 am CDT
- Sunset: 6:08 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 77°F
- 45°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 6mphENE 65°
- Humidity: 48%
- UV index: 5
- Sunrise: 7:11 am CDT
- Sunset: 6:07 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 81°F
- 46°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphSE 124°
- Humidity: 46%
- UV index: 4
- Sunrise: 7:12 am CDT
- Sunset: 6:06 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 81°F
- 48°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 5mphSSW 208°
- Humidity: 49%
- UV index: 4
- Sunrise: 7:13 am CDT
- Sunset: 6:05 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 79°F
- 46°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 5mphNE 34°
- Humidity: 48%
- UV index: 4
- Sunrise: 7:14 am CDT
- Sunset: 6:03 pm CDT
- details ▼
Ten-day trends indicate that a combination of dry and sunny and overcast weather is expected.
Rainfall is not anticipated in Simpson in the upcoming days.
Temperature fluctuation will be noticeable in the upcoming days. The maximum temperature will vary between 66.2°F and 80.6°F, while the lowest nightly temperature differences will be also quite pronounced, as the lowest temperatures will be recorded between 35.6°F and 48.2°F.
With a maximum temperature of 80.6°F, next Saturday and Sunday will be the warmest days in Simpson, Illinois; expect the coldest day on Sunday with a high of 66.2°F.
Rainfall is not anticipated in Simpson in the upcoming days.
Temperature fluctuation will be noticeable in the upcoming days. The maximum temperature will vary between 66.2°F and 80.6°F, while the lowest nightly temperature differences will be also quite pronounced, as the lowest temperatures will be recorded between 35.6°F and 48.2°F.
With a maximum temperature of 80.6°F, next Saturday and Sunday will be the warmest days in Simpson, Illinois; expect the coldest day on Sunday with a high of 66.2°F.
Updated: Oct 17, 2026 @ 23:59:18 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
Tomorrow, in Simpson, expect bright skies and plenty of sunshine.
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 will be significantly lower than the average low of 49.6°F.
The highest temperature tomorrow will be in line with the average maximum temperature in October. The lowest temperature will be significantly lower than the average low of 49.6°F.
On Sunday, in Simpson, sunrise will be at 7:06 am and sunset at 6:14 pm (CDT).
In Simpson, tomorrow, there will be 11h and 8min of daylight.
