Weather forecast for 10 daysFairfield, IL
Weather forecast for the weekend
Sunday Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 6mphSE 136°
- Humidity: 50%
- UV index: 5
- Sunrise: 7:05 am CDT
- Sunset: 6:11 pm CDT
- details ▼
On Sunday, October 18, sunshine and minimal clouds are also in the outlook.
Temperatures are set to span a considerable range, with a high of a comfortable 66.2°F and a low of a cold 37.4°F.
The forecasted high temperature will align with October's average of 66.7°F.
Sunrise will be at 7:05 am and sunset at 6:11 pm; tomorrow's daylight will last for 11h and 6min.
Temperatures are set to span a considerable range, with a high of a comfortable 66.2°F and a low of a cold 37.4°F.
The forecasted high temperature will align with October's average of 66.7°F.
Sunrise will be at 7:05 am and sunset at 6:11 pm; tomorrow's daylight will last for 11h and 6min.
10-day overview
Daily temperatures
Warmest period: Sunday - Monday 79°C.
Coldest day: tomorrow 66°C.
Coldest day: tomorrow 66°C.
Chance of precipitation
Highest chance: 6%.
Long-term weather forecast
- Saturday
- Oct 17, 2026
- min.
- 36°F
Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 3mphENE 63°
- Humidity: 68%
- UV index: 0
- Sunrise: 7:04 am CDT
- Sunset: 6:12 pm CDT
- details ▼
- Sunday
- Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 6mphSE 136°
- Humidity: 50%
- UV index: 5
- Sunrise: 7:05 am CDT
- Sunset: 6:11 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 72°F
- 41°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 1mphSE 127°
- Humidity: 49%
- UV index: 5
- Sunrise: 7:06 am CDT
- Sunset: 6:10 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 73°F
- 43°F
Mostly Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 2mphENE 59°
- Humidity: 47%
- UV index: 5
- Sunrise: 7:07 am CDT
- Sunset: 6:08 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 75°F
- 41°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 2mphENE 60°
- Humidity: 47%
- UV index: 4
- Sunrise: 7:08 am CDT
- Sunset: 6:07 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 75°F
- 43°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 4mphNE 36°
- Humidity: 50%
- UV index: 4
- Sunrise: 7:09 am CDT
- Sunset: 6:06 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 75°F
- 46°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 4mphE 82°
- Humidity: 46%
- UV index: 4
- Sunrise: 7:10 am CDT
- Sunset: 6:04 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 77°F
- 45°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 4mphESE 113°
- Humidity: 46%
- UV index: 4
- Sunrise: 7:11 am CDT
- Sunset: 6:03 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 79°F
- 48°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 4mphSSE 167°
- Humidity: 47%
- UV index: 4
- Sunrise: 7:12 am CDT
- Sunset: 6:02 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 79°F
- 46°F
Partly Cloudy
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 5mphE 89°
- Humidity: 48%
- UV index: 4
- Sunrise: 7:13 am CDT
- Sunset: 6:01 pm CDT
- details ▼
During the upcoming ten-day period, a combination of sun-filled and cloudy weather is expected.
Rainfall is not forecasted in Fairfield in the upcoming period.
Substantial differences in temperature are forecasted in the upcoming days. Highs will range from 66.2°F to 78.8°F, while the difference in minimum temperatures will be also substantial, as temperatures overnight will fluctuate from 35.6°F up to 48.2°F.
Next Sunday and Monday, with the highest temperature of 78.8°F, will be the warmest days in Fairfield; the lowest daytime temperature of the period will be reached on Sunday, peaking at 66.2°F.
Rainfall is not forecasted in Fairfield in the upcoming period.
Substantial differences in temperature are forecasted in the upcoming days. Highs will range from 66.2°F to 78.8°F, while the difference in minimum temperatures will be also substantial, as temperatures overnight will fluctuate from 35.6°F up to 48.2°F.
Next Sunday and Monday, with the highest temperature of 78.8°F, will be the warmest days in Fairfield; the lowest daytime temperature of the period will be reached on Sunday, peaking at 66.2°F.
Updated: Oct 17, 2026 @ 22:02:35 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, in Fairfield, expect sunny weather with a crisp, clear sky.
Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 37.4°F.
Tomorrow, the highest temperature will be in line with the average maximum temperature in October. The lowest temperature tomorrow will be notably lower than the average low of 49.6°F.
Tomorrow, the highest temperature will be in line with the average maximum temperature in October. The lowest temperature tomorrow will be notably lower than the average low of 49.6°F.
On Sunday, in Fairfield, sunrise will be at 7:05 am and sunset at 6:11 pm (CDT).
In Fairfield, tomorrow, there will be 11h and 6min of daylight.
