Weather forecast for tomorrowFairfield, IL
Weather forecast for tomorrow
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 ▼
Tomorrow, on Sunday, the forecast calls for abundant sunshine.
Substantial temperature variations are forecasted, soaring to a maximum of an enjoyable 66.2°F and descending to a minimum of a wintry 37.4°F.
The forecasted high for tomorrow will reflect the normal October maximum 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.
Substantial temperature variations are forecasted, soaring to a maximum of an enjoyable 66.2°F and descending to a minimum of a wintry 37.4°F.
The forecasted high for tomorrow will reflect the normal October maximum 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.
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:41°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 0mphN 0°
- Humidity: 74%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 41°F
- Feels like:41°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 1mphESE 104°
- Humidity: 78%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 39°F
- Feels like:39°F
Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 1mphESE 118°
- Humidity: 83%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 37°F
- Feels like:37°F
Clear
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 1mphSE 130°
- Humidity: 87%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:05 am
- 8 am
- 41°F
- Feels like:41°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 1mphSE 127°
- Humidity: 84%
- Pressure: 30.53"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 52°F
- Feels like:50°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphSE 136°
- Humidity: 57%
- Pressure: 30.53"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 59°F
- Feels like:59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphSE 135°
- Humidity: 42%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 5
- details ▼
- 2 pm
- 63°F
- Feels like:63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphSE 142°
- Humidity: 34%
- Pressure: 30.42"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 64°F
- Feels like:64°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphSE 138°
- Humidity: 31%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 59°F
- Feels like:59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphSE 127°
- Humidity: 41%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:11 pm
- 8 pm
- 52°F
- Feels like:52°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 1mphESE 115°
- Humidity: 62%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 48°F
- Feels like:48°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 1mphSE 124°
- Humidity: 71%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, sunny conditions are likely to prevail.
The temperature will vary between the lowest temperature of 37.4°F and the highest temperature of 64.4°F. The warmest part of the day will be at 3 pm and 4 pm.
Tomorrow, the maximum will be consistent with October's typical high. The minimum temperature tomorrow will be more consistent with November's average low of 38.1°F than October's average of 49.6°F.
The temperature will vary between the lowest temperature of 37.4°F and the highest temperature of 64.4°F. The warmest part of the day will be at 3 pm and 4 pm.
Tomorrow, the maximum will be consistent with October's typical high. The minimum temperature tomorrow will be more consistent with November's average low of 38.1°F than October's average of 49.6°F.
Updated: Oct 18, 2026 @ 00:19:11 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, sunny conditions are expected to continue.
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 will be significantly 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 will be significantly 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.
