Weather forecast for tomorrowGrafton, IL
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 9mphSSE 159°
- Humidity: 49%
- UV index: 5
- Sunrise: 7:14 am CDT
- Sunset: 6:19 pm CDT
- details ▼
On Sunday, in Grafton, sunshine and minimal clouds are in the outlook.
Daytime will experience a high of a breezy 66.2°F, significantly differing from the anticipated night low of an icy 37.4°F.
Tomorrow's peak is expected to reflect the usual October high temperature of 65.8°F.
Sunrise will be at 7:14 am and sunset at 6:19 pm; tomorrow's daylight will last for 11h and 5min.
Daytime will experience a high of a breezy 66.2°F, significantly differing from the anticipated night low of an icy 37.4°F.
Tomorrow's peak is expected to reflect the usual October high temperature of 65.8°F.
Sunrise will be at 7:14 am and sunset at 6:19 pm; tomorrow's daylight will last for 11h and 5min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 64°C.
Coldest hour: 6 am 39°C.
Coldest hour: 6 am 39°C.
Chance of precipitation
Highest chance: 6 am 5%.
Hourly weather forecast
- 12 am
- 43°F
- Feels like:43°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphESE 113°
- Humidity: 87%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 41°F
- Feels like:39°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphSE 131°
- Humidity: 84%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 39°F
- Feels like:37°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 4mphSE 135°
- Humidity: 87%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 39°F
- Feels like:36°F
Clear
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 4mphSE 130°
- Humidity: 88%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:14 am
- 8 am
- 43°F
- Feels like:39°F
Sunny
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 4mphSE 133°
- Humidity: 83%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 54°F
- Feels like:50°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphSSE 160°
- Humidity: 54%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 59°F
- Feels like:59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 8mphS 175°
- Humidity: 39%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 2 pm
- 64°F
- Feels like:64°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 8mphSSE 168°
- Humidity: 34%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 4 pm
- 64°F
- Feels like:64°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphSSE 165°
- Humidity: 32%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 61°F
- Feels like:61°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 6mphSE 146°
- Humidity: 41%
- Pressure: 30.33"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:19 pm
- 8 pm
- 52°F
- Feels like:52°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphESE 121°
- Humidity: 65%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 50°F
- Feels like:48°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 4mphSE 130°
- Humidity: 73%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Sunday, bright skies and dry conditions are anticipated.
The temperature will be between a minimum of 39.2°F and a maximum of 64.4°F. The warmest part of the day will be from 2 pm to 5 pm.
The forecasted high will be comparable to the typical October maximum of 65.8°F. The lowest temperature tomorrow is more in line with November's average minimum of 37.6°F than the average low in October of 48.6°F.
The temperature will be between a minimum of 39.2°F and a maximum of 64.4°F. The warmest part of the day will be from 2 pm to 5 pm.
The forecasted high will be comparable to the typical October maximum of 65.8°F. The lowest temperature tomorrow is more in line with November's average minimum of 37.6°F than the average low in October of 48.6°F.
Updated: Oct 18, 2026 @ 02:21:35 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
Tomorrow, in Grafton, sunshine will likely continue with scattered clouds at most.
Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 37.4°F.
The maximum temperature tomorrow will be in line with the average highest temperature in October. Tomorrow, the lowest temperature will be noticeably lower than the average low of 48.6°F.
The maximum temperature tomorrow will be in line with the average highest temperature in October. Tomorrow, the lowest temperature will be noticeably lower than the average low of 48.6°F.
On Sunday, in Grafton, sunrise will be at 7:14 am and sunset at 6:19 pm (CDT).
Tomorrow, the daylight will last for 11h and 5min.
