Weather forecast for tomorrowGrant Park, IL
Weather forecast for tomorrow
Sunday Oct 18, 2026
- 64°F
- 36°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 12mphSSW 199°
- Humidity: 46%
- UV index: 4
- Sunrise: 7:05 am CDT
- Sunset: 6:05 pm CDT
- details ▼
On Sunday, in Grant Park, bright and sunny weather is expected.
Temperature fluctuations will be substantial, ranging from a peak of a breezy 64.4°F to a low of an icy 35.6°F.
The highest temperature tomorrow will align with the usual October peak of 61.7°F.
Sunrise will be at 7:05 am and sunset at 6:05 pm; tomorrow's daylight will last for 10h and 59min.
Temperature fluctuations will be substantial, ranging from a peak of a breezy 64.4°F to a low of an icy 35.6°F.
The highest temperature tomorrow will align with the usual October peak of 61.7°F.
Sunrise will be at 7:05 am and sunset at 6:05 pm; tomorrow's daylight will last for 10h and 59min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 64°C.
Coldest period: 3 am - 6 am 37°C.
Coldest period: 3 am - 6 am 37°C.
Chance of precipitation
Highest chance: 12 am - 6 am 3%.
Hourly weather forecast
- 12 am
- 41°F
- Feels like:37°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 4mphSSW 197°
- Humidity: 77%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 39°F
- Feels like:36°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 4mphS 187°
- Humidity: 80%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 37°F
- Feels like:34°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 5mphSSW 192°
- Humidity: 79%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 37°F
- Feels like:32°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 5mphSSW 193°
- Humidity: 80%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:05 am
- 8 am
- 39°F
- Feels like:36°F
Sunny
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 6mphSSW 195°
- Humidity: 75%
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 52°F
- Feels like:48°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 11mphSSW 200°
- Humidity: 50%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 59°F
- Feels like:55°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 12mphSSW 204°
- Humidity: 38%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 2 pm
- 63°F
- Feels like:61°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 12mphSSW 204°
- Humidity: 32%
- Pressure: 30.42"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 63°F
- Feels like:63°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 11mphSSW 195°
- Humidity: 31%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 57°F
- Feels like:55°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 7mphS 181°
- Humidity: 41%
- Pressure: 30.36"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:05 pm
- 8 pm
- 52°F
- Feels like:50°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 6mphS 180°
- Humidity: 55%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 46°F
- Feels like:45°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 5mphS 182°
- Humidity: 68%
- Pressure: 30.39"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, sunshine is expected.
The temperature will vary between a minimum of 37.4°F and a maximum of 64.4°F. The warmest part of the day will be around 3 pm.
The high temperature is expected to be in line with October's usual value of 61.7°F. Tomorrow, the overnight low is more similar to November's usual minimum of 34.5°F than October's 46.6°F.
The temperature will vary between a minimum of 37.4°F and a maximum of 64.4°F. The warmest part of the day will be around 3 pm.
The high temperature is expected to be in line with October's usual value of 61.7°F. Tomorrow, the overnight low is more similar to November's usual minimum of 34.5°F than October's 46.6°F.
Updated: Oct 17, 2026 @ 20:39:40 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, sunny skies and pleasant visibility are expected.
Tomorrow, the highest temperature will be 64.4°F, while the lowest temperature will be 35.6°F.
The highest temperature will be in line with the average maximum of 61.7°F in October. Tomorrow, the lowest temperature will be uncommonly lower than the average low of 46.6°F.
The highest temperature will be in line with the average maximum of 61.7°F in October. Tomorrow, the lowest temperature will be uncommonly lower than the average low of 46.6°F.
On Sunday, in Grant Park, sunrise will be at 7:05 am and sunset at 6:05 pm (CDT).
In Grant Park, Illinois, the length of the day tomorrow will be 10h and 59min.
