Weather forecast for tomorrowCastleton, IL
Weather forecast for tomorrow
Wednesday Oct 21, 2026
- 73°F
- 46°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 3mphSW 214°
- Humidity: 52%
- UV index: 4
- Sunrise: 7:17 am CDT
- Sunset: 6:09 pm CDT
- details ▼
Tomorrow, sunny skies and pleasant visibility are also expected.
A substantial temperature fluctuation from a warm 73.4°F at its peak to a brisk 46.4°F at its lowest point is anticipated.
Meteorological data shows 73.4°F is more characteristic of September's climate profile than October's.
Sunrise will be at 7:17 am and sunset at 6:09 pm; tomorrow's daylight will last for 10h and 52min.
A substantial temperature fluctuation from a warm 73.4°F at its peak to a brisk 46.4°F at its lowest point is anticipated.
Meteorological data shows 73.4°F is more characteristic of September's climate profile than October's.
Sunrise will be at 7:17 am and sunset at 6:09 pm; tomorrow's daylight will last for 10h and 52min.
Hourly overview
Hourly temperatures
Warmest hour: 3 pm 73°C.
Coldest hour: 6 am 43°C.
Coldest hour: 6 am 43°C.
Chance of precipitation
Highest chance: 6 am 4%.
Hourly weather forecast
- 12 am
- 48°F
- Feels like:48°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 2mphESE 122°
- Humidity: 75%
- Pressure: 30.27"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 2 am
- 46°F
- Feels like:46°F
Clear
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 1mphSE 133°
- Humidity: 82%
- Pressure: 30.27"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 4 am
- 45°F
- Feels like:45°F
Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 1mphSSE 157°
- Humidity: 85%
- Pressure: 30.27"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 am
- 43°F
- Feels like:43°F
Clear
- Precip. probability: 4%
- Precipitation: 0"
- Wind: 1mphSSE 160°
- Humidity: 87%
- Pressure: 30.27"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunrise: 7:17 am
- 8 am
- 46°F
- Feels like:46°F
Sunny
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 1mphS 185°
- Humidity: 82%
- Pressure: 30.27"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 am
- 59°F
- Feels like:59°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphSSW 205°
- Humidity: 58%
- Pressure: 30.27"Hg
- Visibility: 10mi
- UV index: 2
- details ▼
- 12 pm
- 68°F
- Feels like:68°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphSW 215°
- Humidity: 43%
- Pressure: 30.24"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
- 2 pm
- 72°F
- Feels like:72°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphSW 234°
- Humidity: 37%
- Pressure: 30.21"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 72°F
- Feels like:72°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 2mphSW 232°
- Humidity: 36%
- Pressure: 30.18"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 6 pm
- 66°F
- Feels like:66°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 1mphSW 214°
- Humidity: 46%
- Pressure: 30.18"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:09 pm
- 8 pm
- 59°F
- Feels like:59°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 0mphSSW 207°
- Humidity: 64%
- Pressure: 30.21"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 55°F
- Feels like:55°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 0mphS 180°
- Humidity: 74%
- Pressure: 30.21"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Tomorrow, on Wednesday, bright and mostly sunny weather is expected.
The temperature will be between the lowest temperature of 42.8°F and the highest temperature of 73.4°F. The warmest part of the day is expected around 3 pm.
The highest temperature is more comparable to September's average maximum of 75.7°F than October's usual of 61.7°F. The expected low will be comparable to the average minimum in October, which is 45.9°F.
The temperature will be between the lowest temperature of 42.8°F and the highest temperature of 73.4°F. The warmest part of the day is expected around 3 pm.
The highest temperature is more comparable to September's average maximum of 75.7°F than October's usual of 61.7°F. The expected low will be comparable to the average minimum in October, which is 45.9°F.
Updated: Oct 20, 2026 @ 16:30:29 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
Tomorrow, in Castleton, expect bright skies and plenty of sunshine.
Tomorrow, the highest temperature will be 73.4°F, while the lowest temperature will be 46.4°F.
The maximum temperature will be significantly higher than the average highest temperature of 61.7°F in October. The lowest temperature will be in line with the average low of 45.9°F.
The maximum temperature will be significantly higher than the average highest temperature of 61.7°F in October. The lowest temperature will be in line with the average low of 45.9°F.
On Wednesday, in Castleton, sunrise will be at 7:17 am and sunset at 6:09 pm (CDT).
In Castleton, Illinois, the length of the day tomorrow will be 10h and 52min.
