Weather forecast for todayCastleton, IL

Weather forecast for today

Current condition 1:16 am CDT

  • 43°F
  • Feels like:
    39°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 4mphS 170°
  • Humidity: 73%
  • Dewpoint: 34°F
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Currently, in Castleton, skies are clear and bright, offering ideal outdoor conditions.
The temperature is a frosty 42.8°F, the apparent reading is estimated at an icy 39.2°F. The current temperature is far from the maximum of 64.4°F forecasted for today.

Sunday Oct 18, 2026

  • 64°F
  • 37°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 12mphSSW 193°
  • Humidity: 53%
  • UV index: 4
  • Sunrise: 7:14 am CDT
  • Sunset: 6:13 pm CDT
  • ▼
On Sunday, in Castleton, uninterrupted sunshine is anticipated.
A daytime temperature reaching up to a comfortable 64.4°F will sharply contrast with a nighttime low of an icy 37.4°F.
Forecasts show the temperature predicted to reach the usual October high of 61.7°F.
Sunrise will be at 7:14 am and sunset at 6:13 pm; the daylight will last for 11h and 0min.

Hourly overview

Hourly temperatures

Warmest hour: 2 pm 63°C.
Coldest hour: 5 am 39°C.

Chance of precipitation

Highest chance: 2%.

Hourly weather forecast

  • 2 am
  • 41°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 4mphS 189°
  • Humidity: 74%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 41°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 5mphS 190°
  • Humidity: 77%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 39°F
  • Feels like:
    34°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphS 187°
  • Humidity: 83%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:14 am
  • 8 am
  • 41°F
  • Feels like:
    36°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 7mphS 190°
  • Humidity: 81%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 50°F
  • Feels like:
    46°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 11mphSSW 193°
  • Humidity: 62%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 57°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphSSW 195°
  • Humidity: 46%
  • Pressure: 30.42"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 63°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 12mphSSW 197°
  • Humidity: 38%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 63°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 11mphSSW 191°
  • Humidity: 36%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 59°F
  • Feels like:
    57°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphS 180°
  • Humidity: 44%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:13 pm
  • 8 pm
  • 52°F
  • Feels like:
    50°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 5mphS 173°
  • Humidity: 60%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 48°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 5mphS 175°
  • Humidity: 68%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, mainly sunny weather and a cloudless sky are anticipated.
The temperature will be between a maximum of 62.6°F and a minimum of 39.2°F. The warmest part of the day will be from 2 pm to 4 pm.
Today, the temperature is forecasted to be consistent with the usual maximum for October. Today, the overnight low is more consistent with November's usual minimum of 33.8°F than October's 45.9°F.
Updated: Oct 18, 2026 @ 06:16:59 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (1:16 am CDT) it is 42.8°F in Castleton.

On Sunday, skies will stay clear and sunny.

Today, the highest temperature will be 64.4°F, while the lowest temperature will be 37.4°F.
The highest temperature today will be in line with the average maximum temperature in October. The lowest temperature today will be a few degrees lower than the average low temperature.

On Sunday, in Castleton, sunrise will be at 7:14 am and sunset at 6:13 pm (CDT).

In Castleton, the length of the day today will be 11h and 0min.