Weather forecast for todayFlat Rock, IL

Weather forecast for today

Current condition 1:30 am CDT

  • 37°F
  • Feels like:
    37°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 1mphWNW 300°
  • Humidity: 95%
  • Dewpoint: 36°F
  • Pressure: 30.5"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
At the moment, no clouds in sight, just a completely clear atmosphere.
The temperature is an icy 37.4°F. The current temperature is almost at the minimum-anticipated 35.6°F for today.

Sunday Oct 18, 2026

  • 66°F
  • 36°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 8mphSSE 148°
  • Humidity: 53%
  • UV index: 5
  • Sunrise: 7:03 am CDT
  • Sunset: 6:08 pm CDT
  • ▼
Today, in Flat Rock, conditions remain stable and sunny, with little cloud presence.
Temperatures are set to span a considerable range, with a high of an enjoyable 66.2°F and a low of a wintry 35.6°F.
The highest temperature for today is anticipated to reflect October's average of 65.5°F.
Sunrise will be at 7:03 am and sunset at 6:08 pm; the daylight will last for 11h and 5min.

Hourly overview

Hourly temperatures

Warmest period: 2 pm - 5 pm 63°C.
Coldest period: 2 am - 5 am 37°C.

Chance of precipitation

Highest chance: 2%.

Hourly weather forecast

  • 2 am
  • 37°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 2mphESE 108°
  • Humidity: 94%
  • Pressure: 30.47"Hg
  • Visibility: 9mi
  • UV index: 0
  • ▼
  • 4 am
  • 37°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 2mphESE 119°
  • Humidity: 95%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 37°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 3mphSE 125°
  • Humidity: 95%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:03 am
  • 8 am
  • 41°F
  • Feels like:
    41°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 2mphSE 137°
  • Humidity: 89%
  • Pressure: 30.53"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 52°F
  • Feels like:
    50°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSSE 155°
  • Humidity: 61%
  • Pressure: 30.53"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 59°F
  • Feels like:
    57°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphSSE 160°
  • Humidity: 44%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 63°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphSSE 158°
  • Humidity: 36%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 64°F
  • Feels like:
    64°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSE 145°
  • Humidity: 34%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 57°F
  • Feels like:
    57°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSE 132°
  • Humidity: 46%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:08 pm
  • 8 pm
  • 50°F
  • Feels like:
    50°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphESE 119°
  • Humidity: 69%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 46°F
  • Feels like:
    46°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 2mphSE 126°
  • Humidity: 80%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, sunny conditions are likely to prevail.
The temperature will vary between the highest temperature of 64.4°F and the lowest temperature of 37.4°F. The warmest part of the day will be at 3 pm and 4 pm.
Today, expect conditions close to October's usual high temperature. The minimum temperature will be more consistent with November's average low of 37.4°F than October's typical 48.6°F.
Updated: Oct 18, 2026 @ 06:30:08 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (1:30 am CDT) it is 37.4°F in Flat Rock.

On Sunday, in Flat Rock, expect consistent sunshine and open skies.

Today, the maximum temperature will be 66.2°F, while the minimum temperature will be 35.6°F.
The highest temperature will be in line with the average maximum of 65.5°F in October. The lowest temperature today will be noticeably lower than the average low of 48.6°F.

On Sunday, in Flat Rock, sunrise will be at 7:03 am and sunset at 6:08 pm (CDT).

Today, the daylight will last for 11h and 5min.