Weather forecast for todayO'Fallon, IL
Weather forecast for today
Current condition 2:18 pm CDT
- 57°F
- Feels like:57°F
Sunny
- Precipitation: 0"
- Wind: 6mphNNW 340°
- Humidity: 46%
- Dewpoint: 37°F
- Pressure: 30.5"Hg
- Visibility: 10mi
- UV index: 4
- details ▼
Currently, in O'Fallon, a calm and sunny day is perfect for outdoor activities.
The temperature is a mild 57.2°F. The current temperature is almost at the maximum expected 59°F for today.
The temperature is a mild 57.2°F. The current temperature is almost at the maximum expected 59°F for today.
Saturday Oct 17, 2026
- 59°F
- 37°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphN 355°
- Humidity: 44%
- UV index: 4
- Sunrise: 7:11 am CDT
- Sunset: 6:18 pm CDT
- details ▼
Today, a sun-drenched sky is anticipated.
Temperatures are predicted to peak at a mild 59°F and drop to a minimum of an icy 37.4°F.
It will be colder, as the maximum temperature reflects November's norm of 53.1°F instead of October's.
Sunrise was at 7:11 am and sunset will be at 6:18 pm; the daylight will last for 11h and 8min.
Temperatures are predicted to peak at a mild 59°F and drop to a minimum of an icy 37.4°F.
It will be colder, as the maximum temperature reflects November's norm of 53.1°F instead of October's.
Sunrise was at 7:11 am and sunset will be at 6:18 pm; the daylight will last for 11h and 8min.
Hourly overview
Hourly temperatures
Warmest period: 3 pm - 5 pm 59°C.
Coldest period: 11 pm - 12 am 43°C.
Coldest period: 11 pm - 12 am 43°C.
Chance of precipitation
Highest chance: 11 pm - 12 am 2%.
Hourly weather forecast
- 3 pm
- 59°F
- Feels like:59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphN 353°
- Humidity: 43%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 3
- details ▼
- 4 pm
- 59°F
- Feels like:59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 5mphN 353°
- Humidity: 42%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 1
- details ▼
- 5 pm
- 59°F
- Feels like:59°F
Sunny
- Precip. probability: 0%
- Precipitation: 0"
- Wind: 4mphN 350°
- Humidity: 43%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 6 pm
- 55°F
- Feels like:55°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 2mphNNE 14°
- Humidity: 53%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
Sunset: 6:18 pm
- 7 pm
- 50°F
- Feels like:50°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 1mphNE 34°
- Humidity: 68%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 8 pm
- 48°F
- Feels like:48°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 1mphNE 53°
- Humidity: 72%
- Pressure: 30.45"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 9 pm
- 46°F
- Feels like:46°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 0mphENE 76°
- Humidity: 80%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 10 pm
- 45°F
- Feels like:45°F
Clear
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 0mphESE 122°
- Humidity: 83%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 11 pm
- 43°F
- Feels like:43°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 1mphSE 142°
- Humidity: 84%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
- 12 am
- 43°F
- Feels like:43°F
Clear
- Precip. probability: 2%
- Precipitation: 0"
- Wind: 1mphSE 132°
- Humidity: 87%
- Pressure: 30.47"Hg
- Visibility: 10mi
- UV index: 0
- details ▼
For the remainder of Saturday, bright skies and dry conditions are anticipated.
The temperature will vary between a minimum of 42.8°F and a maximum of 59°F. The warmest part of the day will be from 3 pm to 5 pm.
The maximum is expected to resemble November's average high of 53.1°F rather than October's. The minimum temperature today will be also more close to November's average low of 38.1°F than October's average of 48.7°F.
The temperature will vary between a minimum of 42.8°F and a maximum of 59°F. The warmest part of the day will be from 3 pm to 5 pm.
The maximum is expected to resemble November's average high of 53.1°F rather than October's. The minimum temperature today will be also more close to November's average low of 38.1°F than October's average of 48.7°F.
Updated: Oct 17, 2026 @ 19:18:18 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
Currently (2:18 pm CDT) it is 57.2°F in O'Fallon.
On Saturday, a sun-drenched sky is anticipated.
Today, the highest temperature will be 59°F, while the lowest temperature will be 37.4°F.
Today, the highest temperature will be relatively lower than the average maximum temperature in October. Today, the lowest temperature will be uncommonly lower than the average low of 48.7°F.
Today, the highest temperature will be relatively lower than the average maximum temperature in October. Today, the lowest temperature will be uncommonly lower than the average low of 48.7°F.
On Saturday, in O'Fallon, sunrise was at 7:11 am and sunset will be at 6:18 pm (CDT).
In O'Fallon, the length of the day today will be 11h and 8min.
O'Fallon, Illinois, USA
- en: O'Fallon, Illinois, USA
- es: O'Fallon, Illinois, EE.UU.
- hr: O'Falon, Ilinois, SAD
- mk: O'Falon, Ilinois, SAD
- sr: O'Falon, Ilinois, SAD
- zh: O'Fallon, 伊利诺伊, 美国
- Latitude: 38.592323°
- Longitude: -89.910991°
- Elevation: 554 ft
- Current time: 2:47pm CDT
- Sunrise: 7:11 am CDT
- Sunset: 6:18 pm CDT
- Timezone: America/Chicago
Nearby O'Fallon, Illinois, USA
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