Weather forecast for todayVandalia, IL

Weather forecast for today

Current condition 2:09 am CDT

  • 39°F
  • Feels like:
    39°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 0mphNNW 340°
  • Humidity: 98%
  • Dewpoint: 37°F
  • Pressure: 30.4"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
In Vandalia, at the moment, the weather remains clear and calm throughout the day.
The temperature is a cold 39.2°F. The current temperature is almost at the minimum-anticipated 41°F for today.

Monday Oct 19, 2026

  • 72°F
  • 41°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 2mphSE 143°
  • Humidity: 50%
  • UV index: 4
  • Sunrise: 7:10 am CDT
  • Sunset: 6:12 pm CDT
  • ▼
Today, in Vandalia, sunshine will likely continue with scattered clouds at most.
A notable temperature range, reaching a high of an agreeable 71.6°F and a low of an icy 41°F, is predicted.
A forecast high of 71.6°F brings conditions more familiar to September's average than October's.
Sunrise will be at 7:10 am and sunset at 6:12 pm; the daylight will last for 11h and 2min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 70°C.
Coldest period: 3 am - 6 am 39°C.

Chance of precipitation

Highest chance: 2%.

Hourly weather forecast

  • 4 am
  • 37°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 0mphS 180°
  • Humidity: 98%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 39°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 0mphS 180°
  • Humidity: 89%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:10 am
  • 8 am
  • 41°F
  • Feels like:
    41°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 1mphSE 125°
  • Humidity: 88%
  • Pressure: 30.42"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 55°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphSE 142°
  • Humidity: 57%
  • Pressure: 30.42"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 64°F
  • Feels like:
    64°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphSSE 157°
  • Humidity: 40%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 2 pm
  • 70°F
  • Feels like:
    70°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphSSE 151°
  • Humidity: 32%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 70°F
  • Feels like:
    70°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphSSE 151°
  • Humidity: 30%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 64°F
  • Feels like:
    64°F
Mostly Sunny
Mostly Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphSE 125°
  • Humidity: 42%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:12 pm
  • 8 pm
  • 54°F
  • Feels like:
    54°F
Mostly Clear
Mostly Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 0mphE 81°
  • Humidity: 67%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 50°F
  • Feels like:
    50°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 1mphE 82°
  • Humidity: 77%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, primarily dry and sunny and occasionally cloud-filled weather is anticipated.
The temperature will be between a maximum of 69.8°F and a minimum of 37.4°F. The warmest part of the day will be from 2 pm to 4 pm.
The highest temperature is more resembling September's average maximum of 77.9°F than October's usual of 65.1°F. The expected low will be more comparable to what’s common in November than the current October average of 48.6°F.
Updated: Oct 19, 2026 @ 07:09:33 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (2:09 am CDT) it is 39.2°F in Vandalia.

On Monday, clear and sunny conditions are expected.

Today, the maximum temperature will be 71.6°F, while the minimum temperature will be 41°F.
The maximum temperature will be a couple of degrees higher than the average highest temperature of 65.1°F in October. The lowest temperature will be also a few degrees lower than the average low of 48.6°F.

On Monday, in Vandalia, sunrise will be at 7:10 am and sunset at 6:12 pm (CDT).

Today, the daylight will last for 11h and 2min.