Weather forecast for todayVandalia, IL

Weather forecast for today

Current condition 12:45 pm CDT

  • 55°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precipitation: 0"
  • Wind: 4mphNNE 30°
  • Humidity: 48%
  • Dewpoint: 36°F
  • Pressure: 30.52"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
Currently, the sun is shining uninterrupted, making for an excellent day outdoors.
The temperature is a mild 55.4°F. The current temperature is almost at the maximum anticipated 59°F for today.

Saturday Oct 17, 2026

  • 59°F
  • 36°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 4mphNNE 31°
  • Humidity: 42%
  • UV index: 5
  • Sunrise: 7:08 am CDT
  • Sunset: 6:15 pm CDT
  • ▼
On Saturday, October 17, clear and sunny conditions are expected.
Temperatures are predicted to peak at a mild 59°F and drop to a minimum of a wintry 35.6°F.
Today, the expected high will be a few degrees lower than the average October maximum of 65.1°F.
Sunrise was at 7:08 am and sunset will be at 6:15 pm; the daylight will last for 11h and 7min.

Hourly overview

Hourly temperatures

Warmest period: 3 pm - 5 pm 59°C.
Coldest hour: 10 pm 45°C.

Chance of precipitation

Highest chance: 9 pm - 10 pm 2%.

Hourly weather forecast

  • 1 pm
  • 55°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNNE 20°
  • Humidity: 46%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 2 pm
  • 57°F
  • Feels like:
    57°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNNE 23°
  • Humidity: 42%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 3 pm
  • 59°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphNNE 25°
  • Humidity: 39%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 59°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 3mphNE 38°
  • Humidity: 37%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 5 pm
  • 59°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 2mphNE 36°
  • Humidity: 39%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 pm
  • 55°F
  • Feels like:
    55°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphNE 46°
  • Humidity: 47%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:15 pm
  • 7 pm
  • 52°F
  • Feels like:
    52°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphENE 68°
  • Humidity: 61%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 8 pm
  • 48°F
  • Feels like:
    48°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 1mphE 81°
  • Humidity: 68%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 9 pm
  • 46°F
  • Feels like:
    46°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 1mphE 94°
  • Humidity: 73%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 45°F
  • Feels like:
    45°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 1mphESE 104°
  • Humidity: 78%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 11 pm
  • 43°F
  • Feels like:
    43°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 2mphSE 126°
  • Humidity: 77%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, in Vandalia, sunshine is expected.
The temperature will be 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.
Today, the forecasted high will be relatively lower than October's typical peak temperature. The lowest temperature today is more similar to November's average minimum of 37.2°F than the average low in October of 48.6°F.
Updated: Oct 17, 2026 @ 17:45:54 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Currently (12:45 pm CDT) it is 55.4°F in Vandalia.

Today, sunny conditions are expected to continue.

Today, the highest temperature will be 59°F, while the lowest temperature will be 35.6°F.
The maximum temperature will be a few degrees lower than the average highest temperature of 65.1°F in October. The lowest temperature today will be notably lower than the average low of 48.6°F.

On Saturday, in Vandalia, sunrise was at 7:08 am and sunset will be at 6:15 pm (CDT).

In Vandalia, today, there will be 11h and 7min of daylight.