Weather forecast for todayMarion, IL

Weather forecast for today

Current condition 12:42 am CDT

  • 39°F
  • Feels like:
    39°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 1mphW 260°
  • Humidity: 98%
  • Dewpoint: 37°F
  • Pressure: 30.48"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Currently, an endless stretch of blue sky remains completely clear.
The temperature is an icy 39.2°F. The present temperature is at its lowest of the day.

Sunday Oct 18, 2026

  • 66°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 6mphSE 129°
  • Humidity: 54%
  • UV index: 5
  • Sunrise: 7:07 am CDT
  • Sunset: 6:14 pm CDT
  • ▼
Today, on Sunday, October 18, sun-filled conditions are expected to persist.
Day and night temperatures will contrast sharply, from a maximum of an enjoyable 66.2°F to a minimum of a wintry 39.2°F.
The predicted maximum temperature will closely reflect October's average high of 67.3°F.
Sunrise will be at 7:07 am and sunset at 6:14 pm; the daylight will last for 11h and 7min.

Hourly overview

Hourly temperatures

Warmest hour: 4 pm 66°C.
Coldest period: 4 am - 7 am 37°C.

Chance of precipitation

Highest chance: 2%.

Hourly weather forecast

  • 2 am
  • 39°F
  • Feels like:
    39°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 1mphE 101°
  • Humidity: 95%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 37°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 2mphESE 104°
  • Humidity: 90%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 37°F
  • Feels like:
    37°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 2mphESE 115°
  • Humidity: 91%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:07 am
  • 8 am
  • 39°F
  • Feels like:
    39°F
Sunny
Sunny
  • Precip. probability: 5%
  • Precipitation: 0"
  • Wind: 2mphESE 116°
  • Humidity: 92%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 54°F
  • Feels like:
    52°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSE 125°
  • Humidity: 60%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 61°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSE 136°
  • Humidity: 43%
  • Pressure: 30.47"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 2 pm
  • 64°F
  • Feels like:
    64°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSE 137°
  • Humidity: 37%
  • Pressure: 30.42"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 66°F
  • Feels like:
    66°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphSE 134°
  • Humidity: 35%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 61°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphESE 111°
  • Humidity: 44%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:14 pm
  • 8 pm
  • 52°F
  • Feels like:
    52°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 2mphESE 107°
  • Humidity: 65%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 48°F
  • Feels like:
    48°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 1mphESE 121°
  • Humidity: 79%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, mostly cloudless and sunny weather is anticipated.
The temperature will vary between the lowest temperature of 37.4°F and the highest temperature of 66.2°F. The warmest part of the day will be at 3 pm and 4 pm.
Today, the maximum will be alike with October's typical high. The lowest temperature today is more consistent with November's average minimum of 38.5°F than the average low in October of 49.3°F.
Updated: Oct 18, 2026 @ 05:42:00 UTC
Published by: Weather Atlas | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

At 12:42 am CDT, the temperature is 39.2°F.

On Sunday, sunshine is expected with little to no cloud cover.

Today, the highest temperature will be 66.2°F, while the lowest temperature will be 39.2°F.
The maximum temperature today will be in line with the average highest temperature in October. The lowest temperature will be uncommonly lower than the average low of 49.3°F.

On Sunday, in Marion, sunrise will be at 7:07 am and sunset at 6:14 pm (CDT).

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