Weather forecast for todayMarion, IL

Weather forecast for today

Current condition 5:05 am CDT

  • 36°F
  • Feels like:
    36°F
Clear
Clear
  • Precipitation: 0"
  • Wind: 1mphWNW 290°
  • Humidity: 100%
  • Dewpoint: 36°F
  • Pressure: 30.49"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
In Marion, at the moment, a cloudless sky and calm conditions create ideal weather.
The temperature is a wintry 35.6°F. The current temperature is almost at the minimum-predicted 39.2°F for today.

Sunday Oct 18, 2026

  • 66°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphSE 128°
  • Humidity: 63%
  • UV index: 5
  • Sunrise: 7:07 am CDT
  • Sunset: 6:14 pm CDT
  • ▼
On Sunday, in Marion, bright and sunny weather is expected.
Temperature is forecasted to hit a high of an enjoyable 66.2°F during the day, dipping to a low of an icy 39.2°F at night.
October's typical peak of 67.3°F is anticipated to be mirrored in the day’s high.
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 hour: 6 am 36°C.

Chance of precipitation

Highest chance: 12 am 4%.

Hourly weather forecast

  • 6 am
  • 36°F
  • Feels like:
    36°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 2mphESE 120°
  • Humidity: 99%
  • 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: 2%
  • Precipitation: 0"
  • Wind: 1mphESE 120°
  • Humidity: 98%
  • 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: 5mphSE 127°
  • Humidity: 61%
  • Pressure: 30.5"Hg
  • Visibility: 10mi
  • UV index: 2
  • ▼
  • 12 pm
  • 59°F
  • Feels like:
    59°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 6mphSE 134°
  • Humidity: 44%
  • Pressure: 30.45"Hg
  • Visibility: 10mi
  • UV index: 5
  • ▼
  • 2 pm
  • 64°F
  • Feels like:
    64°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 4mphSE 138°
  • Humidity: 38%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 4
  • ▼
  • 4 pm
  • 66°F
  • Feels like:
    66°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 5mphSE 133°
  • Humidity: 36%
  • 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 114°
  • Humidity: 45%
  • 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 108°
  • Humidity: 68%
  • Pressure: 30.36"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 46°F
  • Feels like:
    46°F
Clear
Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 1mphSE 127°
  • Humidity: 82%
  • Pressure: 30.39"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Today, in Marion, primarily bright and sunny weather is anticipated.
The temperature will vary between a maximum of 66.2°F and a minimum of 35.6°F. The warmest part of the day will be at 3 pm and 4 pm.
The forecasted high will be close to the typical October maximum of 67.3°F. The lowest temperature is more close to November's average minimum of 38.5°F than the usual minimum of 49.3°F in October.
Updated: Oct 18, 2026 @ 10:05:35 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

The current temperature (5:05 am CDT) is 35.6°F.

On Sunday, clear skies and sunshine are anticipated.

Today, the maximum temperature will be 66.2°F, while the minimum temperature will be 39.2°F.
The maximum temperature will be in line with the average highest temperature of 67.3°F 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, the length of the day today will be 11h and 7min.