Live Weather & Forecast
Weather in Marion
Illinois, United States · Real-time conditions & 3-day outlook
19°C
Feels like 19°C
67°F / Feels 67°F
Clear
Marion, Illinois
🌙 Nighttime
Updated: 2026-04-12 06:45
Humidity
83%
Wind
10.8 km/h S
Wind Gust
18.8 km/h
Pressure
1020 mb
Visibility
11 km
UV Index
0
(Low)
Precipitation
0 mm
Cloud Cover
0%
Dew Point
15°C
Wind Degree
172°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
131.9 μg/m³
NO₂
2.5 μg/m³
O₃
94 μg/m³
SO₂
2 μg/m³
PM 2.5
6.6 μg/m³
PM 10
7.7 μg/m³
Today's Hourly Forecast
24-hour breakdown for Marion, Illinois
12 AM
20°
Clear
1 AM
19°
Clear
2 AM
19°
Clear
3 AM
18°
Clear
4 AM
18°
Clear
5 AM
17°
Clear
6 AM
19°
Clear
7 AM
17°
Sunny
8 AM
19°
Sunny
9 AM
20°
Partly Cloudy
10 AM
22°
Overcast
11 AM
23°
Partly Cloudy
12 PM
23°
Partly Cloudy
1 PM
23°
Patchy rain nearby
2 PM
24°
Patchy rain nearby
3 PM
24°
Moderate rain at times
4 PM
25°
Patchy rain nearby
5 PM
25°
Overcast
6 PM
25°
Overcast
7 PM
24°
Thundery outbreaks in nearby
8 PM
24°
Overcast
9 PM
23°
Overcast
10 PM
23°
Cloudy
11 PM
22°
Overcast
3-Day Forecast
Daily overview for Marion, Illinois
Today
Patchy rain nearby
25°
/
16°
🌧️ 78% chance of rain
💧 Avg. humidity: 79%
💨 Max wind: 20.5 km/h
🌧️ Total precip: 4.98 mm
☀️ UV Index: 1.3
🌅 Sunrise: 06:51 AM
🌇 Sunset: 07:46 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Overcast
31°
/
20°
🌧️ 0% chance of rain
💧 Avg. humidity: 77%
💨 Max wind: 18.7 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.7
🌅 Sunrise: 06:50 AM
🌇 Sunset: 07:46 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Overcast
25°
/
20°
🌧️ 0% chance of rain
💧 Avg. humidity: 74%
💨 Max wind: 17.6 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 2.2
🌅 Sunrise: 06:49 AM
🌇 Sunset: 07:47 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Best Time to Visit Marion
Plan your trip to Marion, United States around the most favorable weather conditions.
Peak Season
June – September
Warm, dry summers — ideal for outdoor activities.
Shoulder Season
April – May, October
Fewer crowds, moderate prices, mild weather.
Off Season
November – March
Cooler temperatures; some regions may experience rain or snow.
Frequently Asked Questions
What is the current weather in Marion?
Current conditions in Marion: Clear, temperature 19°C, humidity 83%.
What is the best time to visit Marion?
The best time to visit Marion is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Marion?
Marion is located at approximately 32.8° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Marion?
The wettest period in Marion is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Marion?
For visits to Marion during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Marion in?
Marion is located in United States, in the state of Illinois.
What are the public holidays in Marion in 2026?
View the 2026 public holidays for Marion on our Holidays page.
What are the GPS coordinates used for the weather forecast in Marion?
The weather forecast for Marion uses coordinates 32.7932, -94.3445.