Live Weather & Forecast

Weather in Illinois City

Illinois, United States · Real-time conditions & 3-day outlook

Flag of United States
Overcast
16°C
Feels like 16°C
61°F / Feels 61°F
Overcast
Illinois City, Illinois
🌙 Nighttime
Updated: 2026-04-12 22:30
💧
Humidity
100%
💨
Wind
24.1 km/h SW
🌬️
Wind Gust
37.5 km/h
🌡️
Pressure
1009 mb
👁️
Visibility
16 km
☀️
UV Index
0 (Low)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
100%
💦
Dew Point
14.9°C
🌐
Wind Degree
225°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
155.9 μg/m³
NO₂
2.6 μg/m³
O₃
87 μg/m³
SO₂
1.3 μg/m³
PM 2.5
4 μg/m³
PM 10
4.1 μg/m³

Weather Alerts 5

Met · Severe · Immediate
Flood Warning issued April 11 at 9:13PM CDT until April 13 at 6:00PM CDT by NWS Quad Cities IA IL

...The Flood Warning continues for the following rivers in Iowa... Cedar River near Conesville affecting Muscatine and Louisa Counties. Iowa River at Wapello affecting Louisa County. Iowa River at Marengo affecting Iowa and Benton Counties. ...The Flood Warning is extended for the following rivers in Iowa... Iowa River at Oakville affecting Louisa County. * WHAT...Minor flooding is occurring...

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. The next statement will be issued by Sunday evening at 915 PM CDT.

Met · Moderate · Expected
Special Weather Statement issued April 12 at 1:25PM CDT by NWS Quad Cities IA IL

Strong south-southwesterly winds will continue this afternoon through the early evening hours, with occasional gusts as high as 45 mph. There are also some developing showers and a few isolated thunderstorms this afternoon that could help generate stronger wind gusts up to 50 mph. If traveling on east-to-west oriented roads, be prepared for gusty crosswinds, especially in high profile vehicles. S...

Met · Severe · Immediate
Flood Warning issued April 12 at 10:26AM CDT until April 13 at 6:00PM CDT by NWS Quad Cities IA IL

...The Flood Warning continues for the following rivers in Iowa... Wapsipinicon River near De Witt 4S affecting Clinton and Scott Counties. Cedar River near Conesville affecting Louisa and Muscatine Counties. Iowa River at Oakville affecting Louisa County. Iowa River at Wapello affecting Louisa County. Iowa River at Marengo affecting Benton and Iowa Counties. * WHAT...Minor flooding is occur...

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. The next statement will be issued by Monday morning at 700 AM CDT.

Met · Severe · Immediate
Flood Warning issued April 11 at 9:04PM CDT until April 16 at 3:00AM CDT by NWS Quad Cities IA IL

...The Flood Warning continues for the following rivers in Iowa... Wapsipinicon River near De Witt 4S affecting Clinton and Scott Counties. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Wapsipinicon River near De Witt 4S. * WHEN...Until early Thursday morning. * IMPACTS...At 12.0 feet, Overbank flooding occurs. Water affects residences along the river be...

Caution is urged when walking near riverbanks. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. The next statement will be issued by Sunday evening at 915 P...

Met · Severe · Immediate
Flood Warning issued April 12 at 10:26AM CDT until April 16 at 3:00AM CDT by NWS Quad Cities IA IL

...The Flood Warning continues for the following rivers in Iowa... Wapsipinicon River near De Witt 4S affecting Clinton and Scott Counties. Cedar River near Conesville affecting Louisa and Muscatine Counties. Iowa River at Oakville affecting Louisa County. Iowa River at Wapello affecting Louisa County. Iowa River at Marengo affecting Benton and Iowa Counties. * WHAT...Moderate flooding is oc...

Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Motorists should not attempt to drive around barricades or drive cars through flooded areas. The next statement will be issued by Monday morning at 700 AM CDT.

Today's Hourly Forecast

24-hour breakdown for Illinois City, Illinois

12 AM
Clear
13°
Clear
💧 75% 💨 22.7 km/h
1 AM
Clear
14°
Clear
💧 81% 💨 20.9 km/h
2 AM
Clear
14°
Clear
💧 84% 💨 19.4 km/h
3 AM
Clear
14°
Clear
💧 84% 💨 22 km/h
4 AM
Clear
15°
Clear
💧 84% 💨 24.1 km/h
5 AM
Clear
15°
Clear
💧 83% 💨 25.6 km/h
6 AM
Clear
15°
Clear
💧 80% 💨 25.2 km/h
7 AM
Moderate rain at times
15°
Moderate rain at times
💧 81% 💨 26.6 km/h 🌧️ 100%
8 AM
Patchy rain nearby
16°
Patchy rain nearby
💧 82% 💨 26.3 km/h 🌧️ 100%
9 AM
Sunny
18°
Sunny
💧 81% 💨 28.8 km/h
10 AM
Sunny
20°
Sunny
💧 78% 💨 30.2 km/h
11 AM
Sunny
22°
Sunny
💧 73% 💨 34.2 km/h
12 PM
Partly Cloudy
24°
Partly Cloudy
💧 67% 💨 35.3 km/h
1 PM
Cloudy
25°
Cloudy
💧 50% 💨 32.8 km/h
2 PM
Partly Cloudy
25°
Partly Cloudy
💧 51% 💨 29.2 km/h
3 PM
Partly Cloudy
24°
Partly Cloudy
💧 54% 💨 27.4 km/h
4 PM
Patchy rain nearby
24°
Patchy rain nearby
💧 57% 💨 26.6 km/h 🌧️ 100%
5 PM
Patchy rain nearby
23°
Patchy rain nearby
💧 60% 💨 28.8 km/h 🌧️ 100%
6 PM
Patchy rain nearby
20°
Patchy rain nearby
💧 60% 💨 27 km/h 🌧️ 100%
7 PM
Light rain
18°
Light rain
💧 89% 💨 25.2 km/h 🌧️ 100%
8 PM
Moderate rain
17°
Moderate rain
💧 93% 💨 29.9 km/h 🌧️ 100%
9 PM
Patchy rain nearby
17°
Patchy rain nearby
💧 92% 💨 23 km/h 🌧️ 100%
10 PM
Overcast
16°
Overcast
💧 100% 💨 24.1 km/h
11 PM
Cloudy
17°
Cloudy
💧 94% 💨 23 km/h

3-Day Forecast

Daily overview for Illinois City, Illinois

Today
Moderate rain
Moderate rain
26° / 13°
🌧️ 85% chance of rain
💧 Avg. humidity: 76%
💨 Max wind: 35.3 km/h
🌧️ Total precip: 6.15 mm
☀️ UV Index: 0.9
🌅 Sunrise: 06:28 AM
🌇 Sunset: 07:41 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Thundery outbreaks in nearby
Thundery outbreaks in nearby
23° / 17°
🌧️ 0% chance of rain
💧 Avg. humidity: 91%
💨 Max wind: 29.5 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 0.9
🌅 Sunrise: 06:27 AM
🌇 Sunset: 07:42 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Patchy rain nearby
Patchy rain nearby
23° / 19°
🌧️ 80% chance of rain
💧 Avg. humidity: 94%
💨 Max wind: 33.8 km/h
🌧️ Total precip: 0.19 mm
☀️ UV Index: 1.2
🌅 Sunrise: 06:25 AM
🌇 Sunset: 07:43 PM
🌙 Waning Crescent
🌑 Moon: 15% lit

Best Time to Visit Illinois City

Plan your trip to Illinois City, 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.
← Back to Illinois City 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Illinois City?
Current conditions in Illinois City: Overcast, temperature 16°C, humidity 100%.
What is the best time to visit Illinois City?
The best time to visit Illinois City is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Illinois City?
Illinois City is located at approximately 41.4° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Illinois City?
The wettest period in Illinois City is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Illinois City?
For visits to Illinois City during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Illinois City in?
Illinois City is located in United States, in the state of Illinois.
What are the public holidays in Illinois City in 2026?
View the 2026 public holidays for Illinois City on our Holidays page.
What are the GPS coordinates used for the weather forecast in Illinois City?
The weather forecast for Illinois City uses coordinates 41.3975, -90.8996.