Live Weather & Forecast

Weather in Romeoville

Q: What is the current weather in Romeoville?

Current conditions in Romeoville: Sunny, temperature 26°C, humidity 48%.

Q: What is the best time to visit Romeoville?

The best time to visit Romeoville is typically June – September. Warm, dry summers — ideal for outdoor activities.

Q: What are the GPS coordinates used for the weather forecast in Romeoville?

The weather forecast for Romeoville uses coordinates 41.6475, -88.0895.

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

26^°C

Feels like 27°C

79°F / Feels 81°F

Sunny

Romeoville, Illinois

🌞 Daytime

Updated: 2026-04-12 12:30

💧

Humidity

48%

💨

Wind

28.4 km/h SSW

🌬️

Wind Gust

35.1 km/h

🌡️

Pressure

1014 mb

👁️

Visibility

16 km

☀️

UV Index

5.8 (Moderate)

🌧️

Precipitation

0 mm

☁️

Cloud Cover

💦

Dew Point

18.1°C

🌐

Wind Degree

210°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)

160.9 μg/m³

NO₂

6.4 μg/m³

O₃

108 μg/m³

SO₂

2.9 μg/m³

PM 2.5

8.1 μg/m³

PM 10

8.7 μg/m³

Weather Alerts 2

Met · Severe · Immediate

Flood Warning issued April 11 at 9:24PM CDT until April 14 at 7:00PM CDT by NWS Chicago IL

...The Flood Warning continues for the following rivers in Illinois...Indiana... Fox River at Algonquin Lock & Dam tailwater affecting Lake IL, McHenry and Kane Counties. Kankakee River at Dunns Bridge affecting Jasper and Porter Counties. Kankakee River at Shelby affecting Newton and Lake IN Counties. ...The Flood Warning is extended for the following rivers in Illinois... Des Plaines River...

A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property. These forecasts are based on observed precipitation as well as forecast precipitation...

Effective: 2026-04-11T21:24:00-05:00 · Expires: 2026-04-12T15:30:00-05:00

Met · Severe · Immediate

Flood Warning issued April 11 at 9:24PM CDT until April 14 at 1:00AM CDT by NWS Chicago IL

Effective: 2026-04-11T21:24:00-05:00 · Expires: 2026-04-12T15:30:00-05:00

Today's Hourly Forecast

24-hour breakdown for Romeoville, Illinois

12 AM

10°

Clear

💧 70% 💨 16.6 km/h

1 AM

10°

Clear

💧 68% 💨 14.8 km/h

2 AM

10°

Clear

💧 69% 💨 15.5 km/h

3 AM

10°

Clear

💧 74% 💨 16.6 km/h

4 AM

11°

Clear

💧 79% 💨 17.3 km/h

5 AM

12°

Clear

💧 83% 💨 18.4 km/h

6 AM

12°

Clear

💧 86% 💨 20.2 km/h

7 AM

13°

Sunny

💧 87% 💨 21.6 km/h

8 AM

15°

Sunny

💧 84% 💨 22.7 km/h

9 AM

17°

Sunny

💧 80% 💨 23.4 km/h

10 AM

21°

Sunny

💧 75% 💨 26.3 km/h

11 AM

24°

Sunny

💧 66% 💨 27.7 km/h

12 PM

26°

Sunny

💧 48% 💨 28.4 km/h

1 PM

27°

Sunny

💧 54% 💨 29.5 km/h

2 PM

28°

Sunny

💧 48% 💨 29.2 km/h

3 PM

29°

Sunny

💧 45% 💨 28.8 km/h

4 PM

26°

Sunny

💧 43% 💨 24.8 km/h

5 PM

24°

Overcast

💧 63% 💨 20.2 km/h

6 PM

22°

Overcast

💧 70% 💨 15.8 km/h

7 PM

21°

Overcast

💧 84% 💨 19.4 km/h

8 PM

21°

Overcast

💧 69% 💨 26.6 km/h

9 PM

20°

Overcast

💧 70% 💨 25.2 km/h

10 PM

18°

Overcast

💧 81% 💨 27.7 km/h

11 PM

17°

Overcast

💧 97% 💨 28.4 km/h

3-Day Forecast

Daily overview for Romeoville, Illinois

Today

Sunny

29° / 10°

🌧️ 0% chance of rain

💧 Avg. humidity: 71%

💨 Max wind: 29.5 km/h

🌧️ Total precip: 0 mm

☀️ UV Index: 1.1

🌅 Sunrise: 06:17 AM

🌇 Sunset: 07:30 PM

🌙 Waning Crescent

🌑 Moon: 33% lit

Mon, Apr 13

Heavy rain

23° / 16°

🌧️ 87% chance of rain

💧 Avg. humidity: 91%

💨 Max wind: 26.3 km/h

🌧️ Total precip: 21.49 mm

☀️ UV Index: 1

🌅 Sunrise: 06:15 AM

🌇 Sunset: 07:31 PM

🌙 Waning Crescent

🌑 Moon: 23% lit

Tue, Apr 14

Thundery outbreaks in nearby

26° / 19°

🌧️ 0% chance of rain

💧 Avg. humidity: 87%

💨 Max wind: 35.6 km/h

🌧️ Total precip: 0 mm

☀️ UV Index: 0.9

🌅 Sunrise: 06:13 AM

🌇 Sunset: 07:32 PM

🌙 Waning Crescent

🌑 Moon: 15% lit

Best Time to Visit Romeoville

Plan your trip to Romeoville, 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 Romeoville 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Romeoville?

Current conditions in Romeoville: Sunny, temperature 26°C, humidity 48%.

What is the best time to visit Romeoville?

The best time to visit Romeoville is typically June – September. Warm, dry summers — ideal for outdoor activities.

What is the climate like in Romeoville?

Romeoville is located at approximately 41.6° latitude. It has a temperate climate with warm summers and cold winters.

Does it rain a lot in Romeoville?

The wettest period in Romeoville is typically during November – March. Cooler temperatures; some regions may experience rain or snow.

What should I pack for a trip to Romeoville?

For visits to Romeoville during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.

What country is Romeoville in?

Romeoville is located in United States, in the state of Illinois.

What are the public holidays in Romeoville in 2026?

View the 2026 public holidays for Romeoville on our Holidays page.

What are the GPS coordinates used for the weather forecast in Romeoville?

The weather forecast for Romeoville uses coordinates 41.6475, -88.0895.