Live Weather & Forecast
Weather in Cahokia
Illinois, United States · Real-time conditions & 3-day outlook
19°C
Feels like 19°C
66°F / Feels 66°F
Clear
Cahokia, Illinois
🌙 Nighttime
Updated: 2026-04-12 03:00
Humidity
70%
Wind
15.5 km/h SSE
Wind Gust
32.5 km/h
Pressure
1020 mb
Visibility
16 km
UV Index
0
(Low)
Precipitation
0 mm
Cloud Cover
0%
Dew Point
13.1°C
Wind Degree
163°
Air Quality Index
US EPA: Good
UK DEFRA: Low (1)
CO
191.9 μg/m³
NO₂
6.7 μg/m³
O₃
75 μg/m³
SO₂
3 μg/m³
PM 2.5
5.6 μg/m³
PM 10
5.9 μg/m³
Today's Hourly Forecast
24-hour breakdown for Cahokia, Illinois
12 AM
18°
Clear
1 AM
18°
Clear
2 AM
18°
Clear
3 AM
19°
Clear
4 AM
17°
Clear
5 AM
16°
Clear
6 AM
16°
Clear
7 AM
17°
Sunny
8 AM
19°
Sunny
9 AM
21°
Sunny
10 AM
24°
Sunny
11 AM
27°
Sunny
12 PM
28°
Sunny
1 PM
29°
Sunny
2 PM
29°
Sunny
3 PM
29°
Sunny
4 PM
27°
Sunny
5 PM
26°
Overcast
6 PM
24°
Cloudy
7 PM
24°
Overcast
8 PM
23°
Overcast
9 PM
22°
Cloudy
10 PM
22°
Overcast
11 PM
19°
Overcast
3-Day Forecast
Daily overview for Cahokia, Illinois
Today
Sunny
31°
/
15°
🌧️ 0% chance of rain
💧 Avg. humidity: 59%
💨 Max wind: 31.3 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.7
🌅 Sunrise: 06:28 AM
🌇 Sunset: 07:35 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Thundery outbreaks in nearby
30°
/
17°
🌧️ 0% chance of rain
💧 Avg. humidity: 74%
💨 Max wind: 30.6 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 2
🌅 Sunrise: 06:27 AM
🌇 Sunset: 07:36 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Thundery outbreaks in nearby
27°
/
19°
🌧️ 0% chance of rain
💧 Avg. humidity: 76%
💨 Max wind: 30.6 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 2
🌅 Sunrise: 06:26 AM
🌇 Sunset: 07:37 PM
🌙 Waning Crescent
🌑 Moon: 15% lit
Best Time to Visit Cahokia
Plan your trip to Cahokia, 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
People also ask — answers optimized for search engines and voice queries.
What is the current weather in Cahokia?
Current conditions in Cahokia: Clear, temperature 19°C, humidity 70%.
What is the best time to visit Cahokia?
The best time to visit Cahokia is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Cahokia?
Cahokia is located at approximately 38.6° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Cahokia?
The wettest period in Cahokia is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Cahokia?
For visits to Cahokia during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Cahokia in?
Cahokia is located in United States, in the state of Illinois.
What are the public holidays in Cahokia in 2026?
View the 2026 public holidays for Cahokia on our Holidays page.
What are the GPS coordinates used for the weather forecast in Cahokia?
The weather forecast for Cahokia uses coordinates 38.5662, -90.1794.