Live Weather & Forecast

Weather in Charleston

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

Flag of United States
Sunny
23°C
Feels like 25°C
74°F / Feels 77°F
Sunny
Charleston, Illinois
🌞 Daytime
Updated: 2026-04-12 11:45
💧
Humidity
56%
💨
Wind
31.7 km/h SSW
🌬️
Wind Gust
39.5 km/h
🌡️
Pressure
1019 mb
👁️
Visibility
16 km
☀️
UV Index
3.2 (Moderate)
🌧️
Precipitation
0 mm
☁️
Cloud Cover
0%
💦
Dew Point
16.7°C
🌐
Wind Degree
205°

Air Quality Index

US EPA: Good UK DEFRA: Low (1)
CO
145.9 μg/m³
NO₂
1.8 μg/m³
O₃
115 μg/m³
SO₂
1.6 μg/m³
PM 2.5
5.9 μg/m³
PM 10
6.6 μg/m³

Weather Alerts 2

Met · Severe · Immediate
Flood Warning issued April 11 at 9:40PM EDT until April 13 at 9:42PM EDT by NWS Indianapolis IN

...The Flood Warning is extended for the following river in Indiana...Illinois... Wabash River at Hutsonville Legacy Power Plant Site, and Riverton. .The last of lowland flooding continues along a short portion of the Wabash River in western Indiana, affecting the Hutsonville and Riverton areas. Flooding is expected to end there on Monday. Flooding ended at Terre Haute and Montezuma earlier tod...

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov/ind. The next statement should be issued Sunday afternoon by around 300 PM EDT /200 PM CDT/.

Effective: 2026-04-11T21:40:00-04:00  ·  Expires: 2026-04-12T15:00:00-04:00
Met · Severe · Immediate
Flood Warning issued April 11 at 9:40PM EDT until April 14 at 12:30AM EDT by NWS Indianapolis IN

...The Flood Warning is extended for the following river in Indiana...Illinois... Wabash River at Hutsonville Legacy Power Plant Site, and Riverton. .The last of lowland flooding continues along a short portion of the Wabash River in western Indiana, affecting the Hutsonville and Riverton areas. Flooding is expected to end there on Monday. Flooding ended at Terre Haute and Montezuma earlier tod...

Motorists should not attempt to drive around barricades or drive cars through flooded areas. Caution is urged when walking near riverbanks. Additional information is available at www.weather.gov/ind. The next statement should be issued Sunday afternoon by around 300 PM EDT /200 PM CDT/.

Effective: 2026-04-11T21:40:00-04:00  ·  Expires: 2026-04-12T15:00:00-04:00

Today's Hourly Forecast

24-hour breakdown for Charleston, Illinois

12 AM
Clear
14°
Clear
💧 77% 💨 15.8 km/h
1 AM
Clear
14°
Clear
💧 80% 💨 16.9 km/h
2 AM
Clear
14°
Clear
💧 86% 💨 17.6 km/h
3 AM
Clear
14°
Clear
💧 87% 💨 18 km/h
4 AM
Clear
14°
Clear
💧 86% 💨 19.1 km/h
5 AM
Clear
14°
Clear
💧 88% 💨 17.3 km/h
6 AM
Clear
14°
Clear
💧 90% 💨 17.6 km/h
7 AM
Sunny
15°
Sunny
💧 89% 💨 19.4 km/h
8 AM
Sunny
17°
Sunny
💧 84% 💨 19.8 km/h
9 AM
Sunny
19°
Sunny
💧 76% 💨 22 km/h
10 AM
Sunny
21°
Sunny
💧 72% 💨 28.1 km/h
11 AM
Sunny
23°
Sunny
💧 56% 💨 31.7 km/h
12 PM
Sunny
25°
Sunny
💧 55% 💨 33.8 km/h
1 PM
Sunny
26°
Sunny
💧 44% 💨 34.9 km/h
2 PM
Sunny
27°
Sunny
💧 40% 💨 33.8 km/h
3 PM
Sunny
27°
Sunny
💧 38% 💨 32.4 km/h
4 PM
Sunny
26°
Sunny
💧 40% 💨 33.5 km/h
5 PM
Cloudy
25°
Cloudy
💧 53% 💨 31 km/h
6 PM
Cloudy
23°
Cloudy
💧 58% 💨 31 km/h
7 PM
Cloudy
22°
Cloudy
💧 65% 💨 26.6 km/h
8 PM
Partly Cloudy
21°
Partly Cloudy
💧 61% 💨 29.2 km/h
9 PM
Partly Cloudy
21°
Partly Cloudy
💧 65% 💨 28.4 km/h
10 PM
Overcast
20°
Overcast
💧 65% 💨 32.8 km/h
11 PM
Overcast
20°
Overcast
💧 66% 💨 34.9 km/h

3-Day Forecast

Daily overview for Charleston, Illinois

Today
Sunny
Sunny
28° / 14°
🌧️ 0% chance of rain
💧 Avg. humidity: 68%
💨 Max wind: 34.9 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.7
🌅 Sunrise: 06:20 AM
🌇 Sunset: 07:28 PM
🌙 Waning Crescent
🌑 Moon: 33% lit
Mon, Apr 13
Patchy rain nearby
Patchy rain nearby
24° / 18°
🌧️ 76% chance of rain
💧 Avg. humidity: 77%
💨 Max wind: 34.6 km/h
🌧️ Total precip: 3.01 mm
☀️ UV Index: 1.5
🌅 Sunrise: 06:19 AM
🌇 Sunset: 07:29 PM
🌙 Waning Crescent
🌑 Moon: 23% lit
Tue, Apr 14
Thundery outbreaks in nearby
Thundery outbreaks in nearby
23° / 19°
🌧️ 0% chance of rain
💧 Avg. humidity: 83%
💨 Max wind: 36 km/h
🌧️ Total precip: 0 mm
☀️ UV Index: 1.7
🌅 Sunrise: 06:17 AM
🌇 Sunset: 07:30 PM
🌙 Waning Crescent
🌑 Moon: 15% lit

Best Time to Visit Charleston

Plan your trip to Charleston, 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 Charleston 🗓 View Holidays 2026

Frequently Asked Questions

What is the current weather in Charleston?
Current conditions in Charleston: Sunny, temperature 23°C, humidity 56%.
What is the best time to visit Charleston?
The best time to visit Charleston is typically June – September. Warm, dry summers — ideal for outdoor activities.
What is the climate like in Charleston?
Charleston is located at approximately 39.5° latitude. It has a temperate climate with warm summers and cold winters.
Does it rain a lot in Charleston?
The wettest period in Charleston is typically during November – March. Cooler temperatures; some regions may experience rain or snow.
What should I pack for a trip to Charleston?
For visits to Charleston during June – September: light clothing and sun protection. For November – March: layers and a waterproof jacket are recommended.
What country is Charleston in?
Charleston is located in United States, in the state of Illinois.
What are the public holidays in Charleston in 2026?
View the 2026 public holidays for Charleston on our Holidays page.
What are the GPS coordinates used for the weather forecast in Charleston?
The weather forecast for Charleston uses coordinates 39.4961, -88.1762.