Carbondale (IL) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Carbondale.
Climate overview of Carbondale
Temperatures in Carbondale, Illinois, United States of America, vary greatly throughout the year. July is the hottest month at 31°C (88°F), while January is the coldest at 6°C (43°F).
The city has a wet climate, receiving around 1285 mm (51 in) of rain/snowfall per year. Despite the high annual total, it has very warm summers and cold winters. April is the wettest month.
Carbondale Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Carbondale - and find the best time to visit.
Monthly Temperature in Carbondale
The climate in Carbondale is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a very warm 31°C (88°F) in July to a chilly 6°C (43°F) in January.
Nighttime temperatures range from 20°C (68°F) in July to -5°C (23°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Carbondale
Carbondale has a notably wet climate with abundant precipitation, recording 1285 mm (51 in) of rain/snowfall per year. The amount of precipitation varies moderately throughout the year. The wettest month, April, sees around 147 mm (5.8 in) of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, January, still receives a respectable 70 mm (2.8 in) of snow/rainfall. For more details, please visit our Carbondale Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Carbondale
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: September and October
- Warmest weather: June, July and August
- Seasonal pattern: Very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -5°C (23°F).
Frequently asked questions about the climate in Carbondale
What is the best time to visit Carbondale?
September and October typically offer the most optimal weather in Carbondale. In contrast, January, February and December tend to have less optimal conditions. Carbondale has very warm summers and cold winters.
What temperatures can I expect in Carbondale?
Daytime highs range from 6°C (43°F) in January to 31°C (88°F) in July. Nighttime lows range from -5°C (23°F) to 20°C (68°F). Temperatures vary considerably through the year.
How much rain does Carbondale get?
Annual rainfall is around 1285 mm (51 in). April is the wettest month with 147 mm (5.8 in), while January is the driest with 70 mm (2.8 in).
Carbondale 3-Day Forecast
Carbondale (IL) 3-Day Forecast
Carbondale on the map
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