Carbondale
Illinois, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Carbondale, IL

January, like December, in Carbondale, Illinois, is a wintry winter month, with average temperature varying between 39.6°F (4.2°C) and 26.2°F (-3.2°C). The coldest month is January, with an average high-temperature of 39.6°F (4.2°C) and an average low-temperature of 26.2°F (-3.2°C). Weather in January »

The last month of the winter, February, is a chilly month in Carbondale, Illinois, with average temperature fluctuating between 43.7°F (6.5°C) and 30°F (-1.1°C). In February, the average high-temperature is essentially the same as in January - a frosty 43.7°F (6.5°C). Weather in February »

March, the first month of the spring, in Carbondale, is a fresh month, with temperature in the range of an average low of 38.8°F (3.8°C) and an average high of 55.2°F (12.9°C). In Carbondale, Illinois, the average high-temperature increases, from a frosty 43.7°F (6.5°C) in February, to a cool 55.2°F (12.9°C). Weather in March »

April is a comfortable spring month in Carbondale, Illinois, with temperature in the range of an average low of 48.6°F (9.2°C) and an average high of 66.2°F (19°C). In April, the average high-temperature rises, from a cool 55.2°F (12.9°C) in March, to a comfortable 66.2°F (19°C). Weather in April »

The last month of the spring, May, is a moderately hot month in Carbondale, Illinois, with average temperature fluctuating between 75.7°F (24.3°C) and 58.3°F (14.6°C). In May, the average high-temperature increases, from an enjoyable 66.2°F (19°C) in April, to a moderately hot 75.7°F (24.3°C). Weather in May »

June, the first month of the summer, in Carbondale, is also a moderately hot month, with average temperature ranging between max 84.7°F (29.3°C) and min 66.4°F (19.1°C). In Carbondale, the average high-temperature increases, from 75.7°F (24.3°C) in May, to a still warm 84.7°F (29.3°C). Weather in June »

July is a tropical summer month in Carbondale, Illinois, with average temperature fluctuating between 68.7°F (20.4°C) and 87.4°F (30.8°C). July is the warmest month, with an average high-temperature of 87.4°F (30.8°C) and an average low-temperature of 68.7°F (20.4°C). The average heat index in July is appraised at a very hot 102.6°F (39.2°C). Weather in July »

The last month of the summer, August, is another warm month in Carbondale, Illinois, with average temperature varying between 85.8°F (29.9°C) and 66.4°F (19.1°C). In August, the average high-temperature is essentially the same as in July - a warm 85.8°F (29.9°C). Weather in August »

The first month of the autumn, September, is still a warm month in Carbondale, Illinois, with average temperature varying between 60.3°F (15.7°C) and 80.4°F (26.9°C). In Carbondale, the average high-temperature marginally drops, from 85.8°F (29.9°C) in August, to a still moderately hot 80.4°F (26.9°C). Weather in September »

October, the same as September, is another enjoyable autumn month in Carbondale, Illinois, with average temperature ranging between min 49.3°F (9.6°C) and max 67.5°F (19.7°C). In Carbondale, the average high-temperature drops, from a moderately hot 80.4°F (26.9°C) in September, to a comfortable 67.5°F (19.7°C). Weather in October »

The last month of the autumn, November, is another cool month in Carbondale, Illinois, with average temperature fluctuating between 54°F (12.2°C) and 38.7°F (3.7°C). In November, the average high-temperature decreases, from an enjoyable 67.5°F (19.7°C) in October, to a fresh 54°F (12.2°C). Weather in November »

December, the first month of the winter, in Carbondale, is still a chilly month, with temperature in the range of an average low of 31.8°F (-0.1°C) and an average high of 43.7°F (6.5°C). In December, the average high-temperature decreases, from a fresh 54°F (12.2°C) in November, to a chilly 43.7°F (6.5°C). Weather in December »

What is the coldest month in Carbondale?

The coldest month in Carbondale is January, with an average high-temperature of 39.6°F (4.2°C) and an average low-temperature of 26.2°F (-3.2°C).

How much does it rain in Carbondale?

Throughout the year, there are 158.6 rainfall days, and 34.69" (881mm) of precipitation is accumulated.

When does it snow in Carbondale?

Months with snowfall in Carbondale are January through April, October through December.

How many days does it snow in Carbondale?

In Carbondale, during the entire year, snow falls for 15.9 days, and aggregates up to 5.71" (145mm) of snow.

What is the month with the least sunshine in Carbondale?

With an average of 4.7h of sunshine, January has the least sunshine of the year.

What are the months with the lowest UV index in Carbondale?

Months with the lowest UV index in Carbondale, Illinois, are January, February, November and December, with an average maximum UV index of 2.

When does it snow the most in Carbondale?

February is the month with the most snowfall in Carbondale. Snow falls for 4.8 days and accumulates 1.73" (44mm) of snow.

What is the rainiest month in Carbondale?

The month with the most rainfall in Carbondale, Illinois, is April when the rain falls for 15.5 days and typically aggregates up to 4.49" (114mm) of precipitation.

What is the most humid month in Carbondale?

The most humid month in Carbondale, Illinois, is May, with an average relative humidity of 79%.

When it does not snow in Carbondale?

In Carbondale snow does not fall in May through September.

What are the months with the highest UV index in Carbondale?

May through August, with an average maximum UV index of 6, are months with the highest UV index.

When are the longest days in Carbondale?

June has the longest days of the year, with an average of 14.7h of daylight.

What month has the most sunshine in Carbondale?

June has the most sunshine of the year in Carbondale, Illinois, with an average of 10.6h of sunshine.

What is the warmest month in Carbondale?

July is the warmest month in Carbondale, with an average high-temperature of 87.4°F (30.8°C) and an average low-temperature of 68.7°F (20.4°C).

What is the driest month in Carbondale?

The month with the least rainfall is September when the rain falls for 12.7 days and typically collects 1.85" (47mm) of precipitation.

What is the least humid month in Carbondale?

With an average relative humidity of 71%, October is the least humid month.

What is the month with the shortest days in Carbondale?

December has the shortest days of the year in Carbondale, with an average of 9.6h of daylight.
Average temperature - Carbondale, IL
Average rainfall - Carbondale, IL

The wettest month (with the highest rainfall) is April (4.49").
The driest month (with the lowest rainfall) is September (1.85").

Average rainfall days - Carbondale, IL

The month with the highest number of rainy days is May (17.1 days).
The month with the lowest number of rainy days is January (9.4 days).

Average snowfall - Carbondale, IL
Average snowfall days - Carbondale, IL

Months with the highest number of snowfall days are January and February (4.8 days).
Months with the lowest number of snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine - Carbondale, IL

The month with the longest days is June (Average daylight: 14.7h).
The month with shortest days is December (Average daylight: 9.6h).

The month with most sunshine is June (Average sunshine: 10.6h).
The month with least sunshine is January (Average sunshine: 4.7h).

Average UV index - Carbondale, IL