Climate and monthly weather forecast
Champaign, IL

An old building that works as an auditorium within the University of Illinois in Champaign
An old building that works as an auditorium within the University of Illinois in Champaign

Weather in January

January, like December, is a freezing cold winter month in Champaign, Illinois, with temperature in the range of an average high of 31.8°F (-0.1°C) and an average low of 20.5°F (-6.4°C). The coldest month is January, with an average high-temperature of 31.8°F (-0.1°C) and an average low-temperature of 20.5°F (-6.4°C). Weather in January »

Weather in February

February, the last month of the winter, in Champaign, is a cold month, with average temperature varying between 37°F (2.8°C) and 24.3°F (-4.3°C). In Champaign, the average high-temperature in February is almost the same as in January - a cold 37°F (2.8°C). Weather in February »

Weather in March

March, the first month of the spring, in Champaign, is a frosty month, with average temperature ranging between min 34.7°F (1.5°C) and max 49.5°F (9.7°C). In March, the average high-temperature rises, from a wintry 37°F (2.8°C) in February, to a frosty 49.5°F (9.7°C). Weather in March »

Weather in April

April is an enjoyable spring month in Champaign, Illinois, with temperature in the range of an average high of 61.3°F (16.3°C) and an average low of 45.7°F (7.6°C). In Champaign, the average high-temperature rises, from a chilly 49.5°F (9.7°C) in March, to a comfortable 61.3°F (16.3°C). Weather in April »

Weather in May

May, the last month of the spring, in Champaign, is an agreeable month, with average temperature ranging between min 56.1°F (13.4°C) and max 72.1°F (22.3°C). In May, the average high-temperature increases, from an enjoyable 61.3°F (16.3°C) in April, to an agreeable 72.1°F (22.3°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Champaign, Illinois, with temperature in the range of an average high of 80.1°F (26.7°C) and an average low of 63.9°F (17.7°C). In Champaign, Illinois, the average high-temperature in June marginally rises, from an agreeable 72.1°F (22.3°C) in May, to a moderately hot 80.1°F (26.7°C). Weather in June »

Weather in July

July, like June, in Champaign, Illinois, is another warm summer month, with average temperature ranging between min 65.1°F (18.4°C) and max 81.1°F (27.3°C). With an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 65.1°F (18.4°C), July is the warmest month. The average heat index is computed to be a tropical 87.8°F (31°C). Weather in July »

Weather in August

August, the last month of the summer, in Champaign, is also a moderately hot month, with average temperature fluctuating between 80.6°F (27°C) and 63.3°F (17.4°C). In August, the average high-temperature is essentially the same as in July - a still warm 80.6°F (27°C). Weather in August »

Weather in September

September, the first month of the autumn, in Champaign, is also a moderately hot month, with average temperature ranging between max 76.1°F (24.5°C) and min 58.3°F (14.6°C). In September, the average high-temperature is essentially the same as in August - a still moderately hot 76.1°F (24.5°C). Weather in September »

Weather in October

October, like September, in Champaign, Illinois, is another enjoyable autumn month, with average temperature ranging between max 63.5°F (17.5°C) and min 47.8°F (8.8°C). In October, the average high-temperature drops, from a moderately hot 76.1°F (24.5°C) in September, to an enjoyable 63.5°F (17.5°C). Weather in October »

Weather in November

November, the last month of the autumn, in Champaign, is another chilly month, with average temperature varying between 36°F (2.2°C) and 49.1°F (9.5°C). In November, the average high-temperature declines considerably, from a comfortable 63.5°F (17.5°C) in October, to a chilly 49.1°F (9.5°C). Weather in November »

Weather in December

December, the first month of the winter, in Champaign, is also a wintry month, with average temperature ranging between max 37.6°F (3.1°C) and min 27.7°F (-2.4°C). In December, the average high-temperature decreases, from a chilly 49.1°F (9.5°C) in November, to a wintry 37.6°F (3.1°C). Weather in December »
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FAQ

What is the coldest month in Champaign?

With an average high-temperature of 31.8°F (-0.1°C) and an average low-temperature of 20.5°F (-6.4°C), January is the coldest month in Champaign.

How much does it rain in Champaign?

Throughout the year, there are 129.9 rainfall days, and 18.15" (461mm) of precipitation is accumulated.

When does it snow in Champaign?

January through April, November and December are months with snowfall.

When does it snow the most in Champaign?

January is the month with the most snowfall in Champaign, Illinois. Snow falls for 8.7 days and accumulates 1.85" (47mm) of snow.

How much does it snow in Champaign?

In Champaign, during the entire year, snow falls for 27.1 days, and aggregates up to 5.91" (150mm) of snow.

What is the month with the least sunshine in Champaign?

January has the least sunshine of the year in Champaign, Illinois, with an average of 4h of sunshine.

When is the lowest UV index in Champaign?

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

What is the rainiest month in Champaign?

April is the month with the most rainfall in Champaign, Illinois. Rain falls for 13.8 days and accumulates 2.24" (57mm) of precipitation.

When it does not snow in Champaign?

In Champaign snow does not fall in May through October.

When are the longest days in Champaign?

The month with the longest days is June, with an average of 15h of daylight.

What month has the most sunshine in Champaign?

June has the most sunshine of the year, with an average of 10.2h of sunshine.

What is the month with the highest UV index in Champaign?

Months with the highest UV index in Champaign are June through August, with an average maximum UV index of 6.

What is the warmest month in Champaign?

July is the warmest month in Champaign, Illinois, with an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 65.1°F (18.4°C).

What is the most humid month in Champaign?

With an average relative humidity of 85%, July is the most humid month in Champaign.

What is the driest month in Champaign?

September is the month with the least rainfall in Champaign. Rain falls for 10.4 days and accumulates 0.94" (24mm) of precipitation.

What is the least humid month in Champaign?

With an average relative humidity of 70%, October is the least humid month.

What is the month with the shortest days in Champaign?

The month with the shortest days is December, with an average of 9.4h of daylight.

Average temperature
Champaign, IL

Average temperature - Champaign, IL

The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.8°F).

The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (20.5°F).

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Average pressure
Champaign, IL

Average pressure - Champaign, IL

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.92").

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Average wind speed
Champaign, IL

Average wind speed - Champaign, IL

The windiest month (with the highest average wind speed) is January (10.8mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average rainfall
Champaign, IL

Average rainfall - Champaign, IL

The wettest month (with the highest rainfall) is April (2.24").
The driest month (with the least rainfall) is September (0.94").

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Average rainfall days
Champaign, IL

Average rainfall days - Champaign, IL

The month with the highest number of rainy days is May (15.3 days).
Months with the least rainy days are January and February (6 days).

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Average snowfall
Champaign, IL

Average snowfall - Champaign, IL

The month with the highest snowfall is January (1.85").
Months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
Champaign, IL

Average snowfall days - Champaign, IL

The month with the highest number of snowfall days is January (8.7 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight / Average sunshine
Champaign, IL

Average daylight / Average sunshine - Champaign, IL

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

The month with the most sunshine is June (Average sunshine: 10.2h).
The month with the least sunshine is January (Average sunshine: 4h).

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Average sunshine days
Champaign, IL

Average sunshine days - Champaign, IL

The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is July (11.8 days).

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Average UV index
Champaign, IL

Average UV index - Champaign, IL

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average visibility
Champaign, IL

Average visibility - Champaign, IL

Months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
Months with the lowest visibility are July and August (5mi).

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