Climate and monthly weather forecast
Oak Park, IL

Weather in January

January, the same as December, in Oak Park, Illinois, is another subzero cold winter month, with temperature in the range of an average low of 19.4°F (-7°C) and an average high of 28.9°F (-1.7°C). January is the coldest month, with an average high-temperature of 28.9°F (-1.7°C) and an average low-temperature of 19.4°F (-7°C). Weather in January »

Weather in February

The last month of the winter, February, is a cold month in Oak Park, Illinois, with an average temperature fluctuating between 21.9°F (-5.6°C) and 32.4°F (0.2°C). In February, the average high-temperature is practically the same as in January - a cold 32.4°F (0.2°C). Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Oak Park, Illinois, with an average temperature ranging between max 43.2°F (6.2°C) and min 32.2°F (0.1°C). In Oak Park, the average high-temperature in March increases from a wintry 32.4°F (0.2°C) in February to a chilly 43.2°F (6.2°C). Weather in March »

Weather in April

April in Oak Park, Illinois, is a cool spring month, with an average temperature fluctuating between 40.5°F (4.7°C) and 53.2°F (11.8°C). In April, the average high-temperature rises from a chilly 43.2°F (6.2°C) in March to a fresh 53.2°F (11.8°C). Weather in April »

Weather in May

May, the last month of the spring in Oak Park, is a comfortable month, with temperature in the range of an average high of 64.4°F (18°C) and an average low of 51.4°F (10.8°C). In May, the average high-temperature increases from a fresh 53.2°F (11.8°C) in April to a comfortable 64.4°F (18°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Oak Park, Illinois, with an average temperature varying between 61.2°F (16.2°C) and 73.9°F (23.3°C). In Oak Park, the average high-temperature in June increases from a comfortable 64.4°F (18°C) in May to a warm 73.9°F (23.3°C). Weather in June »

Weather in July

July, like June, in Oak Park, Illinois, is another warm summer month, with an average temperature varying between 79.7°F (26.5°C) and 67.5°F (19.7°C). The warmest month is July, with an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 67.5°F (19.7°C). Weather in July »

Weather in August

August, the last month of the summer in Oak Park, is also a moderately hot month, with an average temperature fluctuating between 66.7°F (19.3°C) and 79.3°F (26.3°C). In August, the average high-temperature is relatively the same as in July - a still warm 79.3°F (26.3°C). Weather in August »

Weather in September

September, the first month of the autumn in Oak Park, is still a pleasant month, with an average temperature varying between 60.4°F (15.8°C) and 72.1°F (22.3°C). In September, the average high-temperature marginally drops from a warm 79.3°F (26.3°C) in August to an agreeable 72.1°F (22.3°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Oak Park, Illinois, with temperature in the range of an average low of 47.8°F (8.8°C) and an average high of 59.9°F (15.5°C). In Oak Park, the average high-temperature in October drops from an agreeable 72.1°F (22.3°C) in September to a moderate 59.9°F (15.5°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Oak Park, Illinois, with temperature in the range of an average low of 35.4°F (1.9°C) and an average high of 45.9°F (7.7°C). In November, the average high-temperature decreases from a mild 59.9°F (15.5°C) in October to a frosty 45.9°F (7.7°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Oak Park, Illinois, with temperature in the range of an average high of 35.1°F (1.7°C) and an average low of 26.6°F (-3°C). In Oak Park, the average high-temperature in December drops from a chilly 45.9°F (7.7°C) in November to a cold 35.1°F (1.7°C). Weather in December »
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FAQ

What is the coldest month in Oak Park?

With an average high-temperature of 28.9°F (-1.7°C) and an average low-temperature of 19.4°F (-7°C), January is the coldest month in Oak Park, Illinois.

What is the most humid month in Oak Park?

The most humid month in Oak Park is January, with an average relative humidity of 82%.

How many days does it rain in Oak Park?

Throughout the year, in Oak Park, Illinois, there are 157.8 rainfall days, and 33.7" (856mm) of precipitation is accumulated.

When does it snow in Oak Park?

Months with snowfall in Oak Park, Illinois, are January through May, October through December.

How many days does it snow in Oak Park?

In Oak Park, Illinois, during the entire year, snow falls for 40.3 days and aggregates up to 16.81" (427mm) of snow.

What is the month with the least sunshine in Oak Park?

With an average of 3.7h of sunshine, January has the least sunshine of the year in Oak Park, Illinois.

What is the month with the lowest UV index in Oak Park?

The months with the lowest UV index in Oak Park are January and December, with an average maximum UV index of 1.

When does it snow the most in Oak Park?

February is the month with the most snowfall in Oak Park. Snow falls for 10.2 days and accumulates 4.69" (119mm) of snow.

When is Daylight Saving Time (DST) in Oak Park?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 5. 2023, at 2:00 am, and the time zone reverts from CDT to CST.

What is the rainiest month in Oak Park?

May is the month with the most rainfall in Oak Park. Rain falls for 18.8 days and accumulates 4.49" (114mm) of precipitation.

When it does not snow in Oak Park?

In Oak Park, Illinois, snow does not fall in June through September.

When are the longest days in Oak Park?

The month with the longest days in Oak Park is June, with an average of 15h and 11min of daylight.

When is the highest UV index in Oak Park?

The months with the highest UV index in Oak Park are June through August, with an average maximum UV index of 6.

What is the warmest month in Oak Park?

The warmest month in Oak Park is July, with an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 67.5°F (19.7°C).

What month has the most sunshine in Oak Park?

August has the most sunshine of the year, with an average of 10.6h of sunshine.

What is the least humid month in Oak Park?

With an average relative humidity of 72%, October is the least humid month in Oak Park.

What is the driest month in Oak Park?

December is the month with the least rainfall. Rain falls for 8.2 days and accumulates 1.57" (40mm) of precipitation.

What is the month with the shortest days in Oak Park?

The month with the shortest days in Oak Park is December, with an average of 9h and 11min of daylight.

Average temperature
Oak Park, IL

Average temperature - Oak Park, IL

The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (28.9°F).

The month with the highest average low temperature is July (67.5°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).

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Average pressure
Oak Park, IL

Average pressure - Oak Park, IL

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed
Oak Park, IL

Average wind speed - Oak Park, IL

The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

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Average rainfall
Oak Park, IL

Average rainfall - Oak Park, IL

The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is December (1.57").

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Average rainfall days
Oak Park, IL

Average rainfall days - Oak Park, IL

The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is February (5.1 days).

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Average snowfall
Oak Park, IL

Average snowfall - Oak Park, IL

The month with the highest snowfall is February (4.69").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Oak Park, IL

Average snowfall days - Oak Park, IL

The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Oak Park, IL

Average daylight / Average sunshine - Oak Park, IL

The month with the longest days is June (Average daylight: 15h and 11min).
The month with the shortest days is December (Average daylight: 9h and 11min).

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days
Oak Park, IL

Average sunshine days - Oak Park, IL

The month with the most sunshine days is December (16.7 days).
The month with the least sunshine days is July (9.9 days).

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Average UV index
Oak Park, IL

Average UV index - Oak Park, IL

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average visibility
Oak Park, IL

Average visibility - Oak Park, IL

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

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