Climate and monthly weather forecast
Crestwood, IL

Weather in January

January, like December, is another subzero cold winter month in Crestwood, Illinois, with temperature in the range of an average high of 29.5°F (-1.4°C) and an average low of 18.9°F (-7.3°C). January is the coldest month, with an average high-temperature of 29.5°F (-1.4°C) and an average low-temperature of 18.9°F (-7.3°C). Weather in January »

Weather in February

The last month of the winter, February, is a wintry month in Crestwood, Illinois, with an average temperature varying between 21.6°F (-5.8°C) and 32.5°F (0.3°C). In February, the average high-temperature is almost the same as in January - a cold 32.5°F (0.3°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Crestwood, Illinois, with temperature in the range of an average low of 32.4°F (0.2°C) and an average high of 44.2°F (6.8°C). In Crestwood, the average high-temperature in March rises from a wintry 32.5°F (0.3°C) in February to a chilly 44.2°F (6.8°C). Weather in March »

Weather in April

April is a fresh spring month in Crestwood, Illinois, with an average temperature ranging between max 55.2°F (12.9°C) and min 41.2°F (5.1°C). In April, the average high-temperature rises from a chilly 44.2°F (6.8°C) in March to a cool 55.2°F (12.9°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Crestwood, Illinois, with an average temperature varying between 66.4°F (19.1°C) and 51.8°F (11°C). In May, the average high-temperature rises from a fresh 55.2°F (12.9°C) in April to an enjoyable 66.4°F (19.1°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Crestwood, Illinois, with temperature in the range of an average high of 76.3°F (24.6°C) and an average low of 61.5°F (16.4°C). In June, the average high-temperature increases from an enjoyable 66.4°F (19.1°C) in May to a warm 76.3°F (24.6°C). Weather in June »

Weather in July

July, like June, in Crestwood, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 81°F (27.2°C) and 66.6°F (19.2°C). The warmest month is July, with an average high-temperature of 81°F (27.2°C) and an average low-temperature of 66.6°F (19.2°C). In July, the average heat index is computed to be a hot 86°F (30°C). Weather in July »

Weather in August

August, the last month of the summer in Crestwood, is another warm month, with an average temperature varying between 65.8°F (18.8°C) and 79.9°F (26.6°C). In August, the average high-temperature is almost the same as in July - a still warm 79.9°F (26.6°C). Weather in August »

Weather in September

September, the first month of the autumn in Crestwood, is also a moderately hot month, with an average temperature fluctuating between 73.6°F (23.1°C) and 59.2°F (15.1°C). In September, the average high-temperature slightly decreases from 79.9°F (26.6°C) in August to a still warm 73.6°F (23.1°C). Weather in September »

Weather in October

October, the same as September, in Crestwood, Illinois, is a moderate autumn month, with an average temperature fluctuating between 60.6°F (15.9°C) and 47.1°F (8.4°C). In Crestwood, the average high-temperature in October drops from a moderately hot 73.6°F (23.1°C) in September to a mild 60.6°F (15.9°C). Weather in October »

Weather in November

November, the last month of the autumn in Crestwood, is also a frosty month, with an average temperature ranging between min 35.1°F (1.7°C) and max 46.2°F (7.9°C). In November, the average high-temperature significantly decreases from a mild 60.6°F (15.9°C) in October to a frosty 46.2°F (7.9°C). Weather in November »

Weather in December

December, the first month of the winter in Crestwood, is also a wintry month, with an average temperature varying between 26.4°F (-3.1°C) and 35.2°F (1.8°C). In Crestwood, the average high-temperature in December decreases from a frosty 46.2°F (7.9°C) in November to a cold 35.2°F (1.8°C). Weather in December »
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FAQ

What is the coldest month in Crestwood?

With an average high-temperature of 29.5°F (-1.4°C) and an average low-temperature of 18.9°F (-7.3°C), January is the coldest month in Crestwood.

What is the most humid month in Crestwood?

The months with the highest humidity in Crestwood are January and February, with an average relative humidity of 82%.

How many days does it rain in Crestwood?

Throughout the year, in Crestwood, Illinois, there are 147.7 rainfall days, and 23.62" (600mm) of precipitation is accumulated.

When does it snow in Crestwood?

January through April, October through December are months with snowfall in Crestwood, Illinois.

How many days does it snow in Crestwood?

In Crestwood, Illinois, during the entire year, snow falls for 42.4 days and aggregates up to 11.61" (295mm) of snow.

What is the month with the least sunshine in Crestwood?

The month with the least sunshine is January, with an average of 3.7h of sunshine.

When does it snow the most in Crestwood?

The month with the most snowfall is February, when snow falls for 9.5 days and typically aggregates up to 3.07" (78mm) of snow.

When is Daylight Saving Time (DST) in Crestwood?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Crestwood, Illinois, 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 wettest month in Crestwood?

May is the month with the most rainfall in Crestwood. Rain falls for 17.7 days and accumulates 3.07" (78mm) of precipitation.

When it does not snow in Crestwood?

May through September are months without snowfall in Crestwood.

When are the longest days in Crestwood?

The month with the longest days in Crestwood is June, with an average of 15h and 9min of daylight.

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

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

What is the warmest month in Crestwood?

July is the warmest month, with an average high-temperature of 81°F (27.2°C) and an average low-temperature of 66.6°F (19.2°C).

What month has the most sunshine in Crestwood?

August has the most sunshine of the year, with an average of 10.5h of sunshine.

What is the least humid month in Crestwood?

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

What is the driest month in Crestwood?

December is the month with the least rainfall in Crestwood. Rain falls for 7.4 days and accumulates 1.02" (26mm) of precipitation.

What is the month with the shortest days in Crestwood?

December has the shortest days of the year in Crestwood, Illinois, with an average of 9h and 13min of daylight.

When is the lowest UV index in Crestwood?

December is the month with the lowest UV index, with an average maximum UV index of 1.

Average temperature
Crestwood, IL

Average temperature - Crestwood, IL

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (29.5°F).

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).

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Average pressure
Crestwood, IL

Average pressure - Crestwood, 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
Crestwood, IL

Average wind speed - Crestwood, IL

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest month (with the lowest average wind speed) is August (6.5mph).

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Average humidity
Crestwood, IL

Average humidity - Crestwood, IL

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).

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Average rainfall
Crestwood, IL

Average rainfall - Crestwood, IL

The wettest month (with the highest rainfall) is May (3.07").
The driest month (with the least rainfall) is December (1.02").

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Average rainfall days
Crestwood, IL

Average rainfall days - Crestwood, IL

The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is February (4.9 days).

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Average snowfall
Crestwood, IL

Average snowfall - Crestwood, IL

The month with the highest snowfall is February (3.07").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days
Crestwood, IL

Average snowfall days - Crestwood, IL

The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight / Average sunshine
Crestwood, IL

Average daylight / Average sunshine - Crestwood, IL

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days
Crestwood, IL

Average sunshine days - Crestwood, IL

The month with the most sunshine days is November (17.5 days).
The month with the least sunshine days is July (9.8 days).

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Average visibility
Crestwood, IL

Average visibility - Crestwood, 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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