Climate and monthly weather forecast
Detroit, IL

Weather in January

January, like December, in Detroit, Illinois, is a wintry winter month, with an average temperature varying between 21.6°F (-5.8°C) and 33.8°F (1°C). The coldest month is January, with an average high-temperature of 33.8°F (1°C) and an average low-temperature of 21.6°F (-5.8°C). Weather in January »

Weather in February

February, the last month of the winter in Detroit, is also a wintry month, with an average temperature ranging between min 25°F (-3.9°C) and max 38.8°F (3.8°C). In February, the average high-temperature is practically the same as in January - a still wintry 38.8°F (3.8°C). Weather in February »

Weather in March

March, the first month of the spring in Detroit, is a cool month, with an average temperature fluctuating between 51.4°F (10.8°C) and 36°F (2.2°C). In March, the average high-temperature increases from a wintry 38.8°F (3.8°C) in February to a cool 51.4°F (10.8°C). Weather in March »

Weather in April

April in Detroit, Illinois, is an enjoyable spring month, with an average temperature varying between 46°F (7.8°C) and 63.5°F (17.5°C). In Detroit, the average high-temperature in April rises from a fresh 51.4°F (10.8°C) in March to an enjoyable 63.5°F (17.5°C). Weather in April »

Weather in May

May, the last month of the spring in Detroit, is a pleasant month, with an average temperature varying between 55.8°F (13.2°C) and 72.3°F (22.4°C). In May, the average high-temperature marginally rises from an enjoyable 63.5°F (17.5°C) in April to a pleasant 72.3°F (22.4°C). Weather in May »

Weather in June

June, the first month of the summer in Detroit, is a moderately hot month, with an average temperature varying between 82°F (27.8°C) and 64.6°F (18.1°C). In Detroit, Illinois, the average high-temperature in June increases from an agreeable 72.3°F (22.4°C) in May to a warm 82°F (27.8°C). Weather in June »

Weather in July

July, like June, in Detroit, Illinois, is a moderately hot summer month, with temperature in the range of an average low of 66.7°F (19.3°C) and an average high of 84.4°F (29.1°C). With an average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 66.7°F (19.3°C), July is the warmest month. The average heat index in July is evaluated at a very hot 95°F (35°C). Weather in July »

Weather in August

August, the last month of the summer in Detroit, is another warm month, with an average temperature ranging between max 83.5°F (28.6°C) and min 65.5°F (18.6°C). In August, the average high-temperature is essentially the same as in July - a still warm 83.5°F (28.6°C). Weather in August »

Weather in September

September, the first month of the autumn in Detroit, is also a moderately hot month, with an average temperature ranging between min 58.6°F (14.8°C) and max 78.3°F (25.7°C). In Detroit, the average high-temperature in September is relatively the same as in August - a still moderately hot 78.3°F (25.7°C). Weather in September »

Weather in October

October, like September, in Detroit, Illinois, is another comfortable autumn month, with temperature in the range of an average high of 64.2°F (17.9°C) and an average low of 47.3°F (8.5°C). In October, the average high-temperature decreases from a moderately hot 78.3°F (25.7°C) in September to an enjoyable 64.2°F (17.9°C). Weather in October »

Weather in November

November, the last month of the autumn in Detroit, is another cool month, with an average temperature ranging between min 36.3°F (2.4°C) and max 50.9°F (10.5°C). In November, the average high-temperature decreases from a comfortable 64.2°F (17.9°C) in October to a fresh 50.9°F (10.5°C). Weather in November »

Weather in December

December, the first month of the winter in Detroit, is also a wintry month, with an average temperature ranging between max 39°F (3.9°C) and min 27.9°F (-2.3°C). In Detroit, the average high-temperature in December drops from a fresh 50.9°F (10.5°C) in November to a wintry 39°F (3.9°C). Weather in December »
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FAQ

What is the coldest month in Detroit?

January is the coldest month, with an average high-temperature of 33.8°F (1°C) and an average low-temperature of 21.6°F (-5.8°C).

How much does it rain in Detroit?

Throughout the year, in Detroit, there are 128.8 rainfall days, and 18.35" (466mm) of precipitation is accumulated.

When does it snow in Detroit?

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

What is the snowiest month in Detroit?

January is the month with the most snowfall in Detroit, Illinois. Snow falls for 6.3 days and accumulates 2.05" (52mm) of snow.

How much does it snow in Detroit?

Throughout the year, there are 21.9 snowfall days, and 5.67" (144mm) of snow is accumulated.

What is the month with the least sunshine in Detroit?

The month with the least sunshine is January, with an average of 4.4h of sunshine.

When is the lowest UV index in Detroit?

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

What is the driest month in Detroit?

The month with the least rainfall is February, when the rain falls for 5.8 days and typically collects 0.75" (19mm) of precipitation.

When is Daylight Saving Time (DST) in Detroit?

On Sunday, March 12. 2023, at 2:00 am, Daylight Saving Time starts in Detroit, 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 rainiest month in Detroit?

The month with the most rainfall in Detroit, Illinois, is May, when the rain falls for 16.8 days and typically aggregates up to 2.44" (62mm) of precipitation.

When it does not snow in Detroit?

May through October are months without snowfall.

What are the most humid months in Detroit?

June and July, with an average relative humidity of 81%, are most humid months in Detroit.

When are the longest days in Detroit?

The month with the longest days is June, with an average of 14h and 56min of daylight.

What is the month with the most sunshine in Detroit?

The months with the most sunshine in Detroit are June and July, with an average of 10.3h of sunshine.

When is the highest UV index in Detroit?

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

What is the warmest month in Detroit?

The warmest month in Detroit, Illinois, is July, with an average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 66.7°F (19.3°C).

What is the least humid month in Detroit?

October is the least humid month in Detroit, with an average relative humidity of 71%.

What is the month with the shortest days in Detroit?

December has the shortest days of the year in Detroit, with an average of 9h and 25min of daylight.

Average pressure
Detroit, IL

Average pressure - Detroit, IL

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed
Detroit, IL

Average wind speed - Detroit, IL

The windiest months (with the highest average wind speed) are January, February and April (9.8mph).
The calmest month (with the lowest average wind speed) is July (6mph).

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Average humidity
Detroit, IL

Average humidity - Detroit, IL

The months with the highest relative humidity are June and July (81%).
The month with the lowest relative humidity is October (71%).

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Average rainfall
Detroit, IL

Average rainfall - Detroit, IL

The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is February (0.75").

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Average rainfall days
Detroit, IL

Average rainfall days - Detroit, IL

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.5 days).

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Average snowfall
Detroit, IL

Average snowfall - Detroit, IL

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days
Detroit, IL

Average snowfall days - Detroit, IL

The month with the highest number of snowfall days is January (6.3 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
Detroit, IL

Average daylight / Average sunshine - Detroit, IL

The month with the longest days is June (Average daylight: 14h and 56min).
The month with the shortest days is December (Average daylight: 9h and 25min).

The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).

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Average sunshine days
Detroit, IL

Average sunshine days - Detroit, IL

The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is June (12.3 days).

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Average UV index
Detroit, IL

Average UV index - Detroit, 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, February, November and December (UV index 2).

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Average visibility
Detroit, IL

Average visibility - Detroit, 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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