Climate and monthly weather forecast
Detroit, IL

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Weather in January

January, like December, in Detroit, Illinois, is an icy winter month, with an average temperature ranging between min 21.6°F (-5.8°C) and max 33.8°F (1°C). Detroit's January weather reaches an average high of 33.8°F (1°C) and an average low of 21.6°F (-5.8°C), making it the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is also an icy month in Detroit, Illinois, with an average temperature varying between 25°F (-3.9°C) and 38.8°F (3.8°C). February brings an average high-temperature of a still icy 38.8°F (3.8°C), showing a slight difference from January's 33.8°F (1°C). Weather in February »

Weather in March

The first month of the spring, March, is a cool month in Detroit, Illinois, with temperature in the range of an average low of 36°F (2.2°C) and an average high of 51.4°F (10.8°C). Detroit, Illinois, experiences a temperature shift with the start of March, with average high-temperatures moving from an icy 38.8°F (3.8°C) in February to a cool 51.4°F (10.8°C). Weather in March »

Weather in April

April is an enjoyable spring month in Detroit, Illinois, with an average temperature ranging between min 46°F (7.8°C) and max 63.5°F (17.5°C). With the onset of April, Detroit experiences a temperature shift, with the average high-temperature moving from a cool 51.4°F (10.8°C) in March to a refreshing 63.5°F (17.5°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Detroit, Illinois, with an average temperature ranging between min 55.8°F (13.2°C) and max 72.3°F (22.4°C). With the onset of May, the average high-temperature subtly transitions from a comfortable 63.5°F (17.5°C) in April to an agreeable 72.3°F (22.4°C). Weather in May »

Weather in June

The first month of the summer, June, is a moderately hot month in Detroit, Illinois, with an average temperature varying between 64.6°F (18.1°C) and 82°F (27.8°C). As Detroit transitions into June, a rise in the average high-temperature is observed, moving from a pleasant 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 another warm summer month, with an average temperature varying between 66.7°F (19.3°C) and 84.4°F (29.1°C). July, with its average high-temperature of 84.4°F (29.1°C) and an average low-temperature of 66.7°F (19.3°C), holds the record as the warmest month. The heat index value for July is computed to be a sweltering 95°F (35°C). Weather in July »

Weather in August

August, the last month of the summer in Detroit, is also a moderately hot month, with an average temperature ranging between min 65.5°F (18.6°C) and max 83.5°F (28.6°C). August's beginning signals an average high-temperature of a still moderately hot 83.5°F (28.6°C), barely different from July's 84.4°F (29.1°C). Weather in August »

Weather in September

September, the first month of the autumn in Detroit, is still a warm month, with temperature in the range of an average high of 78.3°F (25.7°C) and an average low of 58.6°F (14.8°C). Detroit's September average high-temperature settles at a still moderately hot 78.3°F (25.7°C), showing a near match with the preceding month. Weather in September »

Weather in October

October, the same as September, is another comfortable autumn month in Detroit, Illinois, with an average temperature fluctuating between 64.2°F (17.9°C) and 47.3°F (8.5°C). Detroit, Illinois, in October undergoes a mild reduction in the average high-temperature, shifting from September's moderately hot 78.3°F (25.7°C) to a refreshing 64.2°F (17.9°C). Weather in October »

Weather in November

November, the last month of the autumn in Detroit, is also a fresh month, with an average temperature fluctuating between 50.9°F (10.5°C) and 36.3°F (2.4°C). Transition into November marks a drop in the average high-temperature, moving from an enjoyable 64.2°F (17.9°C) in October to a cool 50.9°F (10.5°C). Weather in November »

Weather in December

December, the first month of the winter in Detroit, is also an icy month, with temperature in the range of an average low of 27.9°F (-2.3°C) and an average high of 39°F (3.9°C). In December, the average high-temperature decreases from a fresh 50.9°F (10.5°C) in November to an icy 39°F (3.9°C). Weather in December »
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Frequently asked questions

What is the coldest time of year in Detroit?

The coldest time of the year is January, with temperatures averaging a high of 33.8°F (1°C) and a low of 21.6°F (-5.8°C).

How many days does it rain in Detroit?

Throughout the year, in Detroit, Illinois, 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 in Detroit, Illinois.

What is the snowiest month in Detroit?

The month with the most snowfall in Detroit is January, when snow falls for 6.3 days and typically aggregates up to 2.05" (52mm) of snow.

How many days does it snow in Detroit?

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

What is the month with the least sunshine in Detroit?

January has the least sunshine of the year in Detroit, Illinois, with an average of 4.4h of sunshine.

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

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

What is the driest month in Detroit?

February is the month with the least rainfall in Detroit. Rain falls for 5.8 days and accumulates 0.75" (19mm) of precipitation.

When is Daylight Saving Time (DST) in Detroit?

On Sunday, March 10. 2024, 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 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.

What is the rainiest month in Detroit?

May is the month with the most rainfall. Rain falls for 16.8 days and accumulates 2.44" (62mm) of precipitation.

When it does not snow in Detroit?

In Detroit, Illinois, snow does not fall in May through October.

What are the most humid months in Detroit?

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

When are the longest days in Detroit?

The month with the longest days is June, with an average of 14h and 54min of daylight.

What are the months with the most sunshine in Detroit?

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

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

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

What is the warmest month in Detroit?

The month of July sees the average highest temperatures, reaching 84.4°F (29.1°C) at the peak and 66.7°F (19.3°C) at the low.

What is the least humid month in Detroit?

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

What is the month with the shortest days in Detroit?

December has the shortest days of the year in Detroit, Illinois, with an average of 9h and 24min 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 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

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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Detroit, Illinois, USA

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