Climate and monthly weather forecast
Macomb, IL

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Weather in January

January, like December, is another subzero cold winter month in Macomb, Illinois, with an average temperature varying between 19°F (-7.2°C) and 30.9°F (-0.6°C). Macomb records the coldest temperatures in January, averaging a high of 30.9°F (-0.6°C) and a low of 19°F (-7.2°C). Weather in January »

Weather in February

February, the last month of the winter in Macomb, is a cold month, with an average temperature ranging between max 36°F (2.2°C) and min 22.5°F (-5.3°C). Macomb, Illinois, transitions into February recording an average high-temperature of a cold 36°F (2.2°C), closely aligning with the preceding month's temperature. Weather in February »

Weather in March

The first month of the spring, March, is a chilly month in Macomb, Illinois, with an average temperature varying between 34.3°F (1.3°C) and 49.6°F (9.8°C). March brings a rise in Macomb's average high-temperature, moving from a wintry 36°F (2.2°C) in February to a frosty 49.6°F (9.8°C). Weather in March »

Weather in April

April is a comfortable spring month in Macomb, Illinois, with temperature in the range of an average high of 61.3°F (16.3°C) and an average low of 44.2°F (6.8°C). As Macomb transitions into April, the average high-temperature is observed to rise from a chilly 49.6°F (9.8°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 Macomb, is a pleasant month, with an average temperature fluctuating between 71.6°F (22°C) and 54.9°F (12.7°C). In May, the meteorological conditions change with the average high-temperature moving from a comfortable 61.3°F (16.3°C) in April to an agreeable 71.6°F (22°C). Weather in May »

Weather in June

June, the first month of the summer in Macomb, is a moderately hot month, with an average temperature ranging between min 63.7°F (17.6°C) and max 80.2°F (26.8°C). June showcases a minor temperature ascent, adjusting from May's pleasant 71.6°F (22°C) to a warm 80.2°F (26.8°C). Weather in June »

Weather in July

July, like June, in Macomb, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 82.4°F (28°C) and 65.8°F (18.8°C). Macomb's warmest month, July, generally records average temperatures ranging from a high of 82.4°F (28°C) to a low of 65.8°F (18.8°C). During July, the heat index is appraised at a hot 91.4°F (33°C). Weather in July »

Weather in August

August, the last month of the summer in Macomb, is another warm month, with an average temperature ranging between max 81.9°F (27.7°C) and min 63.7°F (17.6°C). The advent of August brings an average high-temperature of a still moderately hot 81.9°F (27.7°C), almost identical to the preceding month. Weather in August »

Weather in September

September, the first month of the autumn in Macomb, is also a moderately hot month, with an average temperature varying between 57.6°F (14.2°C) and 76.8°F (24.9°C). The onset of September brings with it an average high-temperature of a still warm 76.8°F (24.9°C), showing a negligible variation from the month before. Weather in September »

Weather in October

October, like September, in Macomb, Illinois, is another refreshing autumn month, with an average temperature varying between 45.9°F (7.7°C) and 63°F (17.2°C). The shift from September to October involves a decrease in the average high-temperature, from a moderately hot 76.8°F (24.9°C) to a refreshing 63°F (17.2°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Macomb, Illinois, with an average temperature varying between 48.9°F (9.4°C) and 34.7°F (1.5°C). A shift in Macomb's weather is observed as October turns into November, with the average high temperature reducing from a comfortable 63°F (17.2°C) to a chilly 48.9°F (9.4°C). Weather in November »

Weather in December

December, the first month of the winter in Macomb, is also an icy month, with temperature in the range of an average low of 25.7°F (-3.5°C) and an average high of 37°F (2.8°C). The decrease of average high-temperatures is mild in December, with a decline from a frosty 48.9°F (9.4°C) in November to a wintry 37°F (2.8°C). Weather in December »
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Frequently asked questions

What is the coldest month in Macomb?

Macomb, Illinois, experiences its average lowest temperatures in January, reaching a peak of 30.9°F (-0.6°C) and a minimum of 19°F (-7.2°C).

What is the driest month in Macomb?

January is the month with the least rainfall. Rain falls for 4.2 days and accumulates 0.67" (17mm) of precipitation.

How much does it rain in Macomb?

In Macomb, during the entire year, the rain falls for 122.7 days and collects up to 17.8" (452mm) of precipitation.

When does it snow in Macomb?

Months with snowfall are January through April, October through December.

When does it snow the most in Macomb?

The month with the most snowfall in Macomb is January, when snow falls for 7.6 days and typically aggregates up to 1.89" (48mm) of snow.

How much does it snow in Macomb?

In Macomb, during the entire year, snow falls for 25.2 days and aggregates up to 5.47" (139mm) of snow.

What is the month with the least sunshine in Macomb?

With an average of 4.1h of sunshine, January has the least sunshine of the year.

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

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

When is Daylight Saving Time (DST) in Macomb?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Macomb, 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 wettest month in Macomb?

The month with the most rainfall is May, when the rain falls for 16.2 days and typically aggregates up to 2.56" (65mm) of precipitation.

When it does not snow in Macomb?

May through September are months without snowfall in Macomb.

When are the longest days in Macomb?

With an average of 15h and 0min of daylight, June has the longest days of the year in Macomb, Illinois.

When is the highest UV index in Macomb?

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

What month is the hottest in Macomb?

Macomb's temperatures peak on average in July, reaching 82.4°F (28°C) at their highest and 65.8°F (18.8°C) at their lowest.

What is the most humid month in Macomb?

The most humid month is July, with an average relative humidity of 83%.

What month has the most sunshine in Macomb?

July has the most sunshine of the year in Macomb, with an average of 10.1h of sunshine.

What is the least humid month in Macomb?

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

What is the month with the shortest days in Macomb?

December has the shortest days of the year in Macomb, Illinois, with an average of 9h and 18min of daylight.

Average pressure
Macomb, IL

Average pressure - Macomb, IL

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

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Average wind speed
Macomb, IL

Average wind speed - Macomb, IL

The windiest month (with the highest average wind speed) is January (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).

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Average rainfall
Macomb, IL

Average rainfall - Macomb, IL

The wettest month (with the highest rainfall) is May (2.56").
The driest month (with the least rainfall) is January (0.67").

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Average rainfall days
Macomb, IL

Average rainfall days - Macomb, IL

The month with the highest number of rainy days is May (16.2 days).
The month with the least rainy days is January (4.2 days).

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Average snowfall
Macomb, IL

Average snowfall - Macomb, IL

The month with the highest snowfall is January (1.89").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days
Macomb, IL

Average snowfall days - Macomb, IL

The month with the highest number of snowfall days is January (7.6 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
Macomb, IL

Average daylight / Average sunshine - Macomb, IL

The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

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Average sunshine days
Macomb, IL

Average sunshine days - Macomb, IL

The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is June (12.2 days).

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Average UV index
Macomb, IL

Average UV index - Macomb, 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
Macomb, IL

Average visibility - Macomb, IL

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

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Macomb, Illinois, USA

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