Climate and monthly weather forecast
Mundelein, IL

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Weather in January

January, like December, is another subzero cold winter month in Mundelein, Illinois, with an average temperature varying between 16.5°F (-8.6°C) and 27.9°F (-2.3°C). Mundelein's January weather reaches an average high of 27.9°F (-2.3°C) and an average low of 16.5°F (-8.6°C), making it the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Mundelein, Illinois, with an average temperature fluctuating between 19.2°F (-7.1°C) and 31.3°F (-0.4°C). Mundelein notes an average high-temperature of a still freezing cold 31.3°F (-0.4°C) in February, hardly diverging from January. Weather in February »

Weather in March

March, the first month of the spring in Mundelein, is a frosty month, with an average temperature fluctuating between 43.2°F (6.2°C) and 30.4°F (-0.9°C). Noticing a change, the average high-temperature during March moves from February's freezing cold 31.3°F (-0.4°C) to a frosty 43.2°F (6.2°C). Weather in March »

Weather in April

April in Mundelein, Illinois, is a fresh spring month, with an average temperature fluctuating between 54.1°F (12.3°C) and 39°F (3.9°C). The shift into April brings an increase in the average high-temperature, moving from a chilly 43.2°F (6.2°C) in March to a cool 54.1°F (12.3°C). Weather in April »

Weather in May

The last month of the spring, May, is a comfortable month in Mundelein, Illinois, with an average temperature ranging between min 50°F (10°C) and max 65.8°F (18.8°C). With the onset of May, Mundelein's average high-temperature sees a rise, moving from April's fresh 54.1°F (12.3°C) to a refreshing 65.8°F (18.8°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Mundelein, Illinois, with an average temperature ranging between max 75.6°F (24.2°C) and min 59°F (15°C). As May transitions into June, Mundelein sees a rise in the average high-temperature, moving from a comfortable 65.8°F (18.8°C) to a moderately hot 75.6°F (24.2°C). Weather in June »

Weather in July

July, like June, in Mundelein, Illinois, is another warm summer month, with an average temperature fluctuating between 64.9°F (18.3°C) and 80.4°F (26.9°C). Mundelein's temperatures tend to reach their peak averages in July, with a high of 80.4°F (26.9°C) and a low of 64.9°F (18.3°C). Weather in July »

Weather in August

The last month of the summer, August, is also a moderately hot month in Mundelein, Illinois, with an average temperature fluctuating between 79.3°F (26.3°C) and 63.7°F (17.6°C). An average high-temperature of a still moderately hot 79.3°F (26.3°C) marks August, exhibiting a close resemblance to the conditions in July. Weather in August »

Weather in September

The first month of the autumn, September, is still a pleasant month in Mundelein, Illinois, with an average temperature fluctuating between 72.9°F (22.7°C) and 57.4°F (14.1°C). In September, the average high-temperature marginally decreases from a warm 79.3°F (26.3°C) in August to a pleasant 72.9°F (22.7°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Mundelein, Illinois, with temperature in the range of an average low of 45.5°F (7.5°C) and an average high of 59.2°F (15.1°C). As September transitions into October, Mundelein sees a drop in the average high-temperature, transitioning from a pleasant 72.9°F (22.7°C) to a mild 59.2°F (15.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is also a frosty month in Mundelein, Illinois, with an average temperature fluctuating between 33.3°F (0.7°C) and 45.3°F (7.4°C). Mundelein's transition into November involves a shift in temperature, receding from a refreshing 59.2°F (15.1°C) in October to a chilly 45.3°F (7.4°C). Weather in November »

Weather in December

The first month of the winter, December, is also a wintry month in Mundelein, Illinois, with an average temperature ranging between max 33.6°F (0.9°C) and min 24.3°F (-4.3°C). Start of December brings a shift in the average high-temperature, falling from November's chilly 45.3°F (7.4°C) to a wintry 33.6°F (0.9°C). Weather in December »
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Frequently asked questions

What month is the coldest in Mundelein?

Mundelein, Illinois, witnesses the coldest weather in January, with temperatures averaging a high of 27.9°F (-2.3°C) and a low of 16.5°F (-8.6°C).

What are the most humid months in Mundelein?

The months with the highest humidity in Mundelein are January and February, with an average relative humidity of 83%.

How much does it rain in Mundelein?

In Mundelein, during the entire year, the rain falls for 147.3 days and collects up to 27.44" (697mm) of precipitation.

When does it snow in Mundelein?

Months with snowfall in Mundelein are January through May, October through December.

How much does it snow in Mundelein?

Throughout the year, in Mundelein, there are 48.2 snowfall days, and 18.86" (479mm) of snow is accumulated.

What is the month with the least sunshine in Mundelein?

January has the least sunshine of the year in Mundelein, Illinois, with an average of 3.7h of sunshine.

When does it snow the most in Mundelein?

February is the month with the most snowfall. Snow falls for 11 days and accumulates 5.55" (141mm) of snow.

When is Daylight Saving Time (DST) in Mundelein?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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 Mundelein?

June is the month with the most rainfall. Rain falls for 17.2 days and accumulates 3.54" (90mm) of precipitation.

When it does not snow in Mundelein?

June through September are months without snowfall.

When are the longest days in Mundelein?

The month with the longest days is June, with an average of 15h and 12min of daylight.

What is the warmest month in Mundelein?

Mundelein experiences its highest temperatures in July, with an average peak of 80.4°F (26.9°C) and a low of 64.9°F (18.3°C).

What are the months with the most sunshine in Mundelein?

July and August, with an average of 10.1h of sunshine, are months with the most sunshine in Mundelein.

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

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

What is the least humid month in Mundelein?

October is the least humid month in Mundelein, with an average relative humidity of 74%.

What is the driest month in Mundelein?

November and December are months with the least rain in Mundelein when the rain falls for 7.8 days and typically aggregates up to 1.3" (33mm) of rain.

What is the month with the shortest days in Mundelein?

With an average of 9h and 12min of daylight, December has the shortest days of the year in Mundelein.

What is the month with the lowest UV index in Mundelein?

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

Average temperature
Mundelein, IL

Average temperature - Mundelein, IL

The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (27.9°F).

The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).

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Average pressure
Mundelein, IL

Average pressure - Mundelein, IL

The month with the highest atmospheric pressure is January (30.1"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed
Mundelein, IL

Average wind speed - Mundelein, IL

The windiest month (with the highest average wind speed) is January (10.3mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).

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Average humidity
Mundelein, IL

Average humidity - Mundelein, IL

The months with the highest relative humidity are January and February (83%).
The month with the lowest relative humidity is October (74%).

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Average rainfall
Mundelein, IL

Average rainfall - Mundelein, IL

The wettest month (with the highest rainfall) is June (3.54").
The driest months (with the least rainfall) are November and December (1.3").

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Average rainfall days
Mundelein, IL

Average rainfall days - Mundelein, IL

The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is February (4.3 days).

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Average snowfall
Mundelein, IL

Average snowfall - Mundelein, IL

The month with the highest snowfall is February (5.55").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Mundelein, IL

Average snowfall days - Mundelein, IL

The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight / Average sunshine
Mundelein, IL

Average daylight / Average sunshine - Mundelein, 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 months with the most sunshine are July and August (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).

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Average sunshine days
Mundelein, IL

Average sunshine days - Mundelein, IL

The month with the most sunshine days is November (16.6 days).
The month with the least sunshine days is June (10 days).

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Average visibility
Mundelein, IL

Average visibility - Mundelein, IL

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

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Mundelein, Illinois, USA

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