Climate and monthly weather forecast
Mundelein, IL

Weather in January

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

Weather in February

The last month of the winter, February, is also a subzero cold month in Mundelein, Illinois, with an average temperature ranging between max 31.3°F (-0.4°C) and min 19.2°F (-7.1°C). In Mundelein, the average high-temperature in February is practically the same as in January - a still freezing cold 31.3°F (-0.4°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Mundelein, Illinois, with an average temperature varying between 43.2°F (6.2°C) and 30.4°F (-0.9°C). In Mundelein, the average high-temperature in March increases from a subzero cold 31.3°F (-0.4°C) in February to a chilly 43.2°F (6.2°C). Weather in March »

Weather in April

April is a cool spring month in Mundelein, Illinois, with temperature in the range of an average high of 54.1°F (12.3°C) and an average low of 39°F (3.9°C). In April, the average high-temperature increases from a frosty 43.2°F (6.2°C) in March to a cool 54.1°F (12.3°C). Weather in April »

Weather in May

May, the last month of the spring in Mundelein, is a comfortable month, with temperature in the range of an average low of 50°F (10°C) and an average high of 65.8°F (18.8°C). In Mundelein, the average high-temperature in May rises from a cool 54.1°F (12.3°C) in April to an enjoyable 65.8°F (18.8°C). Weather in May »

Weather in June

June, the first month of the summer in Mundelein, is a warm month, with temperature in the range of an average low of 59°F (15°C) and an average high of 75.6°F (24.2°C). In Mundelein, the average high-temperature in June increases from a comfortable 65.8°F (18.8°C) in May to a moderately hot 75.6°F (24.2°C). Weather in June »

Weather in July

July, like June, in Mundelein, Illinois, is a moderately hot summer month, with an average temperature varying between 80.4°F (26.9°C) and 64.9°F (18.3°C). The warmest month is July, with an average high-temperature of 80.4°F (26.9°C) and an average low-temperature of 64.9°F (18.3°C). Weather in July »

Weather in August

August, the last month of the summer in Mundelein, is also a moderately hot month, with an average temperature varying between 63.7°F (17.6°C) and 79.3°F (26.3°C). In Mundelein, the average high-temperature in August is essentially the same as in July - a still moderately hot 79.3°F (26.3°C). Weather in August »

Weather in September

September, the first month of the autumn in Mundelein, is still a pleasant month, with an average temperature fluctuating between 57.4°F (14.1°C) and 72.9°F (22.7°C). In September, the average high-temperature slightly 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, the same as September, in Mundelein, Illinois, is a moderate autumn month, with an average temperature fluctuating between 45.5°F (7.5°C) and 59.2°F (15.1°C). In October, the average high-temperature decreases from a pleasant 72.9°F (22.7°C) in September to a mild 59.2°F (15.1°C). Weather in October »

Weather in November

November, the last month of the autumn in Mundelein, is also a frosty month, with temperature in the range of an average low of 33.3°F (0.7°C) and an average high of 45.3°F (7.4°C). In November, the average high-temperature drops from a moderate 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 varying between 33.6°F (0.9°C) and 24.3°F (-4.3°C). In December, the average high-temperature decreases from a frosty 45.3°F (7.4°C) in November to a wintry 33.6°F (0.9°C). Weather in December »
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FAQ

What is the coldest month in Mundelein?

With an average high-temperature of 27.9°F (-2.3°C) and an average low-temperature of 16.5°F (-8.6°C), January is the coldest month.

What are the most humid months in Mundelein?

January and February, with an average relative humidity of 83%, are most humid months.

How many days does it rain in Mundelein?

Throughout the year, in Mundelein, there are 147.3 rainfall days, and 27.44" (697mm) of precipitation is accumulated.

When does it snow in Mundelein?

January through May, October through December are months with snowfall.

How many days does it snow in Mundelein?

In Mundelein, Illinois, during the entire year, snow falls for 48.2 days and aggregates up to 18.86" (479mm) of snow.

What is the month with the least sunshine in Mundelein?

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

What is the snowiest month in Mundelein?

The month with the most snowfall in Mundelein is February, when snow falls for 11 days and typically aggregates up to 5.55" (141mm) of snow.

When is Daylight Saving Time (DST) in Mundelein?

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

June is the month with the most rainfall in Mundelein, Illinois. 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 in Mundelein.

When are the longest days in Mundelein?

June has the longest days of the year, with an average of 15h and 13min of daylight.

What is the warmest month in Mundelein?

The warmest month in Mundelein is July, with an average high-temperature of 80.4°F (26.9°C) and an average low-temperature of 64.9°F (18.3°C).

What is the month with the most sunshine in Mundelein?

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

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

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

What is the least humid month in Mundelein?

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

What is the driest month in Mundelein?

The months with the least rainfall are November and December Rain falls for 7.8 days and accumulates 1.3" (33mm) of rain.

What is the month with the shortest days in Mundelein?

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

When is the lowest UV index in Mundelein?

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

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 13min).
The month with the shortest days is December (Average daylight: 9h and 9min).

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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