May weather forecast
Mundelein, IL

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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).

Temperature

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). Mundelein experiences an average nighttime temperature of 50°F (10°C) in the month of May.

Humidity

The average relative humidity in May is 77%.

Rainfall

In Mundelein, Illinois, in May, during 17.8 rainfall days, 3.31" (84mm) of precipitation is typically accumulated. In Mundelein, during the entire year, the rain falls for 147.3 days and collects up to 27.44" (697mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows in Mundelein. During 0.2 snowfall days, in May, Mundelein aggregates 0.08" (2mm) of snow. Throughout the year, in Mundelein, there are 48.2 snowfall days, and 18.86" (479mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 37min.
On the first day of the month, sunrise is at 5:46 am and sunset at 7:51 pm. On the last day of May, in Mundelein, sunrise is at 5:18 am and sunset at 8:21 pm CDT.

Sunshine

The average sunshine in May is 8.5h.

UV index

In May, the average daily maximum UV index in Mundelein is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV radiation for the average person.
Note: In May, the maximum UV index of 5 translates into these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
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Frequently asked questions

What is the average May temperature in Mundelein?

The high-temperature during May is 65.8°F (18.8°C) and the low-temperature is 50°F (10°C).

What is the average humidity in May in Mundelein?

The average relative humidity in May is 77%.

How many days does it rain in May in Mundelein?

In Mundelein, during May, the rain falls for 17.8 days and regularly aggregates up to 3.31" (84mm) of precipitation.

What is the last month it snows in Mundelein?

May is the last month it regularly snows in Mundelein. During 0.2 snowfall days, in May, Mundelein aggregates 0.08" (2mm) of snow.

What is the average length of the day in May in Mundelein?

In Mundelein, Illinois, the average day length in May is 14h and 37min.

What time are sunrise and sunset in May in Mundelein?

In May, on the first day of the month, sunrise is at 5:46 am and sunset at 7:51 pm. On the last day of the month, in Mundelein, sunrise is at 5:18 am and sunset at 8:21 pm CDT.

How long on average sun shines in May in Mundelein?

In May, the average sunshine duration is 8.5h.

What is the UV index intensity in May in Mundelein?

In May, the average daily maximum UV index in Mundelein is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from exposure to the Sun's UV radiation.
Average low temperature
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Mundelein, IL

Average temperature in May - Mundelein, IL
  • Average high temperature in May: 65.8°F

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).

  • Average low temperature in May: 50°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 in May
Mundelein, IL

Average pressure in May - Mundelein, IL
  • Average pressure in May: 29.96"Hg

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 in May
Mundelein, IL

Average wind speed in May - Mundelein, IL
  • Average wind speed in May: 8.3mph

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 in May
Mundelein, IL

Average humidity in May - Mundelein, IL
  • Average humidity in May: 77%

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 in May
Mundelein, IL

Average rainfall in May - Mundelein, IL
  • Average rainfall in May: 3.31"

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 in May
Mundelein, IL

Average rainfall days in May - Mundelein, IL
  • Average rainfall days in May: 17.8 days

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 in May
Mundelein, IL

Average snowfall in May - Mundelein, IL
  • Average snowfall in May: 0.08"

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 in May
Mundelein, IL

Average snowfall days in May - Mundelein, IL
  • Average snowfall days in May: 0.2 days

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 in May /
Average sunshine in May
Mundelein, IL

Average daylight in May / Average sunshine in May - Mundelein, IL
  • Average daylight in May: 14h and 4min

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).

  • Average sunshine in May: 8h and 3min

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 in May
Mundelein, IL

Average sunshine days in May - Mundelein, IL
  • Average sunshine days in May: 10.5 days

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 UV index in May
Mundelein, IL

Average UV index in May - Mundelein, IL
  • Average UV index in May: 5

The months with the highest UV index are July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).

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Average cloud cover in May
Mundelein, IL

Average cloud cover in May - Mundelein, IL
  • Average cloud cover in May: 43

The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 30).

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Average visibility in May
Mundelein, IL

Average visibility in May - Mundelein, IL
  • Average visibility in May: 6mi

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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