May weather forecast
Elmhurst, IL

Weather in May

The last month of the spring, May, is an enjoyable month in Elmhurst, Illinois, with an average temperature varying between 67.3°F (19.6°C) and 51.6°F (10.9°C).

Temperature

In Elmhurst, Illinois, the average high-temperature in May increases from a fresh 55.2°F (12.9°C) in April to a comfortable 67.3°F (19.6°C). The average low-temperature, in Elmhurst, is 51.6°F (10.9°C).

Humidity

In Elmhurst, the average relative humidity in May is 75%.

Rainfall

May is the month with the most rainfall in Elmhurst. Rain falls for 17.3 days and accumulates 3.11" (79mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows in Elmhurst. During 0.1 snowfall days, Elmhurst aggregates 0.04" (1mm) of snow. Throughout the year, in Elmhurst, there are 45.8 snowfall days, and 14.25" (362mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 34min.
On the first day of May in Elmhurst, sunrise is at 5:47 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 8:19 pm CDT.

Sunshine

The average sunshine in May is 8.6h.

UV index

In Elmhurst, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV rays for ordinary individuals.
Note: In May, the average maximum UV index of 5 translate into the following recommendations:
Take precautions - Protection against sun damage is advised. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the average humidity in May in Elmhurst?

In Elmhurst, Illinois, the average relative humidity in May is 75%.

What is the wettest month in Elmhurst?

The month with the most rainfall is May, when the rain falls for 17.3 days and typically aggregates up to 3.11" (79mm) of precipitation.

How many days does it rain in May in Elmhurst?

In Elmhurst, Illinois, in May, it is raining for 17.3 days, with typically 3.11" (79mm) of accumulated precipitation.

What is the last month it snows in Elmhurst?

May is the last month it regularly snows in Elmhurst. During 0.1 snowfall days, in May, Elmhurst aggregates 0.04" (1mm) of snow.

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

In Elmhurst, the average day length in May is 14h and 34min.

When is the sunrise / sunset in May in Elmhurst?

On the first day of May, sunrise is at 5:47 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 8:19 pm CDT.

How long on average sun shines in May in Elmhurst?

The average sunshine duration in May in Elmhurst is 8.6h.

What is the UV index reading in May in Elmhurst?

The average daily maximum UV index in May in Elmhurst is 5. A UV Index estimate of 3 to 5 represents a moderate health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Elmhurst, IL

Average temperature in May - Elmhurst, IL
  • Average high temperature in May: 67.3°F

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (28.8°F).

  • Average low temperature in May: 51.6°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (18°F).

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Average pressure in May
Elmhurst, IL

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

The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in May
Elmhurst, IL

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

The windiest month (with the highest average wind speed) is January (10.2mph).
The calmest month (with the lowest average wind speed) is August (6.3mph).

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Average humidity in May
Elmhurst, IL

Average humidity in May - Elmhurst, IL
  • Average humidity in May: 75%

The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in May
Elmhurst, IL

Average rainfall in May - Elmhurst, IL
  • Average rainfall in May: 3.11"

The wettest month (with the highest rainfall) is May (3.11").
The driest month (with the least rainfall) is December (1.14").

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Average rainfall days in May
Elmhurst, IL

Average rainfall days in May - Elmhurst, IL
  • Average rainfall days in May: 17.3 days

The months with the highest number of rainy days are May and July (17.3 days).
The month with the least rainy days is February (5.1 days).

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Average snowfall in May
Elmhurst, IL

Average snowfall in May - Elmhurst, IL
  • Average snowfall in May: 0.04"

The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in May
Elmhurst, IL

Average snowfall days in May - Elmhurst, IL
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (12.4 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
Elmhurst, IL

Average daylight in May / Average sunshine in May - Elmhurst, IL
  • Average daylight in May: 14h and 34min

The month with the longest days is June (Average daylight: 15h and 11min).
The month with the shortest days is December (Average daylight: 9h and 11min).

  • Average sunshine in May: 8h and 36min

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
Elmhurst, IL

Average sunshine days in May - Elmhurst, IL
  • Average sunshine days in May: 10.8 days

The month with the most sunshine days is November (16.8 days).
The month with the least sunshine days is July (9.5 days).

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Average UV index in May
Elmhurst, IL

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

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).

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Average cloud cover in May
Elmhurst, IL

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

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

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Average visibility in May
Elmhurst, IL

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

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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