May weather forecast
Elmhurst, IL

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Weather in May

In Elmhurst, Illinois, May sees a substantial rise in temperatures. The sun shines longer, and the town begins to experience warmer days breaking into the territory of a pleasant 67.3°F (19.6°C). Fewer layers of clothing are needed as the weather starts to feel more comfortable. Showers are still frequent, nurturing the blossoming flora of the town. The mood of the town lifts with lighter skies and warmer days ahead.

Temperature

The start of May in Elmhurst, Illinois, is characterized by an increase in the average high-temperature, transitioning from a cool 55.2°F (12.9°C) in April to a comfortable 67.3°F (19.6°C). Throughout the month of May, Elmhurst witnesses an average temperature of 51.6°F (10.9°C).

Humidity

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

Rainfall

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.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.1 snowfall days, in May, Elmhurst aggregates 0.04" (1mm) of snow. In Elmhurst, during the entire year, snow falls for 45.8 days and aggregates up to 14.25" (362mm) of snow.

Daylight

In May, the average length of the day in Elmhurst is 14h and 34min.
On the first day of the month, sunrise is at 5:46 am and sunset at 7:50 pm. On the last day of May, in Elmhurst, sunrise is at 5:19 am and sunset at 8:20 pm CDT.

Sunshine

The average sunshine in May in Elmhurst is 8.6h.

UV index

In May, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In May, a daily UV index of 5 turns into the following recommendations:
Make use of precautions - It is urged to ward off sun damage. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the temperature in May in Elmhurst?

May temperatures in Elmhurst, Illinois, vary between a high-temperature of 67.3°F (19.6°C) and a low-temperature of 51.6°F (10.9°C).

What is the average humidity in May in Elmhurst?

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

What is the rainiest month in Elmhurst?

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

How many days does it rain in May in Elmhurst?

In Elmhurst, during May, the rain falls for 17.3 days and regularly aggregates up to 3.11" (79mm) of 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?

The average day length in May in Elmhurst is 14h and 34min.

When is the sunrise / sunset in May in Elmhurst?

On the first day of May, sunrise is at 5:46 am and sunset at 7:50 pm. On the last day of the month, sunrise is at 5:19 am and sunset at 8:20 pm CDT.

How many hours of sunshine does Elmhurst have in May?

The average sunshine duration in May is 8.6h.

What is the UV index intensity in May in Elmhurst?

In May, the average daily maximum UV index in Elmhurst is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from exposure to Sun's UV rays.
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
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).

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).

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).

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%).

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").

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).

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").

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).

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 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 4min

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).

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).

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).

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).

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).

Elmhurst, Illinois, USA

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